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1 zarlink semiconductor inc. zarlink, zl and the zarlink semiconductor logo are trademarks of zarlink semiconductor inc. copyright 2005-2008, zarlink semiconductor inc. all rights reserved. a full design manual is available to qualified customers. to register, please send an email to timingandsync@zarlink.com. features ? supports the requirements of telcordia gr-253 and gr-1244 for stratum 3, 4e, 4 and smc clocks, and the requirements of itu-t g.781 sets, g.813 sec, g.823, g.824 and g.825 clocks ? internal apll provides standard output clock frequencies up to 622.08 mhz that meet jitter requirements for interfaces up to oc-192/stm-64 ? programmable output synthesizers generate clock frequencies from any multiple of 8 khz up to 77.76 mhz in addition to 2 khz ? provides two dplls which are independently configurable through a serial software interface ? dpll1 provides all the features necessary for generating sonet/sdh compliant clocks including automatic hitless reference switching, automatic mode selection (locked, free-run, holdover), selectable loop bandwidth and pull-in range ? dpll2 provides a comprehensive set of features necessary for generating derived output clocks and other general purpose clocks ? provides 8 reference inputs which support clock frequencies with any multiples of 8 khz up to 77.76 mhz in addition to 2 khz ? supports master/slave configuration for advancedtca tm ? configurable input to output delay and output to output phase alignment ? optional external feedback path provides dynamic input to output delay compensation ? provides 3 sync inputs for output frame pulse alignment ? generates several styles of output frame pulses with selectable pulse width, polarity and frequency ? flexible input reference monitoring automatically disqualifies references based on frequency and phase irregularities ? supports ieee 1149.1 jtag boundary scan june 2008 figure 1 - block diagram dpll1_mod_sel1:0 tck tdo tdi tms trst_b dpll1_holdover dpll1_lock dpll2 sck so si dpll1 slave_en dpll2_ref rst_b dpll1_hs_en cs_b diff0_en diff1_en reference monitors ref sync ref ref0 ref1 ref2 ref3 ref4 ref5 ref6 ref7 sync0 sync1 sync2 int_b sdh_clk0 sdh_clk1 sdh_fp0 sdh_fp1 p0_clk0 p0_clk1 p0_fp0 p0_fp1 p1_clk0 p1_clk1 fb_clk ref7:0 sync2:0 ref_&_sync_status controller & state machine spi interface sonet/sdh apll p0 synthesizer p1 synthesizer feedback synthesizer diff0_p/n diff1_p/n ieee 1449.1 jtag master clock fb_clk ext_fb_fp ext_fb_clk osco osci fb_fp sdh_filter filter_ref0 filter_ref1 zl30116 sonet/sdh oc-48/oc-192 system synchronizer data sheet ordering information ZL30116GGGV2 100 pin cabga trays zl30116ggg2v2100 pin cabga* trays *pb free tin/silver/copper -40 o c to +85 o c
zl30116 data sheet 2 zarlink semiconductor inc. applications ? advancedtca tm systems ? multi-service edge switches or routers ? multi-service provisioning platforms (mspps) ? add-drop multiplexers (adms) ? wireless/wireline gateways ? wireless base stations ? dslam / next gen dlc ? core routers
zl30116 data sheet table of contents 3 zarlink semiconductor inc. 1.0 functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1.1 dpll features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 1.2 dpll mode control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 1.3 ref and sync inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 1.4 ref and sync monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 1.5 output clocks and frame pulses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 1.6 configurable input-t o-output and output-to-out put delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 1.7 master/slave configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 1.8 external feedback inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2.0 software configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 3.0 references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
zl30116 data sheet list of figures 4 zarlink semiconductor inc. figure 1 - block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 figure 2 - automatic mode state machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 figure 3 - reference and sync inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 figure 4 - output frame pulse alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 figure 5 - behaviour of the guard soak ti mer during cfm or scm failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 figure 6 - output clock configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 figure 7 - phase delay adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 figure 8 - typical master/slave configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 figure 9 - external feedback configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
zl30116 data sheet list of tables 5 zarlink semiconductor inc. table 1 - dpll1 and dpll2 features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 table 2 - set of pre-defined auto-detect clock frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 table 3 - set of pre-defined auto-detect sync frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 table 4 - output clock and frame pulse frequencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 table 5 - register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
zl30116 data sheet 6 zarlink semiconductor inc. changes summary the following table captures the changes from the june 2006 issue. the following table captures the changes from the january 2006 issue. the following table captures the changes from the december 2005 issue. page item change 2 ordering information box updated new ordering part numbers. 22 table 5 - register map correct chip id_reg number. page item change 25-27 software register description changed the naming and description of the frame pulse delay offset register s to clearly show that they form a 22-bit register spread out over 3 8-bit registers. the 22-bit regist er must be considered a multi-byte register during a read or write operation. this affects registers 0x40-0x42, 0x45-0x47, and 0x58-0x5a. page item change 12 1.1, ?dpll features? added 14 hz and 28 hz to available loop bandwidths for dpll1 14 table 2 removed the custom frequencies from the auto- detect table. custom frequencies are configurable for each reference.
zl30116 data sheet 7 zarlink semiconductor inc. pin description pin # name i/o type description input reference c1 b2 a3 c3 b3 b4 c4 a4 ref0 ref1 ref2 ref3 ref4 ref5 ref6 ref7 i d input references (lvcmos, schmitt trigger). these are input references available to both dpll1 and dpll2 fo r synchronizing output clocks. all eight input references can be automatically or manually selected using software registers. these pins are internally pulled down to vss. b1 a1 a2 sync0 sync1 sync2 i d frame pulse synchronization references (lvcmos, schmitt trigger). these are the frame pulse synchroniz ation inputs associated with input references 0, 1 and 2. these inputs acc ept frame pulses in a clock format (50% duty cycle) or a basic frame pulse form at with minimum pulse width of 5 ns. these pins are internally pulled down to v ss. c5 ext_fb_clk i d external dpll feedback clock (lvcmos, schmitt trigger). external feedback clock input. this allows dpll 1 to adjust for pcb trace propagation delays. this pin is internally pulled down to vss. leave open when not is use. b5 ext_fb_fp i d external dpll feedback frame pulse (lvcmos, schmitt trigger). external feedback frame pulse input. this allows dpll1 to adjust for pcb trace propagation delays. this pin is internal ly pulled down to vss. leave open when not is use. output clocks and frame pulses d10 sdh_clk0 o sonet/sdh output clock 0 (lvcmos). this output can be configured to provide any one of the sonet/sdh cloc k outputs up to 77.76 mhz. the default frequency for this output is 77.76 mhz. g10 sdh_clk1 o sonet/sdh output clock 1 (lvcmos). this output can be configured to provide any one of the sonet/sdh cloc k outputs up to 77.76 mhz. the default frequency for this output is 19.44 mhz. e10 sdh_fp0 o sonet/sdh output frame pulse 0 (lvcmos). this output can be configured to provide virtually any style of ou tput frame pulse synchronized with an associated sonet/sdh family output cloc k. the default frequency for this frame pulse output is 8 khz. f10 sdh_fp1 o sonet/sdh output frame pulse 1 (lvcmos). this output can be configured to provide virtually any style of ou tput frame pulse synchronized with an associated sonet/sdh family output cloc k. the default frequency for this frame pulse output is 2 khz. k9 p0_clk0 o programmable synthesizer 0 - output clock 0 (lvcmos). this output can be configured to provide any frequency with a multiple of 8 khz up to 77.76 mhz in addition to 2 khz. the default frequency for this output is 2.048 mhz. k7 p0_clk1 o programmable synthesizer 0 - output clock 1 (lvcmos). this is a programmable clock output configurable as a multiple or division of the p0_clk0 frequency within the range of 2 khz to 77.76 mhz. the default frequency for this output is 8.192 mhz.
zl30116 data sheet 8 zarlink semiconductor inc. k8 p0_fp0 o programmable synthesizer 0 - ou tput frame pulse 0 (lvcmos). this output can be configured to provide virtually an y style of output fr ame pulse associated with the p0 clocks. the default frequenc y for this frame pulse output is 8 khz. j7 p0_fp1 o programmable synthesizer 0 - ou tput frame pulse 1 (lvcmos). this output can be configured to provide virtually an y style of output fr ame pulse associated with the p0 clocks. the default frequenc y for this frame pulse output is 8 khz j10 p1_clk0 o programmable synthesizer 1 - output clock 0 (lvcmos). this output can be configured to provide any frequency with a multiple of 8 khz up to 77.76 mhz in addition to 2 khz. the default frequency for this output is 1.544 mhz (ds1). k10 p1_clk1 o programmable synthesizer1 - output clock 1 (lvcmos). this is a programmable clock output configurable as a multiple or division of the p1_clk0 frequency within the range of 2 khz to 77.76 mhz. the default frequency for this output is 3.088 mhz (2x ds1). h10 fb_clk o feedback clock (lvcmos). this output is a buffered copy of the feedback clock for dpll1. the frequency of this ou tput always equals the frequency of the selected reference. e1 dpll2_ref o dpll2 selected output reference (lvcmos). this is a buffered copy of the output of the reference selector for dp ll2. switching between input reference clocks at this output is not hitless. a9 b10 diff0_p diff0_n o differential output clock 0 (lvpecl). this output can be configured to provide any one of the available sdh clocks. the default frequency for this clock output is 155.52 mhz a10 b9 diff1_p diff1_n o differential output clock 1 (lvpecl). this output can be configured to provide any one of the available sdh clocks. the default frequency for this clock output is 622.08 mhz clock control h5 rst_b i reset (lvcmos, schmitt trigger). a logic low at this input resets the device. to ensure proper operation, the device must be reset after power-up. reset should be asserted for a minimum of 300 ns. j5 dpll1_hs_en i u dpll1 hitless switching enable (lvcmos, schmitt trigger). a logic high at this input enables hitless reference sw itching. a logic low disables hitless reference switching and re-aligns dpll1? s output phase to the phase of the selected reference input. this feature can also be controlled through software registers. this pin is in ternally pulled up to vdd. c2 d2 dpll1_mod_sel0 dpll1_mod_sel1 i u dpll1 mode select 1:0 (lvcmos, schmitt trigger). during reset, the levels on these pins determine the default mode of operation for dpll1 (automatic, normal, holdover or freerun). after reset, the mode of operation can be controlled directly with t hese pins, or by accessing the dpll1_modesel register (0x1f) through the serial interface. th is pin is internally pulled up to vdd. d1 slave_en i u master/slave control (lvcmos, schmitt trigger). this pin selects the mode of operation for the device. if set high, slave mode is selected. if set low, master mode is selected. this feature can also be controlled through so ftware registers. this pin is internally pulled up to vdd. pin # name i/o type description
zl30116 data sheet 9 zarlink semiconductor inc. k1 diff0_en i u differential output 0 enable (lvcmos, schmitt trigger). when set high, the differential lvpecl output 0 driver is enabled. when set low, the differential driver is tristated reducing power consumptio n. this pin is internally pulled up to vdd. d3 diff1_en i u differential output 1 enable (lvcmos, schmitt trigger). when set high, the differential lvpecl output 1 driver is enabled. when set low, the differential driver is tristated reducing power consumptio n.this pin is internally pulled up to vdd. status h1 dpll1_lock o lock indicator (lvcmos). this is the lock indicator pin for dpll1. this output goes high when dpll1?s output is frequency and phase locked to the input reference. j1 dpll1_holdover o holdover indicator (lvcmos). this pin goes high when dpll1 enters the holdover mode. serial interface e2 sck i clock for serial interface (lvcmos). serial interface clock. f1 si i serial interface input (lvcmos). serial interface data input pin. g1 so o serial interface output (lvcmos). serial interface data output pin. e3 cs_b i u chip select for serial interface (lvcmos). serial interface chip select. this pin is internally pulled up to vdd. g2 int_b o interrupt pin (lvcmos). indicates a change of devi ce status prompting the processor to read the enabled interrupt se rvice registers (isr). this pin is an open drain, active low and requires an external pulled up to vdd. apll loop filter a6 sdh_filter a external analog pll loop filter terminal. b6 filter_ref0 a analog pll external loop filter reference. c6 filter_ref1 a analog pll external loop filter reference. jtag and test j4 tdo o test serial data out (output). jtag serial data is output on this pin on the falling edge of tck. this pin is held in high impedance state when jtag scan is not enabled. k2 tdi i u test serial data in (input). jtag serial test instructions and data are shifted in on this pin. this pin is internally pulled up to vdd. if this pin is not used then it should be left unconnected. h4 trst_b i u test reset (lvcmos). asynchronously initializes the jtag tap controller by putting it in the test-logi c-reset state. this pin should be pulsed low on power- up to ensure that the device is in the normal functional state. this pin is internally pulled up to vdd. if this pin is not used then it should be connected to gnd. k3 tck i test clock (lvcmos): provides the clock to the jtag te st logic. if this pin is not used then it should be pulled down to gnd. pin # name i/o type description
zl30116 data sheet 10 zarlink semiconductor inc. j3 tms i u test mode select (lvcmos). jtag signal that controls the state transitions of the tap controller. this pin is internally pulled up to v dd . if this pin is not used then it should be left unconnected. master clock k4 osci i oscillator master clock input (lvcmos). this input accepts a 20 mhz reference from a clock oscillator (tcxo, ocxo). the stability and accuracy of the clock at this input determines t he free-run accuracy and the long term holdover stability of the output clocks. k5 osco o oscillator master clock output (lvcmos). this pin must be left unconnected when the osci pin is connected to a clock oscillator. miscellaneous j2 h7 j6 g3 ic internal connection. connect to ground. k6 ic internal connection. leave unconnected. f2 f3 nc no connection. leave unconnected. power and ground d9 e4 g8 g9 j8 j9 h6 h8 v dd p p p p p p p p positive supply voltage. +3.3v dc nominal. e8 f4 v core p p positive supply voltage. +1.8v dc nominal. a5 a8 c10 av dd p p p positive analog supply voltage. +3.3v dc nominal. b7 b8 h2 av core p p p positive analog supply voltage. +1.8v dc nominal. pin # name i/o type description
zl30116 data sheet 11 zarlink semiconductor inc. i - input i d - input, internally pulled down i u - input, internally pulled up o - output a - analog p - power g - ground d4 d5 d6 d7 e5 e6 e7 f5 f6 f7 g4 g5 g6 g7 e9 f8 f9 h9 v ss g g g g g g g g g g g g g g g g g g ground. 0 volts. a7 c7 c8 c9 d8 h3 av ss g g g g g g analog ground. 0 volts. pin # name i/o type description
zl30116 data sheet 12 zarlink semiconductor inc. 1.0 functional description the zl30116 sonet/sdh system synchronizer is a high ly integrated device that provides the functionality required for synchronizing network equipment. it incorp orates two independent dplls, each capable of locking to one of eight input references and provides a wide vari ety of synchronized output clocks and frame pulses. 1.1 dpll features the zl30116 provides two independently controlled digital phase-locked loo ps (dpll1, dpll2) for clock and/or frame pulse synchronization. table 1 shows a feature summary for both dplls. feature dpll1 dpll2 modes of operation free-run, normal (locked) , holdover free-run, normal (locked), holdover loop bandwidth user selectable : 0.1 hz, 1.7 hz, 3.5 hz, fast lock (7 hz), 14 hz, 28 hz 1 , or wideband 2 (890 hz / 56 hz / 14 hz) fixed: 14 hz phase slope limiting user selectable: 885 ns/s, 7.5 s/s, 61 s/s, or unlimited user selectable: 61 s/s, or unlimited pull-in range user selectable: 12 ppm, 52 ppm, 83 ppm, 130 ppm fixed: 130 ppm holdover parameters selectable update times: 26 ms, 1 s, 10 s, 60 s, and selectable holdover post filter bw: 18 mhz, 2.5 hz, 10 hz. fixed update time: 26 ms no holdover post filtering holdover frequency accuracy better than 1 ppb (stratum 3e) initial frequency offset. frequency drift depends on the 20 mhz external oscillator. better than 50 ppb (stratum 3) initial frequency offset. frequency drift depends on the 20 mhz external oscillator. reference inputs ref0 to ref7 ref0 to ref7 sync inputs sync0, sync1, sync2 sync inputs are not supported. input ref frequencies 2 khz, n * 8 khz up to 77.76 mhz 2 khz, n * 8 khz up to 77.76 mhz supported sync input frequencies 166.67 hz, 400 hz, 1 khz, 2 khz, 8khz, 64khz. sync inputs are not supported. input reference selection/switching automatic (based on programmable priority and revertiveness), or manual automatic (based on programmable priority and revertiveness), or manual hitless ref switching can be enabled or disabled can be enabled or disabled output clocks diff0_p/n, diff 1_p/n, sdh_clk0, sdh_clk1, p0_clk0, p0_clk1, p1_clk0, p1_clk1, fb_clk. p0_clk0, p0_clk1, p1_clk0, p1_clk1. output frame pulses sdh_fp0, sdh_fp1, p0_fp0, p0_fp1 synchronized to active sync reference. p0_fp0, p0_fp1 not synchronized to sync reference. supported output clock frequencies as listed in table 4 as listed in table 4 for p0_clk0, p0_clk1, p1_clk0, p1_clk1 table 1 - dpll1 and dpll2 features
zl30116 data sheet 13 zarlink semiconductor inc. 1.2 dpll mode control both dpll1 and dpll2 independently support three modes of operation - free-run, nor mal, and holdover. the mode of operation can be manually set or controlled by an automatic state machine as shown in figure 2. figure 2 - automatic mode state machine free-run the free-run mode occurs immediately after a reset cycl e or when the dpll has never been synchronized to a reference input. in this mode, the frequency accuracy of th e output clocks is equal to the frequency accuracy of the external master oscillator. lock acquisition the input references are continuously monitored for frequen cy accuracy and phase regularity. if at least one of the input references is qualified by the refe rence monitors, then the dpll will begi n lock acquisition on that input. given a stable reference input, the zl30116 will enter in the normal (locked) mode. supported output frame pulse frequencies as listed in table 4 as listed in table 4 for p0_fp0, p0_fp not synchronized to sync reference. external status pin indicators lock, holdover none 1. limited to 14 hz for 2 khz references) 2. in the wideband mode, the loop bandwidth depends on the frequency of the reference input. for reference frequencies greater than 8 khz, the loop bandwidth = 890 hz. for reference frequencies equal to 8 khz, the loop bandwidth = 56 hz. the loop bandwidth is equal to 14 hz for reference frequencies of 2 khz. feature dpll1 dpll2 table 1 - dpll1 and dpll2 features reset another reference is qualified and available for selection phase lock on the selected reference is achieved lock acquisition normal (locked) no references are qualified and available for selection free-run holdover selected reference fails all references are monitored for frequency accuracy and phase regularity, and at least one reference is qualified. normal (locked)
zl30116 data sheet 14 zarlink semiconductor inc. normal (locked) the usual mode of operation for the dpll is the normal mode where the dpll phase locks to a selected qualified reference input and generates output cl ocks and frame pulses with a frequency accuracy equal to the frequency accuracy of the reference input. while in the normal m ode, the dpll?s clock and frame pulse outputs comply with the mtie and tdev wander generation spec ifications as described in telc ordia and itu-t telecommunication standards. holdover when the dpll operating in the normal mode loses its refe rence input, and no other qualified references are available, it will enter the holdover mode and continue to generate output clocks based on historical frequency data collected while the dpll was synchronized. the transit ion between normal and holdover modes is controlled by the dpll so that its initial frequency offset is better than 1 ppb which meets the requirement of stratum 3e. the frequency drift after this transition period is dependant on the frequency drift of the exte rnal master oscillator. 1.3 ref and sync inputs there are eight reference clock inputs ( ref0 to ref7 ) available to both dpll1 and dpll2. the selected reference input is used to synchronize the output clocks. each of the dplls have independent reference selectors which can be controlled using a built-in stat e machine or set in a manual mode. figure 3 - reference and sync inputs each of the ref inputs accept a single-ended lvcmos clock wi th a frequency ranging from 2 khz to 77.76 mhz. built-in frequency detection circuitry aut omatically determines the frequency of the reference if its frequency is within the set of pre-defined frequencies as shown in table 2. custom frequencies definable in multiples of 8 khz are also available. 2 khz 16.384 mhz 8 khz 19.44 mhz 64 khz 38.88 mhz 1.544 mhz 77.76 mhz 2.048 mhz 6.48 mhz 8.192 mhz table 2 - set of pre-defined auto-detect clock frequencies ref7:0 sync2:0 dpll2 dpll1
zl30116 data sheet 15 zarlink semiconductor inc. in addition to the reference inputs, dpll1 has th ree optional frame pulse synchronization inputs ( sync0 to sync2 ) used to align the output frame pulses. the sync n input is selected with its corresponding ref n input, where n = 0, 1, or 2. note that the sync input cannot be used to sync hronize the dpll, it only det ermines the alignment of the frame pulse outputs. an example of output frame pulse alignment is shown in figure 4. figure 4 - output frame pulse alignment each of the sync inputs accept a single-ended lvcmos frame pulse. since alignment is determined from the rising edge of the frame pulse, there is no duty cycle restriction on this input, but there is a minimum pulse width requirement of 5 ns. frequency detection for the sync i nputs is automatic for the s upported frame pulse frequencies shown in table 3. 166.67 hz (48x 125 s frames) 400 hz 1 khz 2 khz 8 khz 64 khz table 3 - set of pre-defined auto-detect sync frequencies ref n diff x /sdh_clk x /p0_clk x /p1_clk x sdh_fp x /p0_fp x without a frame pulse signal at the sync input, the output frame pulses will align to any arbitrary cycle of its associated output clock. sync n - no frame pulse signal present when a frame pulse signal is present at the sync input, the dpll will align the output frame pulses to the output clock edge that is aligned to the input frame pulse. ref n sync n n = 0, 1, 2 x = 0, 1 n = 0, 1, 2 x = 0, 1 diff x /sdh_clk x /p0_clk x /p1_clk x sdh_fp x /p0_fp x
zl30116 data sheet 16 zarlink semiconductor inc. 1.4 ref and sync monitoring all input references ( ref0 to ref7 ) are monitored for frequency accuracy and phase regularity. new references are qualified before they can be selected as a synchronization source and quali fied references are continuously monitored to ensure that they are suitable for synchron ization. the process of qualifying a reference depends on four levels of monitoring. single cycle monitor (scm) the scm block measures the period of each reference cloc k cycle to detect phase irregu larities or a missing clock edge. in general, if the measured period deviates by more than 50% from the nominal period, then an scm failure (scm_fail) is declared. coarse frequency monitor (cfm) the cfm block monitors the reference frequency over a measurement period of 30 s so that it can quickly detect large changes in frequency. a cfm failure (cfm_fail) is triggered when the frequency has changed by more than 3% or approximately 30000 ppm. precise frequency monitor (pfm) the pfm block measures the frequency accuracy of the reference over a 10 second interval. to ensure an accurate frequency measurement, the pfm measurement inte rval is re-initiated if phase or frequency irregularities are detected by the scm or cfm. the pfm provides a level of hysteresis between the acceptance range and the rejection range to prevent a failure i ndication from toggling between valid and invalid for references that are on the edge of the acceptance range. when determining the frequency accuracy of the refe rence input, the pfm uses t he external oscillator?s output frequency (f ocsi ) as its point of reference. guard soak timer (gst) the gst block mimics the operation of an analog integrator by accumulating failure events from the cfm and the scm blocks and applying a selectable rate of decay when no failures are detected. as shown in figure 5, a gst failure (gst_fail) is triggered when the accumulat ed failures have reached the upper threshold during the disqualification observation window. when there are no cfm or scm failures, the accumulator decrements until it reaches its lower th reshold during the qu alification window. figure 5 - behaviour of the guard soak timer during cfm or scm failures ref cfm or scm failures upper threshold lower threshold t d - disqualification time t q - qualification time = n * t d t d t q gst_fail
zl30116 data sheet 17 zarlink semiconductor inc. all sync inputs ( sync0 to sync2 ) are continuously monitored to ensure that there is a correct number of reference clock cycles within t he frame pulse period. 1.5 output clocks and frame pulses the zl30116 offers a wide variety of outputs incl uding two low-jitter differential lvpecl clocks ( diff0_p/n, diff1_p/n ), two sonet/sdh lvcmos ( sdh_clk0, sdh_clk1 ) output clocks, and four programmable lvcmos ( p0_clk0, p0_clk1, p1_clk0, p1_clk1 ) output clocks. in addition to the cl ock outputs, two lvcmos sonet/sdh frame pulse outputs ( sdh_fp0, sdh_fp1 ) and two lvcmos programmable frame pulses ( p0_fp0, p0_fp1 ) are also available. the feedback clock ( fb_clk ) of dpll1 is available as an output cloc k. its output frequency is always equal to dpll1?s selected input frequency. the output clocks and frame pulses derived from the so net/sdh apll are always synchronous with dpll1, and the clocks and frame pulses generated from the programm able synthesizers can be synchronized to either dpll1 or dpll2. this allows the zl30116 to have two independent timing paths. figure 6 - output clock configuration dpll2 p0_clk0 p0_fp0 p0_clk1 p0_fp1 p0 synthesizer dpll1 p1_clk0 p1_clk1 p1 synthesizer sdh_clk0 sdh_fp0 sdh_clk1 sdh_fp1 sonet/sdh apll diff0 diff1 feedback synthesizer fb_clk
zl30116 data sheet 18 zarlink semiconductor inc. the supported frequencies for the output clo cks and frame pulses are shown in table 4. diff0_p/n, diff1_p/n (lvpecl) sdh_clk0, sdh_clk1 (lvcmos) p0_clk0, p1_clk0 (lvcmos) p0_clk1, p1_clk1 (lvcmos) sdh_fp0, shd_fp1, p0_fp0, p0_fp1 (lvcmos) 6.48 mhz 6.48 mhz 2 khz p x _clk0 p x _clk1 = 2 m (up to 77.76 mhz) 1 1. m= -128 to 127 defined as an 8-bit two?s complement value. +ve values divide, -ve values multiply 166.67 hz (48x 125 s frames) 19.44 mhz 9.72 mhz n * 8 khz (up to 77.76 mhz) 2 2. n = 0 to 9270, n = 0 selects 2 kh 400 hz 38.88 mhz 12.96 mhz 1 khz 51.84 mhz 19.44 mhz 2 khz 77.76 mhz 25.92 mhz 4 khz 155.52 mhz 38.88 mhz 8 khz 311.04 mhz 51.84 mhz 32 khz 622.08 mhz 77.76 mhz 64 khz table 4 - output clock and frame pulse frequencies
zl30116 data sheet 19 zarlink semiconductor inc. 1.6 configurable input-to-output and output-to-output delays the zl30116 allows programmable static delay compensa tion for controlling input- to-output and output-to-output delays of its clocks and frame pulses. all of the output synthesizers (sonet/sdh, p0, p1, feedback) locked to dpll1 can be configured to lead or lag the selected input reference clock using the dpll1 fine delay . the delay is programmed in steps of 119.2 ps with a range of -128 to +127 steps giving a total delay adjus tment in the range of -15.26 ns to +15.14 ns. negative values delay the output clock, positi ve values advance the output clock. synt hesizers that are locked to dpll2 are unaffected by this delay adjustment. in addition to the fine delay introduced in the dpll1 path , the sonet/sdh, p0, and p1 synthesizers have the ability to add their own fine delay adjustments using the p0 fine delay , p1 fine delay , and sdh fine delay . these delays are also programmable in steps of 119.2 ps with a range of -128 to +127 steps. in addition to these delays, the si ngle-ended output clocks of the sonet/ sdh, p0, and p1 synthesizers can be independently offset by 90, 180 and 270 degrees using the coarse delay , and the sonet/sdh differential outputs can be independently delayed by -1.6 ns, 0 ns, +1.6 ns or +3.2 ns using the diff delay . the output frame pulses (sonet/sdh, p0) can be independently offset with respect to each other using the fp delay . figure 7 - phase delay adjustments dpll1 dpll2 p0 fine delay p0_clk0 p0_clk1 p0_fp0 p0_fp1 p0 synthesizer coarse delay coarse delay fp delay fp delay fb_clk p1_clk0 p1_clk1 p1 fine delay diff delay diff delay diff0 diff1 sonet/sdh apll sdh_clk0 sdh_clk1 sdh_fp0 sdh_fp1 sdh fine delay feedback synthesizer dpll1 fine delay coarse delay coarse delay fp delay fp delay coarse delay coarse delay p1 synthesizer
zl30116 data sheet 20 zarlink semiconductor inc. 1.7 master/sla ve configuration in systems that provide redund ant timing sources, it is desirable to mi nimize the output skew between the master and the slave?s output clocks. this can be achieved by sync hronizing the slave to one of the master?s output clocks instead of synchronizing the slave to an external reference. if frame pulse alignment between the timing sources is required, then the crossover link should consist of a clk/fp pair. one method of connecting two zl30116 devices in a master/s lave configuration is shown in figure 8 where there is a dedicated crossover link between timing cards. any of the master?s unused outputs and the slave?s unused inputs can be used as a crossover link. figure 8 - typical mast er/slave configuration sdh_clk0 sdh_fp0 ref0 sdh_clk0 sdh_fp0 (master) external crossover link ref2 sync2 zl30116 clk bus 1 references ref1 sdh_clk0 sdh_fp0 ref0 (slave) external zl30116 references ref1 fp bus 1 sdh_clk0 sdh_fp0 ref2 sync2 clk bus 2 fp bus 2 line card dpll ref0 sync0 ref1 sync1 ref0 sync0 ref1 sync1 (zl30119, zl30117, zl30106) line card dpll (zl30119, zl30117, zl30106)
zl30116 data sheet 21 zarlink semiconductor inc. 1.8 external feedback inputs in addition to the static delay compensation described in the ?external feedback inputs? section on page 21, the zl30116 also provides the option of dynamic delay compen sation to minimize path delay variation associated with external clock drivers and long pcb traces. this is acco mplished by re-directing the internal dpll1 feedback path to external pins and closing the loop externally as shown in figure 9. figure 9 - external feedback configuration feedback synthesizer fb_clk ext_fb_clk ext_fb_fp fb_clk fb_fp fb_fp dpll1 sonet/p0/p1 synthesizers clk fp ref sync path delay clk_in fp_in clk_out fp_out clk_in fp_in clk_out fp_out zl30116 realignment of input and output clocks
zl30116 data sheet 22 zarlink semiconductor inc. 2.0 software configuration the zl30116 is mainly controlled by accessing software re gisters through the serial peri pheral interface (spi). the device can be configured to operate in a highly automated manner which minimi zes its interaction with the system?s processor, or it can operate in a manual mode where the system processor controls mo st of the operation of the device. the following table provides a summary of the registers avai lable for status updates and configuration of the device. . addr (hex) register name reset value (hex) description type miscellaneous registers 00 id_reg c0 chip and version identification and reset ready indication register r 01 use_hw_ctrl 00 allows some functions of the device to be controlled by hardware pins r/w interrupts 02 ref_fail_isr ff reference failure interrupt service register r 03 dpll1_isr 70 dpll1 interrupt service register sticky r 04 dpll2_isr 00 dpll2 interrupt service register sticky r 05 ref_mon_fail_0 ff ref0 and ref1 failure indications sticky r 06 ref_mon_fail_1 ff ref2 and ref3 failure indications. sticky r 07 ref_mon_fail_2 ff ref4 and ref5 failure indications sticky r 08 ref_mon_fail_3 ff ref6 and ref7 failure indications sticky r 09 ref_fail_isr_mask 00 reference failure interrupt service register mask r/w 0a dpll1_isr_mask 00 dpll1 interrupt service register mask r/w 0b dpll2_isr_mask 00 dpll2 interrupt service register mask r/w 0c ref_mon_fail_mask_0 ff control register to mask each failure indicator for ref0 and ref1 r/w 0d ref_mon_fail_mask_1 ff control register to mask each failure indicator for ref2 and ref3 r/w 0e ref_mon_fail_mask_2 ff control register to mask each failure indicator for ref4 and ref5 r/w table 5 - register map
zl30116 data sheet 23 zarlink semiconductor inc. 0f ref_mon_fail_mask_3 ff control register to mask each failure indicator for ref6 and ref7 r/w reference monitor setup 10 detected_ref_0 ff ref0 and re f1 auto-detected frequency value status register r 11 detected_ref_1 ff ref2 and re f3 auto-detected frequency value status register r 12 detected_ref_2 ff ref4 and re f5 auto-detected frequency value status register r 13 detected_ref_3 ff ref6 and re f7 auto-detected frequency value status register r 14 detected_sync_0 ee sync0 and sync1 auto-detected frequency value and sync failure status register r 15 detected_sync_1 0e sync2 auto-de tected frequency value and sync valid status register r 16 oor_ctrl_0 33 control register for the ref0 and ref1 out of range limit r/w 17 oor_ctrl_1 33 control register for the ref2 and ref3 out of range limit r/w 18 oor_ctrl_2 33 control register for the ref4 and ref5 out of range limit r/w 19 oor_ctrl_3 33 control register for the ref6 and ref7 out of range limit r/w 1a gst_mask_0 ff control register to mask the inputs to the guard soak timer for ref0 to ref3 r/w 1b gst_mask_1 ff control register to mask the inputs to the guard soak timer for ref4 to ref7 r/w 1c gst_qualif_time 1a control register for the guard_soak_timer qualification time and disqualification time for the references r/w dpll1 control 1d dpll1_ctrl_0 see register description control register for the dpll1 filter control; phase slope limit, bandwidth and hitless switching r/w 1e dpll1_ctrl_1 see register description holdover update time, filter_out_en, freq_offset_en, revert enable r/w addr (hex) register name reset value (hex) description type table 5 - register map (continued)
zl30116 data sheet 24 zarlink semiconductor inc. 1f dpll1_modesel see register description control register for the dpll1 mode of operation r/w 20 dpll1_refsel 00 dpll1 reference selection or reference selection status r/w 21 dpll1_ref_fail_mask 3c control register to mask each failure indicator (scm, cfm, pfm and gst) used for automatic reference switching and automatic holdover r/w 22 dpll1_wait_to_restore 00 control register to indicate the time to restore a previous failed reference r/w 23 dpll1_ref_rev_ctrl 00 control register for the ref0 to ref7 enable revertive signals r/w 24 dpll1_ref_pri_ctrl_0 10 control register for the ref0 and ref1 priority values r/w 25 dpll1_ref_pri_ctrl_1 32 control register for the ref2 and ref3 priority values r/w 26 dpll1_ref_pri_ctrl_2 54 control register for the ref4 and re5 priority values r/w 27 dpll1_ref_pri_ctrl_3 76 control register for the ref6 and ref7 priority values r/w 28 dpll1_lock_holdover_status 04 dpll1 lock and holdover status register r 29 dpll1_pullinrange 03 control register for the pull-in range r/w dpll2 control 2a dpll2_ctrl_0 00 control register to program the dpll2: hitless switching, the phase slope limit and dpll enable r/w 2b dpll2_ctrl_1 04 control register to program the dpll2: filter_out_en, freq_offse t_en, revert enable r/w 2c dpll2_modesel 02 control register to select the mode of operation of the dpll2 r/w 2d dpll2_refsel 00 dpll2 reference selection or reference selection status r/w 2e dpll2_ref_fail_mask 3c control register to mask each failure indicator (scm, cfm, pfm and gst) used for automatic reference switching and automatic holdover r/w 2f dpll2_wait_to_restore 00 control register to indicate the time to restore a previous failed reference for the dpll2 path r/w 30 dpll2_ref_rev_ctrl 00 control register for the ref0 to ref7 enable revertive signals r/w addr (hex) register name reset value (hex) description type table 5 - register map (continued)
zl30116 data sheet 25 zarlink semiconductor inc. 31 dpll2_ref_pri_ctrl_0 10 control register for the ref0 and ref1 priority values r/w 32 dpll2_ref_pri_ctrl_1 32 control register for the ref2 and ref3 priority values r/w 33 dpll2_ref_pri_ctrl_2 54 control register for the ref4 and re5 priority values r/w 34 dpll2_ref_pri_ctrl_3 76 control register for the ref6 and ref7 priority values r/w 35 dpll2_lock_holdover_status 04 dpll2 lock and holdover status register r p0 configuration registers 36 p0_enable 8f control register to enable p0_clk0, p0_clk1, p0_fp0, p0_fp1, the p0 synthesizer and select the source r/w 37 p0_run 0f control register to generate p0_clk0, p0_clk1, p0_fp0 and p0_fp1 r/w 38 p0_freq_0 00 control register for the [7:0] bits of the n of n*8k clk0 r/w 39 p0_freq_1 01 control regi ster for the [13:8] bits of the n of n*8k clk0 r/w 3a p0_clk0_offset90 00 control register for the p0_clk0 phase position coarse tuning r/w 3b p0_clk1_div 3e control register for the p0_clk1 frequency selection r/w 3c p0_clk1_offset90 00 control register for the p0_clk1 phase position coarse tuning r/w 3d p0_offset_fine 00 control register for the output/output phase alignment fine tuning for p0 path r/w 3e p0_fp0_freq 05 control register to select the p0_fp0 frame pulse frequency r/w 3f p0_fp0_type 83 control register to select fp0 type r/w 40 p0_fp0_offset_0 00 bits [7:0] of the programmable frame pulse phase offset in multiples of 1/262.14 mhz r/w 41 p0_fp0_offset_1 00 bits [15:8] of the programmable frame pulse phase offset in multiples of 1/262.14 mhz r/w 42 p0_fp0_offset_2 00 bits [21:16] of the programmable frame pulse phase offset in multiples of 8 khz cycles r/w 43 p0_fp1_freq 05 control register to select p0_fp1 frame pulse frequency r/w addr (hex) register name reset value (hex) description type table 5 - register map (continued)
zl30116 data sheet 26 zarlink semiconductor inc. 44 p0_fp1_type 11 control register to select fp1 type r/w 45 p0_fp1_offset_0 00 bits [7:0] of the programmable frame pulse phase offset in multiples of 1/262.144 mhz r/w 46 p0_fp1_offset_1 00 bits [15:8] of the programmable frame pulse phase offset in multiples of 1/262.144 mhz r/w 47 p0_fp1_offset_2 00 bits [21:16] of the programmable frame pulse phase offset in multiples of 8 khz cycles r/w p1 configuration registers 48 p1_enable 83 control register to enable p1_clk0, p1_clk1, the p1 synthesizer and select the source r/w 49 p1_run 03 control register to generate enable/disable p1_clk0 and p1_clk1 r/w 4a p1_freq_0 c1 control register for the [7:0] bits of the n of n*8k clk0 r/w 4b p1_freq_1 00 control register for the [13:8] bits of the n of n*8k clk0 r/w 4c p1_clk0_offset90 00 control register for the p1_clk0 phase position coarse tuning r/w 4d p1_clk1_div 3f control register for the p1_clk1 frequency selection r/w 4e p1_clk1_offset90 00 control register for the p1_clk1 phase position coarse tuning r/w 4f p1_offset_fine 00 control register for the output/output phase alignrment fine tuning r/w sdh configuration registers 50 sdh_enable 8f control register to enable sdh_clk0, sdh_clk1, sdh_fp0, sdh_fp1 and the sdh pll r/w 51 sdh_run 0f control register to generate sdh_clk0, sdh_clk1, sdh_fp0 and sdh_fp1 r/w 52 sdh_clk_div 42 control register for the sdh_clk0 and sdh_clk1 frequency selection r/w 53 sdh_clk0_offset90 00 control register for the sdh_clk0 phase position coarse tuning r/w 54 sdh_clk1_offset90 00 control register for the sdh_clk1 phase position coarse tuning r/w 55 sdh_offset_fine 00 control register for the output/output phase alignrment fine tuning for sdh path r/w addr (hex) register name reset value (hex) description type table 5 - register map (continued)
zl30116 data sheet 27 zarlink semiconductor inc. 56 sdh_fp0_freq 05 control register to select the sdh_fp0 frame pulse frequency r/w 57 sdh_fp0_type 23 control regist er to select fp0 type r/w 58 sdh_fp0_offset_0 00 bits [7:0] of the programmable frame pulse phase offset in multiples of 1/311.04 mhz r/w 59 sdh_fp0_offset_1 00 bits [15:8] of the programmable frame pulse phase offset in multiples of 1/311.04 mhz r/w 5a sdh_fp0_offset_2 00 bits [21:16] of the programmable frame pulse phase offset in multiples of 8 khz cycles r/w 5b sdh_fp1_freq 03 control register to select sdh_fp1 frame pulse frequency r/w 5c sdh_fp1_type 03 control regist er to select fp1 type r/w 5d sdh_fp1_fine_offset_0 00 bits [7:0] of the programmable frame pulse phase offset in multiples of 1/311.04 mhz r/w 5e sdh_fp1_fine_offset_1 00 bits [15:8] of the programmable frame pulse phase offset in multiples of 1/311.04 mhz r/w 5f sdh_fp1_coarse_offset 00 programmable frame pulse phase offset in multiples of 8 khz cycles r/w differential out put configuration 60 diff_ctrl a3 control register to enable diff0, diff1 r/w 61 diff_sel 53 control register to select the diff0 and diff1 frequencies r/w external feedback configuration 62 fb_control 80 control register to enable fb_clk and the fb pll, int/ext feedback select r/w 63 fb_offset_fine f5 control register for the output/output phase alignment fine tuning r/w 64 reserved n * 8 khz reference control 65 ref_freq_mode_0 00 control register to set whether to use auto detect, customa or custom b for ref0 to ref3 r/w 66 ref_freq_mode_1 00 control register to set whether to use auto detect, customa or cust omb for ref4 to ref7 r/w 67 custa_mult_0 00 control register fo r the [7:0] bits of the custom configuration a. this is the n integer for the n*8khz reference monitoring. r/w addr (hex) register name reset value (hex) description type table 5 - register map (continued)
zl30116 data sheet 28 zarlink semiconductor inc. 68 custa_mult_1 00 control register fo r the [13:8] bits of the custom configuration a. this is the n integer for the n*8khz reference monitoring. r/w 69 custa_scm_low 00 control register for the custom configuration a: single cycle scm low limiter r/w 6a custa_scm_high 00 control register for the custom configuration a: single cycle scm high limiter r/w 6b custa_cfm_low_0 00 control register for the custom configuration a: the [7:0] bits of the single cycle cfm low limit r/w 6c custa_cfm_low_1 00 control register for the custom configuration a: the [15:0] bits of the single cycle cfm low limit r/w 6d custa_cfm_hi_0 00 control register for the custom configuration a: the [7:0] bits of the single cycle cfm high limit r/w 6e custa_cfm_hi_1 00 control register for the custom configuration a: the [15:0] bits of the single cycle cfm high limiter r/w 6f custa_cfm_cycle 00 control register for the custom configuration a: cfm reference monitoring cycles - 1 r/w 70 custa_div 00 control register for the custom configuration a: enable the use of ref_div4 for the cfm and pfm inputs r/w 71 custb_mult_0 00 control register fo r the [7:0] bits of the custom configuration b. this is the 8 k integer for the n*8khz reference monitoring. r/w 72 custb_mult_1 00 control register fo r the [13:8] bits of the custom configuration b. this is the 8 k integer for the n*8khz reference monitoring. r/w 73 custb_scm_low 00 control register for the custom configuration b: single cycle scm low limiter r/w 74 custb_scm_high 00 control register for the custom configuration b: single cycle scm high limiter r/w 75 custb_cfm_low_0 00 control register for the custom configuration b: the [7:0] bits of the single cycle cfm low limiter. r/w 76 custb_cfm_low_1 00 control register for the custom configuration b: the [15:0] bits of the single cycle cfm low limiter. r/w addr (hex) register name reset value (hex) description type table 5 - register map (continued)
zl30116 data sheet 29 zarlink semiconductor inc. 3.0 references advancedtca, atca and the advancedtca and atca logo s are trademarks of the pci industrial computer manufacturers group. 77 custb_cfm_hi_0 00 control register for the custom configuration b: the [7:0] bits of the single cycle cfm high limiter. r/w 78 custb_cfm_hi_1 00 control register for the custom configuration b: the [15:0] bits of the single cycle cfm high limiter. r/w 79 custb_cfm_cycle 00 control register for the custom configuration b: cfm reference monitoring cycles - 1 r/w 7a custb_div 00 control register for the custom configuration b: enable the use of ref_div4 for the cfm and pfm inputs r/w 7b - 7f reserved addr (hex) register name reset value (hex) description type table 5 - register map (continued)

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