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1CY M74 P43 4B/4 35B
fax id: 2044
PRELIMINARY
CYM76S683/684
512K/1M L2 Cache Module for Power PC Systems
Features
* High-performance cache modules based on synchronous 64K x 18 data BSRAM * Operates at 50, 60, and 66 MHz * 160-position DIMM module * 3.3V data inputs/outputs signed for the Tsunami Catalyst type of Power PC machines. The modules are based on the Cypress high performance 64K x 18 flow through Synchronous Burst SRAMs. Multiple ground pins and on-board decoupling capacitors ensure high performance with maximum noise immunity. All components on the cache modules are surface mounted on a multi-layer epoxy laminate (FR-4) substrate. The contact pins are plated with 150 micro-inches of nickel covered by 30 micro-inches of gold.
Functional Description
These cache modules are designed for systems based on the Power PC processors. These modules are specifically de-
Logic Block Diagram
32K x 8 (2) WE A CE WE A TagWE TagCE A15:0 ADV ADSC ADSP OE
CLK0 CLK1 CLK2 CLK3
Tag13:0
64K x 18 (4) A15:0
D63:0
D13:8
ADV ADSC ADSP OE CS
D7:0
D63:48 D47:32 D31:16 D15:0
CE
76S684 Only
64K x 18 (4)
A15:0 A12 ADV ADSC ADSP OE CS
D63:48 D47:32 D31:16 D15:0
240D
/A12
CLK
CY2305
CLK0 CLK1 CLK2 CLK3
CYM76S683 CYM76S684
Cachesize1 GND NC
Cachesize0 GND GND
Selection Guide
Synchronous Cache Modules Part Number Cache Size System Clock (MHz) ModuleData tCO * ModuleTag tAA *
* - Measured at room temperature
76S683-60 512 KB 60 10.3 ns 10.3 ns
76S684-60 1 MB 60 10.3 ns 10.3 ns
Cypress Semiconductor Corporation
*
3901 North First Street
*
San Jose
*
CA 95134
*
408-943-2600 August 15, 1997
PRELIMINARY
Pin Configuration
Dual Read-Out SIMM (DIMM) Top View
Vcc5 GND D62 D60 D58 D56 GND D54 D52 D50 D48 GND Vcc5 GND D46 D44 D42 D40 GND D 38 D36 D34 D32 GND Vcc5 GND A28 A26 A24 A22 GND A20 A18 A16 A14
Cachesize0 A12
CYM76S683/684
ADV TagOE TagWE GND CLK GND ADSC SLEEP TAGVALID TAG12 TAG10 TAG8 GND TAG6 TAG4 TAG2 TAG0 GND Vcc5 GND D30 D28 D26 D24 GND D22 D20 D18 D16 GND Vcc5 GND D14 D12 D10 D8 GND D6 D4 D2 D0 GND Vcc5
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
160 159 158 157 156 155 154 153 152 151 150 149 148 147 146 145 144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
Vcc3 GND D63 D61 D59 D57 GND D55 D53 D51 D49 GND Vcc3 GND D47 D45 D43 D41 GND D39 D37 D35 D33 GND Vcc3 GND A27 A25 A23 A21 GND A19 A17 A15 A13 GND
Cachesize1
ADSP WE OE A11 GND A10 NC GND TAGDIRTY TAG13 TAG11 TAG9 GND TAG7 TAG5 TAG3 TAG1 GND Vcc3 GND D31 D29 D27 D25 GND D23 D21 D19 D17 GND Vcc3 GND D15 D13 D11 D9 GND D7 D5 D3 D1 GND Vcc3
2
PRELIMINARY
Pin Definitions
Common Signals Vcc5 Vcc3 GND A15:0 OE D63:0 Tag13:0 TAGVALID TAGDIRTY TagOE TagWE ADSP ADSC ADV CLK Cachesize[0:1] NC 5V Supply 3.3V Supply Ground Addresses from processor Output Enable Data lines from processor Tag data bits Tag Valid address signal Tag dirty signal Tag Output Enable signal Tag Write Enable signal Processor Address Strobe Cache Controller Address Strobe Burst Address Advance Clock signals Signals to indicate the cache size Signal not connected on module Description
CYM76S683/684
Presence Detect Pins
Cachesize1 CacheSize0 CYM76S683 CYM76S684 Gnd NC Gnd Gnd
3
PRELIMINARY
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature .................................. -55C to +125C Ambient Temperature with Power Applied ......................................... -0C to +70C 3.3V Supply Voltage to Ground Potential....... -0.5V to +4.6V 5V Supply Voltage to Ground Potential.......... -0.5V to +7.0V DC Voltage Applied to Outputs in High Z State ............................................... -0.5V to +4.6V Range Commercial
CYM76S683/684
DC Input Voltage ............................................-0.5V to +4.6V Output Current into Outputs (LOW)............................. 20 mA
Operating Range
Ambient Temperature 0 to 70C VCC5 5V 5% VCC3 3.3V +10%-5%
Electrical Characteristics Over the Operating Range
Parameter VIH VIL VOH VOL ICC (76S683) ICC (76S684) Description Input HIGH Voltage Input LOW Voltage Output HIGH Voltage Output LOW Voltage VCC Operating Supply Current VCC Operating Supply Current VCC=Min., IOH = -4 mA VCC=Min., IOL = 8 mA VCC=Max., IOUT=0 mA, f=fMAX VCC=Max., IOUT=0 mA, f=fMAX Test Condition Min. 2.0 -0.3 2.4 0.4 TBD TBD Max. VCC3 + 0.3 0.8 Unit V V V V mA mA
Ordering Information
Speed (MHz) 66 Ordering Code CYM76S683PM-66C CYM76S684PM-66C Document #: 38-M-00081 Package Name PM41 PM42 Package Type 160-Pin Dual-Readout DIMM Description 512 KB cache module 1MB cache module Operating Range Commercial
4
PRELIMINARY
Package Diagrams
160-Pin Dual Readout SIMM PM41
CYM76S683/684
160-Pin Dual Readout SIMM PM42
(c) Cypress Semiconductor Corporation, 1997. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges.

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