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| Optical disc ICs Servo signal processor for CD use BU9314KS The BU9314KS is a servo signal processor for CD players that incorporates a double-speed, no-adjustment PLL, program servo, and signal processing block, and D / A converter on one chip. It operates off a low power supply voltage, and has low power consumption. FApplications Portable CD players, radio cassette players, and minicomponent systems. FFeatures 1) PLL on chip. Bit clock extraction possible with just a few external components. EFM data modulation is possible. 2) Frame synchronizing signal detection and protection. 3) Servo filters for focus, tracking, and sled are on chip. Characteristics can be controlled using commands from the controller. 4) Sub-code serial output pin provided. 5) Output pins for both P-code and Q-code. 6) CLV sequencer automatically determines the CLV mode. FAbsolute maximum ratings (Ta = 25_C) 7) Track jump sequencer on chip. Possible to jump any number of tracks. 8) De-interleave function, and 2-level error detection, correction and flag processing for C1 and C2. 9) The signal to the D / A converter is output by the MSB first 2'SCOMP serial out, and offset circuit ON and OFF can be controlled for CD-ROM compatibility. 10) 16k bits of on-chip SRAM absorb 4 frames of jitter. 11) Double-speed playback is possible. 12) Built-in 8Fs digital filter and 16-bit D / A converter. 13) Built-in digital de-emphasis function. FRecommended operating conditions (Ta = 25_C) 686 Optical disc ICs FBlock diagram BU9314KS 687 Optical disc ICs FPin descriptions BU9314KS 688 Optical disc ICs BU9314KS 689 Optical disc ICs BU9314KS 690 Optical disc ICs FInput / output circuits BU9314KS 691 Optical disc ICs FElectrical characteristics Digital system characteristics (unless otherwise noted, Ta = 25_C and VDD = 5V) BU9314KS 692 Optical disc ICs Analog system characteristics (unless otherwise noted, Ta = 25_C, VDD = 5V, and VC reference) BU9314KS 693 Optical disc ICs FExternal dimensions (Units: mm) BU9314KS 694 |
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