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CXD2585Q

CD Digital Signal Processor with Built-in Digital Servo

Sony Semiconductor 

CXD2585Q

Pin Description

Pin

No.

Symbol

I/O

Description

1 DVDD0 —

Digital power supply.

2 XRST I

System reset. Reset when low.

3 MUTE I

Mute input (low: off, high: on)

4 DATA I

Serial data input from CPU.

5 XLAT

I

Latch input from CPU. Serial data is latched at the falling edge.

6 CLOK I

Serial data transfer clock input from CPU.

7 SENS O 1, 0 SENS output to CPU.

8 SCLK

I

SENS serial data readout clock input.

9 ATSK I/O 1, 0 Anti-shock input/output.

10 WFCK O 1, 0 WFCK output.

11 XUGF O 1, 0 XUGF output. MNT0 or RFCK is output by switching with the command.

12 XPCK O 1, 0 XPCK output. MNT1 is output by switching with the command.

13 GFS

O 1, 0 GFS output. MNT2 or XROF is output by switching with the command.

14 C2PO O 1, 0 G2PO output. MNT3 or GTOP is output by switching with the command.

15 SCOR O 1, 0 Outputs a high signal when either subcode sync S0 or S1 is detected.

16 C4M

O

1, 0

4.2336MHz output. 1/4 frequency division output for V16M in CAV-W mode

or variable pitch mode.

17 WDCK O 1, 0 Word clock output. f = 2Fs. GRSCOR is output by the command switching.

18 DVSS0 — — Digital GND.

19 COUT I/O 1, 0 Track count signal I/O.

20 MIRR I/O 1, 0 Mirror signal I/O.

21 DFCT I/O 1, 0 Detect signal I/O.

22 FOK

I/O 1, 0 Focus OK signal I/O.

23 PWMI I

Spindle motor external control input.

24 LOCK

I/O 1, 0

GFS is sampled at 460Hz; when GFS is high, this pin outputs a high signal.

If GFS is low eight consecutive samples, this pin outputs low. Input when LKIN = 1.

25 MDP

O 1, Z, 0 Spindle motor servo control output.

26 SSTP

I

Disc innermost track detection signal input.

27 FSTO O 1, 0 2/3 frequency division output for XTAI pin.

28 DVDD1 — — Digital power supply.

29 SFDR O 1, 0 Sled drive output.

30 SRDR O 1, 0 Sled drive output.

31 TFDR O 1, 0 Tracking drive output.

32 TRDR O 1, 0 Tracking drive output.

33 FFDR O 1, 0 Focus drive output.

34 FRDR O 1, 0 Focus drive output.

35 DVSS1 — — Digital GND.

–4–

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