64
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BD (MD) BOARD IC121 CXD2656AR
Pin No.
Pin Name
I/O
Description
1
MNT0 (FOK)
O
Focus OK signal output to the system controller (IC601)
“H” is output when focus is on (“L”: NG)
2
MNT1 (SHOCK)
O
Track jump detection signal output to the system controller (IC601)
3
MNT2 (XBUSY)
O
Busy monitor signal output to the system controller (IC601)
4
MNT3 (SLOCK)
O
Spindle servo lock status monitor signal output to the system controller (IC601)
5
SWDT
I
Writing serial data signal input from the system controller (IC601)
6
SCLK
I (S)
Serial data transfer clock signal input from the system controller (IC601)
7
XLAT
I (S)
Serial data latch pulse signal input from the system controller (IC601)
8
SRDT
O (3)
Reading serial data signal output to the system controller (IC601)
9
SENS
O (3)
Internal status (SENSE) output to the system controller (IC601)
10
XRST
I (S)
Reset signal input from the system controller (IC601) “L”: reset
11
SQSY
O
Subcode Q sync (SCOR) output to the system controller (IC601)
“L” is output every 13.3 msec Almost all, “H” is output
12
DQSY
O
Digital In U-bit CD format subcode Q sync (SCOR) output to the system controller (IC601)
“L” is output every 13.3 msec Almost all, “H” is output
13
RECP
I
Laser power selection signal input from the system controller (IC601)
“L”: playback mode, “H”: recording mode
14
XINT
O
Interrupt status output to the system controller (IC601)
15
TX
I
Recording data output enable signal input from the system controller (IC601)
Writing data transmission timing input (Also serves as the magnetic head on/off output)
16
OSCI
I
System clock signal (90.3168 MHz) input terminal
17
OSCO
O
System clock signal (512Fs=90.3168 MHz) output terminal Not used (open)
18
XTSL
I
Input terminal for the system clock frequency setting
“L”: 45.1584 MHz, “H”: 90.3168 MHz (fixed at “H” in this set)
19
DIN0
I
Digital audio signal input terminal when recording mode (for digital optical input)
20
DIN1
I
Digital audio signal input terminal when recording mode Not used (fixed at “L”)
21
DOUT
O
Digital audio signal output terminal when playback mode Not used (open)
22
DATAI
I
Serial data input from the system controller (IC601)
23
LRCKI
I
L/R sampling clock signal (44.1 kHz) input from the system controller (IC601)
24
XBCKI
I
Bit clock signal (2.8224 MHz) input from the system controller (IC601)
25
ADDT
I
Recording data input from the A/D, D/A converter (IC401)
26
DADT
O
Playback data output to the A/D, D/A converter (IC401)
27
LRCK
O
L/R sampling clock signal (44.1 kHz) output to the A/D, D/A converter (IC401)
28
XBCK
O
Bit clock signal (2.8224 MHz) output to the A/D, D/A converter (IC401)
29
FS256
O
Clock signal (11.2896 MHz) output to the A/D, D/A converter (IC401)
30
DVDD
—
Power supply terminal (+3.3V) (digital system)
31 to 34
A03 to A00
O
Address signal output to the D-RAM (IC124)
35
A10
O
Address signal output to the D-RAM (IC124)
36 to 40
A04 to A08
O
Address signal output to the D-RAM (IC124)
41
A11
O
Address signal output to the external D-RAM Not used (open)
42
DVSS
—
Ground terminal (digital system)
43
XOE
O
Output enable signal output to the D-RAM (IC124) “L” active
* I (S) stands for schmitt input, I (A) for analog input, O (3) for 3-state output, and O (A) for analog output in the column I/O.
(DIGITAL SIGNAL PROCESSOR, DIGITAL SERVO PROCESSOR, EFM/ACIRC ENCODER/DECODER,
SHOCK PROOF MEMORY CONTROLLER, ATRAC ENCODER/DECODER)
