– 20 –
Pin No.
Pin name
I/O
Pin Description
1
MNT 0
O
Traverse count signal output.
2
MNT 1
O
Track jump detect output.
3
MNT 2
—
Not used (Open).
4
MNT 3
O
Focus OK signal output.
5
SWDT
I
Inputs write data signal from system control (IC801).
6
SCLK
I
Inputs serial clock signal from system control (IC801).
7
XLAT
I
Inputs serial latch signal from system control (IC801).
8
SRDT
O
Outputs write data signal to system control (IC801).
9
SENS
O
Outputs internal status (SENS) to system control (IC801).
10
XRST
I
Inputs reset signal from system control (IC801).
L : Reset
11
SQSY
O
Output subcode Q sync (SCOR) to system control (IC801).
Outputs “L” every 13.3 msec. Outputs “H” at all most mostly.
12
DQSY
O
Outputs digital-in U-bit CD format subcode Q sync (SCOR) to system control (IC801).
Outputs “L” every 13.3 msec. Outputs “H” at all most mostly.
13
WRPWR
I
Inputs laser power switching signal from system control (IC801).
14
NC
—
Not used (Open).
15
TX
I
Input of write data taransmission timing from system control (IC801).
Also used as magnetic field head ON/OFF output.
16
OSC1
O
Clock output (22.5 MHz).
17
OSC0
I
Clock input (22.5 MHz).
18
XTSL
—
Not used (Fixed at “L”)
19
NC
—
Not used (Connect to ground).
20
RVSS
—
Connect to ground.
21
DIN
I
Digital audio signal input pin (For optical input).
22
NC
—
Not used (Open).
23
ADDT
I
Audio data input from A/D converter (IC301).
24
DATA
O
Monitor/decode audio data output to A/D converter (IC301).
25
ALRCK
O
L/R clock output to D/A converter (IC301).
26
ABCK
O
Bit clock signal output to A/D, D/A converter (IC301).
27
FS256
O
11.2896 MHz clock output (MCLK).
28
DV
DD
—
Power supply (+2.8 V) for digital.
29 – 39
A00 – A08, A10, A11
O
Address signal output to DRAM (IC602).
40
DVSS
—
Ground terminal.
41
XOE
O
Output enable contol signal output to DRAM (IC602).
42
XCAS
O
Column address strobe singal output to DRAM (IC602).
43
A09
O
Address signal output to DRAM (IC602).
44
XRAS
O
Row address strobe signal output to DRAM (IC602).
45
XWE
O
Read/write control signal output to DRAM (IC602).
46 – 49
D0 – D3
I
Data signal input from DRAM (IC602).
50
MVCI
—
Not used (Connect to ground).
51
ASYO
O
Playback EFM full-swing output (L : VSS, H : VDD).
52
ASYI
I
Playback EFM asymmetry comparate voltage input.
53
AVDD
—
Power supply (+2.8 V) for analog.
54
BIAS
I
Playback EFM asymmetry circuit constant current input.
55
RFI
I
Inputs playback EFM RF signal from RF amplifier (IC501).
SECTION 6
DIAGRAMS
6-1. IC PIN DESCRIPTIONS
• IC601 CXD2652AR (DIGITAL SERVO, ENC/DEC & ATRAC MEMORY CONTROLLER)
