Sony HCD-VX880AV Service Manual page 54

Mini hi-fi component system
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• IC505 CD MECHANISM CONTROLLER (M30624FGFP) (VIDEO BOARD (1/2))
Pin No.
Pin Name
1
SENSE
2
SENSE CLK
3
DSP DATA
4
DSP LATCH
5
DSP CLK
6
LD ON
7
REMOTE IN
8
BYTE
9
CN VSS
10
DSP MUTE
11
CTRL1
12
XRESET
13
XOUT
14
VSS
15
XIN
16
VCC
17
NMI
18
SCOR
19
CTRL2
20
8830 HINT
21
NT/PAL OUT
22
DF LATCH
23
NC
24
8830 RESET
25
JOG1
26
JOG2
27
VMUTE
28
OSD CS
29
I2C/RX
30
I2C/TX
31
S-DATA O
32
S-DATA I
33
S-CLK
34
RTS1
35
NC
36
SUBQ DATA
37
SUBQ CLK
38
P. ON
39
BUS XRDY
40
BUS
41
BUS XHOLD
54
I/O
I
Internal status (SENSE) signal input from the CXD3008Q (IC101)
O
Sense serial data reading clock signal output to the CXD3008Q (IC101)
O
Serial data output to the CXD3008Q (IC101)
O
Serial data latch pulse output to the CXD3008Q (IC101)
O
Serial data transfer clock signal output to the CXD3008Q (IC101)
O
Laser power selection signal output to the CXA2568M (IC103) "H": laser on
I
Remote control signal input terminal Not used (open)
I
"External data bus line byte selection signal input "L": 16 bit, "H": 8 bit (fixed at "L")
Ground terminal
O
Muting on/off control signal output to the CXD3008Q (IC101) "H": mutin on
O
Clock selection signal output to the CXD3008Q (IC101)
"L": 16.9344 MHz (double speed), "H": 33.8688 MHz
I
Reset signal input from the system controller (IC501) "L": reset
For several hundreds msec. after the power supply rises, "L": is input, then it changes to "H"
O
Main system clock output terminal (10 MHz)
Ground terminal
I
Main system clock input terminal (10 MHz)
Power supply terminal (+5 V)
I
Non-maskable interrupt input terminal (fixed at "H" in this set)
I
Subcode sync (S0+S1) detection signal input from the CXD3008Q (IC101)
O
AGC HOLD signal output.
I
Interrupt request signal input from the MPEG video/audio decoder (IC506)
O
NTSC/PAL select signal output.
O
Serial data latch pulse output to the D/A converter (IC509) "L": activ
Not used.
O
Reset signal output to the MPEG video/audio decoder (IC506) "L": reset
I
Rotary encoder jog dial pulse input terminal Not used (fixed at "H")
I
Rotary encoder jog dial pulse input terminal Not used (fixed at "H")
O
Video muting on/off control signal output terminal "L": muting on
O
Chip select signal of D/A converter (IC511).
2
I/O
I
C and serial data input from CD mechanism control (IC501).
2
I/O
I
C and serial data output from CD mechanism control (IC501).
O
Serial data output to the MPEG video/audio decoder (IC505) and D/A convertor (IC509)
I
Serial data input from the MPEG video/audio decoder (IC505)
O
Serial data transfer clock signal output to the MPEG video/audio decoder (IC505) and D/A
converter (IC509)
O
RTS signal to serial port (check connector).
O
Not used (open)
I
Sub-code Q data input from the CXD3008Q (IC101)
O
Sub-code Q data reading clock signal output to the CXD3008Q (IC101)
O
Power on/off control signal output terminal Not used (open)
I
Ready signal input terminal Not used (fixed at "H")
O
Not used (open)
I
Hold signal input terminal Not used (fixed at "H")
Function

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