![background image](http://html.mh-extra.com/html/sony/hcd-v919av/hcd-v919av_service-manual_420898065.webp)
– 97 –
Pin No.
Pin Name
I/O
Function
1
SENSE
I
Internal status (SENSE) signal input from the CXD2545Q (IC101)
2
SENSE CLK
O
Sense serial data reading clock signal output to the CXD2545Q (IC101)
3
DSP DATA
O
Serial data output to the CXD2545Q (IC101)
4
DSP LATCH
O
Serial data latch pulse output to the CXD2545Q (IC101)
5
DSP CLK
O
Serial data transfer clock signal output to the CXD2545Q (IC101)
6
TSENS
I
Disc tray status detection signal input terminal Not used (open)
7
REMOTE IN
I
Remote control signal input terminal Not used (open)
8
BYTE
I
External data bus line byte selection signal input “L”: 16 bit, “H”: 8 bit (fixed at “L”)
9
VSS
—
Ground terminal
10
DSP MUTE
O
Muting on/off control signal output to the CXD2545Q (IC101) “H”: muting on
11
CTRL1
O
RF equalizer selection signal output terminal “L”: double speed
12
XRESET
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”
13
XOUT
O
Main system clock output terminal (10 MHz)
14
VSS
—
Ground terminal
15
XIN
I
Main system clock input terminal (10 MHz)
16
VCC
—
Power supply terminal (+5V)
17
NMI
I
Non-maskable interrupt input terminal (fixed at “H” in this set)
18
SCOR
I
Subcode sync (S0+S1) detection signal input from the CXD2545Q (IC101)
19
ITOU
I
Former type: UART communication data input from the expansion (IC402)
New type: Not used (open)
20
CL680 HINT
I
Interrupt request signal input from the MPEG video/audio decoder (IC505)
21
CL680 SEL
O
Command selection signal output to the MPEG video/audio decoder (IC505)
22
DF LATCH
O
Serial data latch pulse output to the D/A converter (IC509) “L” active
23
CL680 HRDY
I
Ready status detection signal input from the MPEG video/audio decoder (IC505)
24
CL680 RESET
O
Reset signal output to the MPEG video/audio decoder (IC505) “L”: reset
25
JOG1
I
Rotary encoder jog dial pulse input terminal Not used (fixed at “H”)
26
JOG2
I
Rotary encoder jog dial pulse input terminal Not used (fixed at “H”)
27
CTRL2
O
RF equalizer selection signal output terminal “H”: double speed
28
LDON
O
Laser on/off selection signal output to the CXA1821M (IC103) “H”: laser on
RXD
I
Former type: Communication data receive input from the expansion (IC402)
CLK
I/O
New type: Communication data reading clock signal input or transfer clock signal output with the
system controller (IC501), fluorescent indicator tube driver (IC601) and CSV control (IC801)
TXD
O
Former type: Communication data transmit output to the expansion (IC402)
DATA
I/O
New type: Communication data bus with the system controller (IC501), fluorescent indicator tube
driver (IC601) and CSV control (IC801)
31
DATA1O
O
Serial data output to the MPEG video/audio decoder (IC505) and D/A converter (IC509)
32
DATA1I
I
Serial data input from the MPEG video/audio decoder (IC505)
33
CLK1
O
Serial data transfer clock signal output to the MPEG video/audio decoder (IC505) and D/A
converter (IC509)
34
SHARPNESS
O
Sharpness control signal output of the video signal (Y signal) “H” active (“L”: normal)
35
XVLEVEL. DOWN
O
Not used (open)
36
SUBQ DATA
I
Sub-code Q data input from the CXD2545Q (IC101)
37
SUBQ CLK
O
Sub-code Q data reading clock signal output to the CXD2545Q (IC101)
38
P.ON
O
Power on/off control signal output terminal Not used (open)
39
BUS XRDY
I
Ready signal input terminal Not used (fixed at “H”)
29
30
•
VIDEO BOARD IC502 (CD MECHANISM CONTROLLER)
Former type
M30620MC-302FP
New type
M30620MC-305FP