Ic Pin Function Descriptions - Sony MCE-CX80K Service Manual

6-15. IC PIN FUNCTION DESCRIPTIONS

• VIDEO BOARD IC502 M30620MA-2A1FP
Pin No. Pin Name
1 SENSE
2 SENSE CLK
3 DSP DATA
4 DSP LATCH
5 DSP CLK
6 TSENS
7 REMOTE IN
8 BYTE
9 VSS
10 DSP MUTE
11 CTRL1
12 XRESET
13 XOUT
14 VSS
15 XIN
16 VCC
17 NMI
18 SCOR
19 DSENS
20 CL680 HINT
21 CL680 SEL
22 DF LATCH
23 CL680 HRDY
24 CL680 RESET
25 JOG1
26 JOG2
27 CTRL2
28 LDON
29 CLK
30 DATA
31 DATA1O
32 DATA1I
33 CLK1
34 RTS1
35
XVLEVEL DOWN
36 SUBQ DATA
37
SUBQ CLK
38 P.ON
39 BUS XRDY
40 SHARPNESS
41 BUS XHOLD
42, 43 BUS
44 SHIMUKE
34
(CD MECHANISM CONTROLLER)
I/O
I
Internal status (SENSE) signal input from the CXD2545Q (IC101)
O
Sense serial data reading clock signal output to the CXD2545Q (IC101)
O Serial data output to the CXD2545Q (IC101)
O
Serial data latch pulse output to the CXD2545Q (IC101)
O
Serial data transfer clock signal output to the CXD2545Q (IC101)
I
Disc tray status detection signal input terminal
I Remote control signal input from the remote control receiver (IC802)
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 CXD2545Q (IC101) "H": muting on
O
RF equalizer selection signal output terminal "L": double speed
Reset signal input from the reset signal generator (IC903) "L": reset
I
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 (+5V)
I
Non-maskable interrupt input terminal (fixed at "H" in this set)
I
Subcode sync (S0+S1) detection signal input from the CXD2545Q (IC101)
I Disc status detection signal input terminal
I
Interrupt request signal input from the MPEG video/audio decoder (IC505)
O
Command selection signal output to the MPEG video/audio decoder (IC505)
O
Serial data latch pulse output to the D/A converter (IC509) "L" active
I
Ready status detection signal input from the MPEG video/audio decoder (IC505)
O
Reset signal output to the MPEG video/audio decoder (IC505) "L": reset
I
Rotary encoder jog dial pulse input terminal 1
I
Rotary encoder jog dial pulse input terminal 2
O
RF equalizer selection signal output terminal "H": double speed
O
Laser on/off selection signal output to the CXA1821M (IC103) "H": laser on
Communication data reading clock signal input or communication data transfer clock signal
I/O
output terminal Not used (fixed at "H")
I/O
Communication data input or communication data output terminal Not used (pull up)
Serial data output to the MPEG video/audio decoder (IC505), D/A converter (IC509) and
O
fluorescent indicator tube driver (IC801)
I
Serial data input from the MPEG video/audio decoder (IC505)
Serial data transfer clock signal output to the MPEG video/audio decoder (IC505), D/A converter
O
(IC509) and fluorescent indicator tube driver (IC801)
I/O Dedicated fo writing flash ROM
O
Video output level control signal output to the MPEG video/audio decoder (IC505)
I
Sub-code Q data input from the CXD2545Q (IC101)
O
Sub-code Q data reading clock signal output to the CXD2545Q (IC101)
O Power on/off control signal output terminal "L": standby, "H": power on
I
Ready signal input terminal Not used (fixed at "H")
O
Sharpness control signal output of the video signal (Y signal) "H" active ("L": normal)
I
Hold signal input terminal Not used (fixed at "H")
O
Not used (open)
I
Destination setting terminal "L": Chinese, "H": English
Function