Ic Pin Function Description - Sony ST-S9 Service Manual

ST-S9
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5-10. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC501 M30622MGA-A77FP (SYSTEM CONTROLLER)
Pin No. Pin Name I/O
1 AMP-DATA O
Serial data output to the M61512FP (IC607)
2 AMP-CLK O
Serial data transfer clock signal output to the M61512FP (IC607)
3 AMP-LAT O Serial data latch pulse signal output to the M61512FP (IC607)
4 SIRCS I Remote control signal input from the remote control receiver (IC101)
Serial data output to the CXD9617R (IC601), digital audio interface receiver (IC604) and digital
5 DIG-TX O
filter (IC606)
6 DSP-RX I Serial data input from the digital audio interface receiver (IC604)
Serial data transfer clock signal output to the CXD9617R (IC601), digital audio interface receiver
7 DIG-CLK O
(IC604) and digital filter (IC606)
8 GND —
Ground terminal
9 CNVSS —
Not used
10 XCIN I Sub system clock input terminal (32.768 kHz)
11 XCOUT O Sub system clock output terminal (32.768 kHz)
System reset signal input from the reset signal generator (IC551) "L": reset
12 RESET I
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 (16 MHz)
14 VSS — Ground terminal
15 XIN I Main system clock input terminal (16 MHz)
16 VCC — Power supply terminal (+5V)
17 NMI I
Non-maskable interrupt input terminal Fixed at "H" in this set
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Serial data transfer clock signal input from the RDS decoder on the FM/AM tuner unit
18 RDS-INT I
(Used for the AEP and UK models)
19 — — Not used (open)
Serial data input from the RDS decoder on the FM/AM tuner unit
20 RDS-DATA
I
(Used for the AEP and UK models)
21 ST-MUTE O Tuner muting on/off control signal output to the FM/AM tuner unit "L": muting on
22 ST-CE O Chip enable signal output to the FM/AM tuner unit
23 ST-DOUT O Serial data output to the FM/AM tuner unit
24 — —
Not used (open)
25 ST-DIN
I Serial data input from the FM/AM tuner unit
26 — —
Not used (open)
27 ST-CLK
O Serial data transfer clock signal output to the FM/AM tuner unit
28 — —
Not used (open)
Communication data reading clock signal input or transfer clock signal output with the display
29 IIC CLK I/O
controller (IC601) and DVP-S9
30 IIC DATA I/O Communication data bus with the display controller (IC601) and DVP-S9
31 to 34 NO-USE — Not used
35 to 40 — — Not used (open)
41 M-RESET O Reset signal output to the display controller (IC601) "L": reset
42 to 50 — — Not used (open)
51 NO-USE — Not used
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52 to 57 — — Not used (open)
58 EXP-IN DATA I Serial data input from the I/O expander in the TA-S9D
59 EXP-OUT DATA O Serial data output to the I/O expander in the TA-S9D
60 EXP-LAT O Serial data latch pulse signal output to the I/O expander in the TA-S9D
61 EXP-CLK O Serial data transfer clock signal output to the I/O expander in the TA-S9D
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Pin No. Pin Name I/O
62 VCC — Power supply terminal (+5V)
63 SOFT-TEST
O Soft test output terminal Not used (open)
64 VSS — Ground terminal
65 to 70 — — Not used (open)
71 LINE-MUTE
O Audio line muting on/off control signal output to the audio line circuit "L": muting on
72 — — Not used (open)
73 DISPLAY KEY I
DISPLAY switch (S601) input terminal
74 POWER KEY I Power on/off switch in the TA-S9D input terminal
75 DIR-UNLOCK I PLL lock error and data error flag input from the digital audio interface receiver (IC604)
76 DIR-CS O
Chip enable signal output to the digital audio interface receiver (IC604)
77 DIR-XSTATE I Source clock switching monitor input from the digital audio interface receiver (IC604)
78 DIR-RX I Read data input from the digital audio interface receiver (IC604)
79 CODEC-SMUTE O
Soft muting on/off control signal output to the A/D, D/A converter (IC605) "L": muting on
80 DSP-ACK I Acknowledge signal input from the CXD9617R (IC601)
81 DSP-CS
O Chip select signal output to the CXD9617R (IC601)
82 DSP-DECODE I Decode signal input from the CXD9617R (IC601)
83 to 86 — — Not used (open)
87 STEREO I
FM stereo detection signal input from the FM/AM tuner unit "L": stereo
88 TUNED I Tuning detection signal input from the FM/AM tuner unit "L": tuned
89 to 91 — — Not used (open)
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92 MODEL-IN
3 7 6 I 3 Model setting terminal
93 SPEC-IN I Specification setting terminal
94 — —
Not used (open)
95 V-MUTE O Video muting on/off control signal output terminal "L": muting on Not used (open)
96 AVSS — Ground terminal
97 — —
Not used (open)
98 VREF I Reference voltage (+5V) input terminal
99 AVCC — Power supply terminal (+5V)
AC cut on/off detection signal input from the reset signal generator (IC551)
100 AC-CUT I
"L": AC cut on, "H": AC cut off or checked
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