Philips ST-D777ES Service Manual page 29

IC601 HD6432237 SYSTEM CONTROL (MAIN BOARD)
Pin No. Pin Name I/O
1 – 14 N.C —
15 V —
CC
16 N.C —
17 V —
SS
18 – 28 N.C —
29 SDA I/O
30 SCL O
31 DP-SDA I/O
32 DP-SCL O
33 GND —
34 AP-DI O
35 AP-DO I
36 AP-CL O
37 AP-CE O
38 – 44 N.C —
45 GND —
46 A-STP I
47 STEREO I
48 – 49 N.C —
50 SIRCS I
51 GND —
52 SIGNAL I
53 KEY1 I
54 KEY2 I
55 KEY3 I
56 VREF —
57 AV —
CC
58, 59 N.C —
60 OSC2 —
61 OSC1 —
62 RESET I
63 POWER I
64 STBY —
65 V —
CC
66 XTAL —
67 V —
SS
68 EXTAL —
69 N.C —
70 N.C —
71 N.C —
72 AFMUTE O
73 DF-DA O
74 DF-CL O
75 DF-CE O
76 DA-RST O
77 DA-MUTE O
78 FL-RST O
79 FL-DA O
80 N.C —
Input output terminal - not used
Power supply terminal (+3.3 V)
Input output terminal - not used
Ground terminal
Input output terminal - not used
Data input output terminal for EEPROM (HN58X2432)
Clock output terminal for EEPROM (HN58X2432)
Data output terminal to DAM front end
Clock output terminal to DAM front end
Ground terminal
Data output terminal to FM/AM PLL IC (IC72130)
Data input terminal from FM/AM PLL IC (IC72130)
Clock output terminal to FM/AM PLL IC (IC72130)
Enable terminal to FM/AM PLL IC (IC72130)
Input output terminal - not used
Ground terminal
Auto stop detection signal input terminal
Stereo detection signal input terminal
Input terminal - not used
CIRCS signal input terminal
Input terminal - ground
Signal level detection terminal
Key control 1
Key control 2
Key control 3
Reference voltage input terminal (+3.3 V)
Power supply terminal (+3.3 V)
Mode terminal (fixed at +3.3 V)
Sub-clock input - open
Sub-clock input - fixed at +3.3 V
System reset input terminal
AC OFF detection input terminal
Standby terminal - fixed at +3.3 V
Power supply terminal (+3.3 V)
Master clock (10 MHz)
Ground terminal
Master clock (10 MHz)
Not used - fixed at ground
Mode terminal (fixed at +3.3 V)
Not used - fixed at ground
Mute control output terminal
Data output terminal for D/F (CXD8762) control
Clock output terminal for D/F (CXD8762) control
Enable output terminal for D/F (CXD8762) control
Reset output terminal to D/F (CXD8762)
Terminal for D/F (CXD8762) mute control
Reset output terminal to fluorescence display tube drive IC (MSM9202)
Data output terminal to fluorescence display tube drive IC (MSM9202)
Input terminal - fixed at ground
Description
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