Sony SS-US501, Service Manual

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SS-US501/SW-US501/UZ-US501
Pin No. Pin Name I/O Description
56 LCD-CS O Chip select signal output to the LCD driver “L” active
57 NC —
Not used
58 BVDD — Power supply terminal (+3.3V) (for bus interface)
59 BVSS — Ground terminal (for bus interface)
60, 61 NC —
Not used
62 READY-H O Power on/off control signal output terminal with APC “H”: power on
63, 64 NC —
Not used
65 HP MUTE O Headphone muting on/off control signal output terminal “H”: muting on
66 HP S/W I
Headphone detection signal input terminal “H”: headphone in
67 APC LED O
LED drive signal output of APC indicator “H”: LED on
68 VOL-STB O Serial data latch pulse signal output to the electrical volume
69 VOL-CLK O Serial data transfer clock signal output to the electrical volume
70 VOL-DATA O Serial data output to the electrical volume
71 POWER LED O
LED drive signal output of power on indicator “H”: LED on
72 NC —
Not used
73 STAND BY LED O
LED drive signal output of standby indicator “H”: LED on
74 AVDD — Power supply terminal (+5V) (for A/D converter)
75 AVSS — Ground terminal (for A/D converter)
76 AVREF I
Reference voltage (+5V) input terminal (for A/D converter)
77 to 80 NC —
Not used
81 AUDIO DEC I Auto analog input level detection signal input terminal
82 KEY1 I
Top panel key input terminal (A/D input)
83 V/R I
VOLUME key input terminal (A/D input)
84 NC —
Not used
85 DIGITAL DEC I Auto digital input level detection signal input terminal
86 to 89 NC —
Not used
90 STOP I
AC cut detection signal input terminal
91 SIRCS I
SIRCS signal input terminal
92 NC —
Not used
93 INT I Top panel key input and sircs signal input detection signal input terminal with power save mode
94 to 97 NC —
Not used
98 CO-S/MUTE O Soft muting on/off control signal output to the CODEC “H”: muting on
99 CO-PD O
System reset signal output to the CODEC “L”: reset
100 CO-CS O
Chip select signal output to the CODEC “L” active