Sony HCD-GTX888 Service Manual page 75

Pin No. Pin Name
SW-SPK-RELAY
54
55 PROTECTOR
56 FAN HI SPEED
57 R2A15216FP - CLK
58 R2A15216FP - DATA
59 TUNED
60 TC-RELAY
61 REC MUTE
62 VCC
63 REC BIAS
64 VSS
65 METER POSITION SW
66 MIC DET / HP DET
67 ST-CE
68 MC-DOUT (ST-D IN)
69 ST-CLK
70 MC-DIN (ST-D OUT)
71 NO-USE
72 METER LEVEL
73 POWER & DISPLAY-KEY
74 RDS-DATA
75 RDS-CLK
76 EFFECTOR-S0
77 EFFECTOR-S1
78 EFFECTOR-S2
79 CD BUS3
80 CD BUS2
81 CD BUS1
82 CD BUS0
83 B-HALF
84 ADKEY 0
85 ADKEY 1
86 ADKEY 2
87 MASTER VOL
88 OP DIAL
89 VACS
90 OVER VOLTAGE DET
91 MODEL-IN
92 DEST-IN
93 THERMA VACS
94 SW LEVEL IN
95 EEP-SCL
96 Avss
97 EEP_SDA
98 VREF
99 AVCC
100 SW ON LED
I/O
O Relay drive signal output for the passive sub woofer "H":relay on
I Speaker protect detection signal input from speaker protect circuit "L":protector on
O
Fan high speed control signal for Themal VACS, "L": Fan high speed on.
O
Serial data transfer clock signal output to audio signal IC, R2A15216FP
O
Serial data output to audio signal IC, R2A15216FP
I
"TUNED" input signal from Tuner pack.
O
Recording/playback selection signal output "H":recording "L":playback
O
Recording muting on/off control signal output "L":muting on
—
Power supply terminal (+3.3V)
O
Recording bias on/off control signal output "H":bias on
—
Ground terminal
I Meter position switch (Initial & End Position) for calibration purpose.
I Heahphone in and Mic in detect pin (A/D input).
O PLL chip enable signal output to the tuner unit
I PLL serial data input to the tuner unit
O PLL serial data transfer clock signal output to the tuner unit
O PLL serial data output from the tuner unit
I Unused port (Pull to GND)
I Audio signal level for Meter level detect (A/D input).
I POWER key and DISPLAY key press detection signal (Interrupt input)
I RDS data signal from Tuner pack.
I RDS clock signal from Tuner pack.
O
Effector circuitry delay time selection bit 0 output signal
O
Effector circuitry delay time selection bit 1 output signal
O
Effector circuitry delay time selection bit 2 output signal
I/O
Data bus line for ZIPANG (CD) communcation with master control.
I/O Data bus line for ZIPANG (CD) communcation with master control.
I/O Data bus line for ZIPANG (CD) communcation with master control.
I/O Data bus line for ZIPANG (CD) communcation with master control.
Deck B cassette detection, forward side recording tab detection and reverse side recording tab
I
detection signal input terminal (A/D input)
I Key input terminal for AD key line 0.
I Key input terminal for AD key line 1.
I Key input terminal for AD key line 2.
I Jog dial pulse input from the VOLUME encoder
I Jog dial pulse input from OPERATION DIAL encoder
I Spectrum analyzer drive signal input from Audio IC signal (A/D input)
I Over-voltage protection detection input terminal "L": over-voltage detected
I Model setting terminal (A/D input)
I Destination setting terminal (A/D input)
I Temperature detection signal input from thermistor (A/D input)
I Subwoofer volume level detection from subwoofer volume jog (A/D input)
I/O External EEPROM memory backup (Serial Clock line)
I Ground terminal (for A/D conversion)
I/O External EEPROM memory backup (Serial Data line)
I A/D Converter reference voltage input terminal (+3.3V)
— Power supply terminal (+3.3V) (for A/D conversion)
O LED drive signal output of SUB WOOFER ON indicator on sub woofer "H":LED ON
HCD-GTX777/GTX787/GTX888
Pin Description
75