Sony CDX-C6850 Service Manual page 21

Pin No. Pin Name
56 AMP ON
57 TXT ON
58 VOL ATT
59 NIL
60 ATT
61 RC IN1
62 TU ATT
63 VSS
64 NIL
65 SSTOP
66 TEST
67 DAVN
68 FM ON/AM ON
69 TU ON
70 SDA
71 SCL
72 NOSE2
73 X1A
74 X0A
75 SCOR
76 BU IN
77 DQSY
78 CD SENS
79 KEY ACK
80 TEL ATT
81 ST/MONO
82 SEEKOUT
83 SD IN
84 WIDE
85 NARROW
86 HSTX
87 MD2
88, 89 MD1, 0
90 RESET
91 VSS
92 X0
93 X1
94 VCC
95 COM8V ON
96 NIL
97 AREA1
98 AREA2
99 AREA3
100 BAND
101 ACC IN
102, 103 PH3, 2
104 LCD CE
105 FLS W
106, 107 RE IN0, 1
108 ILL ON
109 PW ON
110 NIL
111 ANT REM
I/O
O Power amplifier power control output
O Reset output to CD-TEXT decoder IC.
O Electric volume mute control output
— Not used. (Open)
O System attenuate control output
I Rotary commander shift key input 1
O Tuner attenuate output (Not used in this set.)
— Ground
— Not used. (Open)
I IF counter result signal detection input of PLL.
I Test mode initial setting detection input
I RDS IC data acquisition detection input (Fixed at "L" in this set.)
O FM ON output
O Tuner power control output
2
I/O I C BUS serial data input/output
2
O I C BUS serial clock output
I Front panel OPEN detection input (Not used in this set.)
O Sub ceramic oscillator output (32 kHz)
I Sub ceramic oscillator input (32 kHz)
I SCOR signal detection input
I Backup power detection input
I CD-TEXT data setting completion signal detection input
I CD SENS signal detection input
I Key input acknowledge
I Telephone attenuate detection input
I/O Tuner stereo signal detection input/forced monaural output
O SEEK output
I Signal detector input
O WIDE/NARROW select output (Not used in this set.)
O WIDE/NARROW select output (Not used in this set.)
Hardware standby input (Connect to pin (º (RESET).)
—
— Operation mode input (Connect to ground in this set.)
— Operation mode input (Connect to VCC in this set.)
I Reset input
— Ground
I Main ceramic oscillator input (4.19 MHz)
O Main ceramic oscillator output (4.19 MHz)
— Power supply pin (+5 V)
O COM 8V control output
— Not used. (Open)
I Destination select input 1 (Fixed at "L" in this set.)
I Destination select input 2 (Fixed at "L" in this set.)
I Destination select input 3 (Fixed at "H" in this set.)
I Not used in this set.
I Accessory power detection input
I Disc insertion detection photo sensor input (Not used in this set.)
O LCD chip enable output
I Flash write input (Fixed at "H" in this set.)
I Rotary encoder input
O Illumination power control output
O System power control output
— Not used. (Open)
O ANT REMOTE power control output
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Pin Description