Sony CDX-C90R Service Manual page 8

Pin No. Pin Name
54 VCC
55 RAMBU
56 TESTIN
57 AD ON
58, 59 RE IN0, 1
60 BOOT
61 DIMMER
62 TIR IND
63 GND
64 SYSRST
65, 66 NCO
67 EEDATA
68 EECLK
69 NCO
70 RDSSI
71 RDSCKO
72 DAVN
73 X0A
74 X0B
75 RC IN1
76 BU IN
77 KEY ACK
78 ILLIN
79 TEL ATT
80 NCO
81 ACC IN
82 EMPH I
83 FP CLOSE
84 FP OPEN
85 BOOT DP
86 HSTX
87 MD2
88, 89 MD0, 1
90 RESET
91 VSS
92 X0
93 X1
94 VCC
95 TIMPOL
96 PW ON
97 ILL ON
98 DIRECT
99 ATT
100 ANTREM
101 VOLCE0
102 VOLCE1
103 VOLCE2
104 VOLCKO
105 VOLSO
106 ENC+
107 ENC–
108 FM ON
109 AM ON
I/O
— Power supply pin (+5 V)
I RAM reset detection input
I Test mode setting detection input
O Power control output of A/D conversion.
I Rotary encoder input 0, 1
I Compulsory boot mode input
O Dimmer control output
O TIR indicator control output
— GND
O System reset output
— Not used.
I/O EEPROM serial data input/output
O EEPROM serial clock output
— Not used.
I RDS serial clock input
I RDS serial data input
I RDS IC data taking in detection input
— Low speed oscillation input (32.768 kHz)
— Low speed oscillation input (32.768 kHz)
I Rotary commander input
I Back-up power detection input
I Key input acknowledge
I Illumination line detection input
I Telephone mute detection input
— Not used.
I Accessory power detection input
I Emphasis input
I Front panel close detection input
O Front panel open control output
O Display controller boot mode control output
— Connect to power supply pin.
— Connect to GND.
— Connect to power supply pin.
I Microcomputer reset input
— GND
— High speed oscillation input (3.68 MHz)
— High speed oscillation input (3.68 MHz)
— Power supply pin (+5 V)
O Time poling setting (Fixed at "H" in this set.)
O System power control output
O Illumination power control output
O Direct volume control output
O System mute control output
O Antenna remote control output
O Input selector/tone/sub volume serial chip enable output
O Electric volume serial chip enable output (L-CH)
O Electric volume serial chip enable output (R-CH)
O Volume serial clock output
O Volume serial data output
I Rotary commander and encoder input (+)
I Rotary commander and encoder input (–)
O FM ON control output
O AM ON control output
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Pin Description