– 46 –
Pin No. Pin Name I/O Pin Description
56 AMP ON O Power amplifier power control output
57 TXT ON O Reset output to CD-TEXT decoder IC. (Not used in this set.)
58 VOL ATT O Electric volume mute control output
59 NIL — Not used. (Open)
60 ATT O System attenuate control output
61 RC IN1 I Rotary commander shift key input 1
62 TU ATT O Tuner attenuate output (Not used in this set.)
63 VSS — Ground
64 NIL — Not used. (Open)
65 SSTOP I IF counter result signal detection input of PLL.
66 TEST I Test mode initial setting detection input
67 DAVN I RDS IC data acquisition detection input (Fixed at “L” in this set.)
68 FM ON/AM ON O FM ON output
69 TU ON O Tuner power control output
70 SDA I/O I2C BUS serial data input/output
71 SCL O I2C BUS serial clock output
72 NOSE2 I Front panel OPEN detection input (Not used in this set.)
73 X1A O Sub ceramic oscillator output (32 kHz)
74 X0A I Sub ceramic oscillator input (32 kHz)
75 SCOR I SCOR signal detection input
76 BU IN I Backup power detection input
77 DQSY I CD-TEXT data setting completion signal detection input
78 CD SENS I CD SENS signal detection input
79 KEY ACK I Key input acknowledge
80 TEL ATT I Telephone attenuate detection input
81 ST/MONO I/O Tuner stereo signal detection input/forced monaural output
82 SEEKOUT O SEEK output
83 SD IN I Signal detector input
84 WIDE O WIDE/NARROW select output (Not used in this set.)
85 NARROW O WIDE/NARROW select output (Not used in this set.)
86 HSTX — Hardware standby input (Connect to pin (º (RESET).)
87 MD2 — Operation mode input (Connect to ground in this set.)
88, 89 MD1, 0 — Operation mode input (Connect to VCC in this set.)
90 RESET I Reset input
91 VSS — Ground
92 X0 I Main ceramic oscillator input (4.19 MHz)
93 X1 O Main ceramic oscillator output (4.19 MHz)
94 VCC — Power supply pin (+5 V)
95 COM8V ON O COM 8V control output
96 NIL — Not used. (Open)
97 AREA1 I Destination select input 1 (Fixed at “L” (CDX-C4750) or “H” (CDX-C6600) in
this set.)
98 AREA2 I Destination select input 2 (Fixed at “L” (CDX-C6600) or “H” (CDX-C4750) in
this set.)
99 AREA3 I Destination select input 3 (Fixed at “L” in this set.)
100 BAND I Frequency select input (CDX-C6600)
101 ACC IN I Accessory power detection input
102, 103 PH3, 2 I Disc insertion detection photo sensor input (Not used in this set.)
104 LCD CE O LCD chip enable output
105 FLS W I Flash write input (Fixed at “H” in this set.)
106, 107 RE IN0, 1 I Rotary encoder input
108 ILL ON O Illumination power control output
109 PW ON O System power control output
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