Sony CMT-CNEZ3 Service Manual page 80

HCD-NEZ3/NEZ5
Pin No.
Pin Name
46 O-POWER
47
I-SUFFIX
48 I-RE-VOL
49
I-MP3-REQ
50 I-MP3-ACK
51 to 53
MD2 to MD0
54 RESET
55
O-TU-CE
56
O-TU-CLK
57
O-TU-DI
58 VLCD
59 to 62 COM0 to COM3
63, 64
SEG0, SEG1
65 VCC
66
GND
67 to 89
SEG2 to SEG24
90 VCC
91 VSS
92 XI
93 XO
94 to 100 SEG25 to SEG31
28
I/O
O Power relay drive signal output terminal
I Model destination setting terminal
I Dial pulse input of the rotary encoder (for VOLUME control)
I MP3 data request signal input from the CD DSP
I MP3 acknowledge signal input from the CD DSP
-
Not used
Reset signal input from the reset switch "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
O Chip enable signal output to the tuner (FM/AM)
O serial data transfer clock signal output to the tuner (FM/AM)
O Serial data output to the tuner (FM/AM)
-
Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage
O Common drive signal output to the liquid crystal display
O
Segment drive signal output to the liquid crystal display
- Power supply terminal (+3.2V)
- Ground terminal
O
Segment drive signal output to the liquid crystal display
-
Power supply terminal (+3.2V)
- Ground terminal
I
Main system clock input terminal (4.19 MHz)
O
Main system clock output terminal (4.19 MHz)
O
Segment drive signal output to the liquid crystal display
Description
"H": on