Sony CFD-E90L - Page 40

39
CFD-E90L
MAIN BOARD IC801 µPD789478GC-A04-8BT (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Description
1, 2
NC — Not used
3 to 5 VLC2 to VLC0 — Terminal for doubler circuit capacitor connection to develop liquid crystal display drive voltage
6 to 9 COM0 to COM3 O Common drive signal output to the liquid crystal display
10 to 28 SEG0 to SEG18 O Segment drive signal output to the liquid crystal display
29 REC I
Recording/playback detection signal input terminal
“L”: playback mode, “H”: recording mode
30
BL-RED
O LCD back light (red) on/off control signal output terminal “H”: Red LED on Not used
31
BL-ORG
O LCD back light (orange) on/off control signal output terminal “H”: Orange LED on Not used
32
BL-GRN
O LCD back light (green) on/off control signal output terminal “H”: Green LED on Not used
33
BL-BLUE
O LCD back light (blue) on/off control signal output terminal “H”: Blue LED on Not used
34
LINE O
Line function control signal output terminal “H”: line on
35
CD O
CD function control signal output terminal “H”: CD on
36
TAPE O
Tape function control signal output terminal “H”: tape on
37 ISS2 O ISS 2 on/off control signal output terminal “H”: ISS 2 on
38 AVDD — Power supply terminal (+3.3V)
39 AC-CHK I AC voltage detection signal input terminal “L”: AC detected
40
CD DOOR I
CD lid open/close detection switch input terminal “L”: CD lid is closed, “H”: CD lid is opened
41
6V-CHK I
Power supply voltage (+6V) monitor input terminal
42
3V-CHK I
Power supply voltage (+3V) monitor input terminal
43
9V-CHK I
Power supply voltage (+9V) monitor input terminal Not used
44, 45
KEY2, KEY1 I
Front panel key input terminal (A/D input)
46 MODE CHK
I Model destination setting terminal
47
AGND — Ground terminal
48 RMC I
Remote control signal input from the remote control receiver
49
TC-PLAY I Tape play detection switch input terminal “L”: tape play mode
50
WP/INI I/O
Interrupt status input terminal
Output terminal for wake up/Initial reset signal reading
51 JOG-A I
Jog dial pulse input from the encoder
52
C-WRQ I Interruption detection signal input from the digital signal processor
53
C-DOUT I Serial data input from the digital signal processor
54
C-DIN O Serial data output to the digital signal processor
55
C-CLK O Serial data transfer clock signal output to the digital signal processor
56
R-COUNT I PLL serial count data input from the FM/AM PLL
57
R-DATA O PLL serial data output to the FM/AM PLL
58
R-CLK O PLL serial data transfer clock signal output to the FM/AM PLL
59
R-LAT O PLL chip enable signal output to the FM/AM PLL
60
R-MUTE O Tuner muting on/off control signal output to the FM/AM PLL “H”: muting on
61
C-DRF I Focus on/off detection signal input from the digital signal processor
62
C-CE O Chip enable signal output to the digital signal processor
63
C-FSEQ I Synchronizing signal detection signal input from the digital signal processor
64
C-XRT O System reset signal output to the digital signal processor “L”: reset
65 P-CON O
Power on/off control signal output terminal “L”: standby mode, “H”: power on
66
A-MUTE O Audio muting on/off control signal output terminal “H”: muting on
67 JOG-B I
Jog dial pulse input from the encoder
68
M-BASS O Megabass on/off control signal output terminal “L”: megabass on
69
IC0 I Not used
• IC Pin Function Description