66
HCD-GT22/GT44/GT55
MAIN BOARD IC901 uPD78F1165GF (S)-GAS-AX (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
O-SYS-MUTE
O
Muting on/off control signal output terminal "L": muting on
2
O-SWR
O
Sub woofer speaker on/off relay drive signal output terminal (GT44/GT55)
3
O-FRONT-SP-
RELAY
O
Power on/off control signal output for speaker relays
4
O-CD-POWER
O
Power on/off control signal output for CD block
5
O-POWER-
RELAY
O
Power on/off relay drive signal output terminal "H": power on
6
CD XRST
O
Reset signal output to the CD-MP3 processor "L": reset
7
CD-M-MUTE
O
Muting signal output to the coil/motor driver
8
O-USB-POWER
O
Power on/off control signal output for USB block
9
I-USB-CTS (DI)
I
Clear to send signal input from the USB controller
10
O-USB-RTS (DO)
O
Ready to send signal output to the USB controller
11
O-USB-RESET
O
Reset signal output to the USB controller "L": reset
12
CD-BUCK
O
Serial data transfer clock signal output to the CD-MP3 processor
13
CD-CCE
O
Chip enable signal output to the CD-MP3 processor
14 to 17
CD-BUS3 (I/O) to
CD-BUS0 (I/O)
I/O
Two-way data bus with the CD-MP3 processor
18
MP3 IREQ
I
Request signal input from the CD-MP3 processor
19
CD-SEL1
O
Data selection signal output terminal
20
EVSS1
-
Ground terminal
21
CD-SEL2
O
Data selection signal output terminal
22
O-LM-R
O
Loading motor control signal output terminal (reverse direction)
23
O-LM-F
O
Loading motor control signal output terminal (forward direction)
24
O-TM-R
O
Table motor control signal output terminal (reverse direction)
25
O-TM-F
O
Table motor control signal output terminal (forward direction)
26
I-CD-SENS
I
Disc table address sensor input terminal
27
I-OPEN-SW
I
Disc table open/close detection switch input terminal "L": open, "H": close
28
O-LC72121-CE
O
Chip enable signal output to the tuner (FM/AM)
29
I-SBSY
I
Subcode block sync signal input from the CD-MP3 processor
30
EVDD1
-
Power supply terminal (+3.3V)
31
I-LV23004T-DI
I
Serial data input from the tuner (FM/AM)
32
O-LV23004T
-CLK
O
Serial data transfer clock signal output to the tuner (FM/AM)
33
O-LV23004T-DO
O
Serial data output to the tuner (FM/AM)
34
I-TUNED
I
Tuning detection signal input from the tuner
35
I-AC-CUT
I
AC power off detection signal input terminal
36
O-STK-MUTE
O
Standby signal output to the power amplifier (for front speaker)
37
O-USB-LED
O
LED drive signal output terminal for REC (USB) indicator "H": LED on
38
O-G-LED
O
LED drive signal output terminal for GUITAR indicator "H": LED on
39
O-V-LED
O
LED drive signal output terminal for VOCAL indicator "H": LED on
40
O-B-LED
O
LED drive signal output terminal for BASE indicator "H": LED on
41
O-F-DATA
O
Serial data output to the electrical volume
42
I-USB-RXD (SI)
I
Serial data input from the USB controller
43
O-USB-
TXD (SO)
O
Serial data output to the USB controller
44
O-P-DATA
O
Serial data output to the parametric equalizer (GT55)
Содержание HCD-GT22
Страница 22: ...22 HCD GT22 GT44 GT55 MEMO ...
Страница 97: ...97 HCD GT22 GT44 GT55 MEMO ...
