49
HCD-DX2D
• IC Pin Function Description
MAIN BOARD IC501 uPD780078 (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Description
1 MUTE1 O Muting signal output to the VIDEO AMP (only for AEP, UK, RU models)
2 MUTE2 O Muting signal output to the VIDEO AMP (only for AEP, UK, RU models)
3RPHD O REC/PLAY control signal output
4 BIAS O BIAS ON/OFF control signal output
5 TSOL O Tape solenoid control signal output
6 TMOT O Tape motor control signal output
7 TCNT O Tape control signal output
8 VIDEO SW I RGB/COMPONENT select SW signal input (only for AEP, UK, RU models)
9 GND — Ground terminal
10 VDD — Power supply terminal (+5V)
11 STE I Stereo signal input
12 TUCE O Chip enable signal output to the tuner
13 VIDS O INT/PRO signal output
14 TOP I DVD/CD tray open SW signal input
15 VEDA O Chip select output to the FL driver
16 VFCK O Clock output to the FL driver
17 VFSTB O Data output to the FL driver
18 TUDI O Data output to the tuner
19 TUDO I Data input from the tuner
20 TUCK O Clock output to the tuner
21 RDDA O Strobe signal output to the tuner
22 VUP I Volume up input (VR601)
23 FPON O FL power supply control signal output
24 VDD1 — Power supply terminal (+5V)
25 GND — Ground terminal
26 KEY1 I Function key input
27 KEY2 I Function key input
28 KEY3 I Function key input
29 SFTY I AC cut detect signal input
30 HDPN I Tape SW (PACK, HDPLY) signal input
31 REPT I Tape SW (RECF, RECR) signal input
32 VER I Destination version setting
33 VDWN I Volume down input (VR601)
34 AVR I Reference voltage terminal
35 TCL I DVD/CD tray close SW signal input
36 RST I System reset signal input
37 XT2 I Subclock input (36.768KHz)
38 XT1 O Subclock output (36.768KHz)
39 IC — Not used
40 X2 I Main system clock input (8.38MHz)
41 X1 O Main system clock output (8.38MHz)
42 GND — Ground terminal
43 U-SENS O USB SENS signal output (not used)
44 INH I Power down detect signal input
45 REM I SIRES signal input from the remote control receiver
46 RDCK O RDCK signal output to the tuner
47 MRST O MPEG reset signal output
Ver. 1.1
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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