LG RCT689H, Service Manual

Page: 152 / 165

5-33
• Pin Assignment
Pin no. Pin Name Type Function
1 NC - -
2 PO3 O General CMOS output pin
3 PO2 O Head Amp/OEIC gain change signal output pin 3.
4 PO1 O Head Amp/OEIC gain change signal output pin 2.
5 PO0 O Head Amp/OEIC gain change signal output pin 1.
6 VCC53 PS Power supply pin for CMOS I/F & LOGIC.
7 PIO0 I/O General CMOS Input/Output pin 0.
8 PIO1 I/O General CMOS Input/Output pin 1.
9 PIO2 I/O General CMOS Input/Output pin 2.
10 PIO3 I/O General CMOS Input/Output pin 3.
11 PIO4 I/O General CMOS Input/Output pin 4.
12 CXDPH1 I PH capacitor commection pin 1 for LPOS.
13 CXDPH2 I PH capacitor commection pin 2 for LPOS
14 GND6 PS GND pin for BG.
15 STMDN I PD input pin for STM.
16 STMD I PD input pin for STM.
17 VREF08 O 0.8V reference voltage output pin (APC).
18 SEO1 O Output pin 1 after selection of each error signal.
19 SEO2 O Output pin 2 after selection of each error signal.
20 MOUT0 O Analog monitor 0.
21 MOUT1 I/O Analog monitor 1.
22 MOUT2 I/O Analog monitor 2.
23 VCC8 PS Power supply pin for LPC (5.0V)
24 IREAD O DAC electric current output pin for READ.
25 IWRT1 O DAC electric current output pin 1 for WRITE.
26 IWRT2 O DAC electric current output pin 2 for WRITE.
27 IWRT3 O DAC electric current output pin 3 for WRITE.
28 GND7 PS GND pin for LPC.
29 CLPCLPF I Capacitor connection pin for LPC/DAC LPF.
30 RVREF I Capacitor connection pin for reference voltage setting.
31 VCC7 PS Power supply pin for LPC (3.3V).
32 STMOUT O Encoder circuit comparator output.
33 TC O Track cross signal output.
34 VCC51 PS Power supply pin for CMOS I/F & LOGIC(3.3V)
35 OFTR O OFTR signal output.
36 BDO O BDO output.
37 GND5 PS Ground pin for CMOS I/F.
38 WTGT I Write gate signal input pin (pull-down)
39 WIDGT/SH4 I VFO through signal input pin.
ROPC mark detection sampling signal innput pin (pull-down)
40 SH3 I PCA average detection, APC space detection/Playback power detection/
Erase detection sample timing signal input pin(pulldown).