Ic Pin Descriptions - Sony CDX-MP30 Service Manual

3-12. IC Pin Descriptions

• IC3 HD6432238RWN18TEI (CD Master Control) (SERVO Board)
Pin No. Pin Name
1 TEST
2 DECXRST
3 DECSTBY
4 to 7 NC
8 PH3
9 INSW/PH2
10 LIMIT_SW
11 D_SW
12 CVCC
13 NC
14 VSS
15 NC
16 PH1
17 EJECT
18 LOAD
19 to 26 NC
27 FLAG
28 RFOK
29,30 NC
31 TXD
32 RXD
33 XTALEN
34 TSTB
35 STB
36 A0
37 CD_RST
38 PACK
39 NC
40 SELF_SW
41 NC
42 AVSS
43,44 NC
45,46 NC
47 KEY0
48 KEY1
49 to 52 NC
53 AVREF
54 AVCC
55 MD0
56 MD1
57 X1A
58 X0A
59 RSTX
60 NMI
61 STBY
62 VCC
63 XTAL
64 VSS
65 EXTAL
66 FWE
I/O
I Test mode selection terminal (not used)
O Reset signal output to the DSP IC(IC5) "L": reset
O Standby mode control signal output to the DSP IC(IC5) "H": standby
O Not used
I CD PH3 photo sensor detection signal input (not used)
I CD mechanism disc in switch detection signal input
I CD mechanism in-limit switch detection signal input
I CD mechanism down switch detection signal input
— System power supply (3.3V)
O Not used
— Ground
O Not used
I CD PH1 photo sensor detection signal input (not used)
O CD mechanism loading motor control signal output (eject operation)
O CD mechanism loading motor control signal output (load operation)
O Not used
I Correction unable detection signal input
I RFOK signal input from the servo IC (IC1)
O Not used
O UART TXD PC connection output terminal
I UART RXD PC connection input terminal
O Crystal oscillation control signal output to the servo IC (IC1)
O CD text parameter strobe signal output to the servo IC (IC1)
O Data strobe signal output to the servo IC (IC1)
O Command/parameter identification signal output to the servo IC (IC1) "L": command, "H": parameter
O Reset signal output to the servo IC (IC1)
I CD text pack sync signal input from the servo IC (IC1)
O Not used
I CD mechanism self load position detection switch signal input
O Not used
— Ground for A/D converter
O Not used
I Not used
I Key switch signal input in the test mode
I Mode switch signal input in the test mode
I Not used
— Reference voltage for A/D converter
— Power supply for A/D converter
— CPU operation mode setting terminal
— CPU operation mode setting terminal
— Sub clock oscillator terminal (not used,open)
— Sub clock oscillator terminal (not used,open)
I Microcomputer reset signal input
— Not used (fixed at "H")
— Not used (fixed at "H")
— Power supply
— Main clock oscillator terminal
— Ground
— Main clock oscillator terminal
I Flash write enable signal input
Description
CDX-MP30
29