Diagrams; Ic Pin Descriptions - Sony CDX-MP40 Service Manual

3-1. IC PIN DESCRIPTIONS

• IC3 HD6432238RWN35TEI (CD MASTER CONTROL) (SERVO BOARD)
Pin No. Pin Name
1 TEST
2 DECXRST
3 DECSTBY
4 – 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 – 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 – 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 XTEAL
66 FWE
SECTION 3

DIAGRAMS

I/O
I Test mode selection pin Not used. (Open)
O Reset signal output to the DSP IC "L": reset
O Standby mode control signal output to the DSP IC "H": standby
O Not used. (Open)
I CD PH3 photo sensor detection signal input Not used. (Open)
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 pin (+3.3 V)
O Not used. (Open)
— Ground pin
O Not used. (Open)
I CD PH1 photo sensor detection signal input Not used. (Open)
O CD mechanism loading motor control signal output (eject operation)
O CD mechanism loading motor control signal output (load operation)
O Not used. (Open)
I Correction unable detection signal input
I RFOK signal input from the servo IC
O Not used. (Open)
O UART TXD PC connection output Not used. (Open)
I UART RXD PC connection input Not used. (Open)
O Crystal oscillation control signal output to the servo IC
O CD text parameter strobe signal output to the servo IC
O Data strobe signal output to the servo IC
Command/parameter identification signal output to the servo IC
O
"L": command, "H": parameter
O Reset signal output to the servo IC
I CD text pack sync signal input from the servo IC
O Not used. (Open)
I CD mechanism self load position detection switch signal input
O Not used. (Open)
— Ground for A/D converter
O Not used. (Open)
I Not used. (Open)
I Key switch signal input in the test mode Not used. (Open)
I Mode switch signal input in the test mode Not used. (Open)
I Not used. (Open)
— Reference voltage for A/D converter
— Power supply for A/D converter
— CPU operation mode setting pin Connecting to +3.3 V in this set.
— CPU operation mode setting pin Connecting to +3.3 V in this set.
— 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 pin (+3.3 V)
— Main clock oscillator pin (12.288 MHz)
— Ground pin
— Main clock oscillator pin (12.288 MHz)
I Flash write enable signal input
Pin Description
CDX-MP40
15