Diagrams; Ic Pin Description - Sony CDX-CA730X Service Manual

3-1. IC PIN DESCRIPTION

• IC501 MN101C49KCY2 (SYSTEM CONTROL)
Pin No. Pin Name
1 VREF–
2 VSM
3 NIL
4 KEYIN1
5 KEYIN0
6 RC IN0
7 QUALITY
8 NIL/MPTH
9 DSTSEL/FUNCSEL
10 VREF
11 VDD
12 OSCOUT
13 OSCIN
14 VSS
15 XIN
16 XOUT
17 MMOD
18 LCDSO
19 LCDCE
20 LCDCKO
21 CD TSO
22 CD TSI
23 CD TCKO
24 SYSRST
25 BUS ON
26 KEYACK
27 NIL/DAVN
28 BU IN
29 SIRCS
30 CD SELFSW
31 CD PACK
32 VDD2
33 RESET
34 NOSE SW
35 BEEP
36 NCO
37 TESTIN
38 ACCIN
39 NCO (VCC)
40 TELATT
41 NCO (VCC)
42 UNISO
43 UNISI
44 UNICKO
45 I2C SIO
46 NCO
47 I2C CKO
48 NCO
SECTION 3

DIAGRAMS

I/O
— Ground for A/D converter power supply
I S-meter voltage detection signal input from tuner unit (TU10)
I Connect to ground.
I Key signal input
I Key signal input
I Rotary commander key signal input from remote in jack (J561)
I Noise detection signal input Connect to ground in this set.
I Connect to ground in this set. Multi path detection signal input
I Destination set up detection signal input (S553)
— A/D converter power supply
— Power supply (+5 V) input pin
O High speed clock signal output (18.432 MHz)
I High speed clock signal input (18.432 MHz)
— Ground for power supply
I Low speed clock signal input (32.768 kHz)
O Low speed clock signal output (32.768 kHz)
Memory mode select signal input (Input to "Low" (single chip mode).)
I
(Connect to ground.)
O LCD serial data signal output to LCD driver (IC901)
O LCD chip enable signal output to LCD driver (IC901)
O LCD serial clock signal output to LCD driver (IC901)
O CD servo IC serial data signal output
I CD servo IC serial data signal input
O CD servo IC serial clock signal output
O System reset signal output to bus interface (IC581)
O Bus on signal output to bus interface (IC581)
I Key acknowledge detection signal input
I Connect to ground in this set. RDS data block synchronization detection signal input
I Back up power supply detection signal input
I Remote signal input from remote control receiver (IC971)
I CD mechanism self load position detection switch signal input from self switch (SW2)
I CD text pack sync signal input from CD servo (IC1)
— Power supply (+5 V) pin
I microcomputer reset signal input from reset IC (IC551) "L": reset
I Front panel attachment detection signal input from nose detect switch (S552) "L": ON
O Beep signal output to power amp (IC751)
O Not used. (Open)
I Test mode detection signal input
I Accessory power supply detection signal input
O Not used. (Open)
I Telephone ATT detection signal input
I Connect to power supply.
O Sony-Bus serial data signal output to bus interface (IC581)
I Sony-Bus serial data signal input from bus interface (IC581)
O Sony-Bus serial clock signal output to bus interface (IC581)
I/O I2C bus serial data signal input/output
O Not used. (Open)
O I2C bus serial clock signal output
O Not used. (Open)
Pin Description
CDX-CA730X
Ver 1.1
13