Diagrams; Ic Pin Descriptions - Sony CDX-CA650X Service Manual

3-1. IC PIN DESCRIPTION
• IC801 MN101C49KTG1 (SYSTEM CONTROL)
Pin No. Pin Name
1 VREF–
2 VSM
3 NIL
4 KEYIN1
5 KEYIN0
6 RC IN0
7, 8 NIL
9 DSTSEL
10 VREF+
11 VDD
12 OSCOUT
13 OSCIN
14 VSS
15 XIN
16 XOUT
17 MMOD
18 LCDSO
19 LCDCE
20 LCDCKO
21 CD SO/TSO
22 CD SI/TSI
23 CD CKO/TCKO
24 SYSRST
25 BUS ON
26 KEYACK
27 NIL
28 BU IN
29 SIRCS
30 CD SELFSW
31 CD PACK
32 NIH
33 RESET
34 NOSE SW
35 BEEP
36 NCO
37 TESTIN
38 ACCIN
39 NCO
40 TELATT
41 NIH
42 BUSSO
43 BUSSI
44 BUSCKO
45 I2CSIO
46 NCO
47 I2CCKO
48 NCO
49 TUNON
50 PW ON
SECTION 3

DIAGRAMS

I/O
— Ground for A/D converter power supply
I S-meter voltage detection signal input from tuner unit (TU601)
I Connect to ground.
I Key signal input
I Key signal input
I Rotary commander key signal input from remote in jack (CNP801)
I Not used. (Connect to ground.)
Destination set up detection signal input ("L": CDX-CA650X/CA660X,
I
"H": CDX-CA690X)
— 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 (IC501)
O LCD chip enable signal output to LCD driver (IC501)
O LDC serial clock signal output to LCD driver (IC501)
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 (IC803)
O Bus on signal output to bus interface (IC803)
I Key acknowledge detection signal input
I Not used. (Connect to ground.)
I Back up current detection signal input
I Remote signal input from remote control receiver (IC502)
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)
I Connect to power supply.
I microcomputer reset signal input from reset IC (IC802) "L": reset
I Front panel attachment detection signal input from nose detect switch (S902) "L": ON
O Beep signal output to power amp (IC404)
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 (IC803)
I Sony-Bus serial data signal input from bus interface (IC803)
O Sony-Bus serial clock signal output to bus interface (IC803)
I/O I2C bus serial data signal input/output
O Not used. (Open)
O I2C bus serial clock signal output
O Not used. (Open)
O Tuner power supply control signal output to power supply (IC901)
O System power supply control signal output to power supply (IC901)
CDX-CA650X/CA660X/CA690X
Pin Description
13