Diagrams; Ic Pin Descriptions - Sony CDX-CA650 Service Manual

3-1. IC PIN DESCRIPTION
• IC501 MN101C49KTH (SYSTEM CONTROL)
Pin No. Pin Name
1 VREF–
2 VSM
3 NIL (FMAGC)
4, 5 KEYIN1, 0
6 RCIN0
7 QUALITY
8 MPTH
9 NIL (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 TSO
22 CD TSI
23 CD TCKO
24 SYSRST
25 BUSON
26 KEYACK
27 DAVN
28 BUIN
29 SIRCS
30 CD SELFSW
31 CD PACK
32 VDD2
33 RESET
34 NOSESW
35 BEEP
36 NCO
37 TESTIN
38 ACCIN
39 NCO (VCC)
40 TELATT
41 NCO (VCC)
42 UNISO
43 UNISI
44 UNICKO
45 12C SIO
46 NCO
47 12C CKO
48 NCO
49 TUNON
50 PW ON
51 TSTB
52 RFOK
SECTION 3

DIAGRAMS

I/O
— A/D converter power supply (–) pin
I S-meter voltage detection input
I Not used. (Connect to VSS in this set)
I Key input 1, 0
I Rotary commander key input
I Noise detection input
I Multipath detection input
I Not used. (Fixed at L in this set)
— A/D converter power supply (+) pin (+5 V)
— Power supply pin (+5 V)
O Main clock output (18.43 MHz)
I Main clock input (18.43 MHz)
— Ground
I Sub clock input (32.768 kHz)
O Sub clock output (32.768 kHz)
I Memory mode select input (Fixed at L in this set)
O Serial data output for LCD driver IC.
O Chip enable output for LCD driver IC.
O Serial clock output for LCD driver IC.
O Serial data output for CD servo IC.
I Serial data input from CD servo IC.
O Serial clock output for CD servo IC.
O System reset output
O BUS ON output
I Key acknowledge detection input
I RDS data block synchronization detection input
I Backup power supply input
I SIRCS input
I CD mechanism deck Self switch detection input
I CD text pack synchronization signal input from CD servo IC.
— Power supply pin (+5 V)
I Microcomputer reset input
I Front panel attachment detection input
O Beep output
O Not used. (Open)
I Test mode detection input
I Accessory power supply detection input
O Not used. (Open)
I Telephone attenuator detection input
I Not used. (Fixed at H in this set)
O SONY-BUS data output
I SONY-BUS data input
O SONY-BUS clock output
I/O I2C BUS serial data input/output
O Not used. (Open)
O I2C BUS serial clock output
O Not used. (Open)
O Tuner power supply control output
O System power supply control output
O CD text parameter strobe output for CD servo IC.
I RFOK signal input from CD servo IC.
CDX-CA650/CA650V/CA650X
Pin Description
13