Sony CDX-CA850X - Page 19

19
CDX-CA850/CA850X/CA860X
• IC501 MB90574BPMT-G-323-BND (MAIN SYSTEM CONTROL) (CDX-CA850X/CA860X) (MAIN BOARD)
• IC501 MB90574BPMT-G-324-BND (MAIN SYSTEM CONTROL) (CDX-CA850) (MAIN BOARD)
Pin No. Pin Name I/O Pin Description
1 – 4 NCO O Not used. (Open)
5 ATT O System mute control signal output
6, 7 NCO O Not used. (Open)
8 VCC — Power supply pin (+5 V)
9 AMP ATT O Amp mute signal output
10 E2PSIO I/O EEPROM data signal input/output
11 E2PCKO O EEPROM clock signal output
12 DOOR SW/FLS SI I Door switch signal input (L: close) Flash write data signal input
13 FLS SO O Flash write data signal output
14 BUS ON O BUS ON control signal output
15 BEEP O Beep signal output
16 NS MASK O Tuner mute signal output
17 UNISI I SONY BUS data signal input
18 UNISO O SONY BUS data signal output
19 UNICKO O SONY BUS clock signal output
20 IFWIDTH O Not used. (Open)
21 SWSHIFT O Not used. (Open)
22 SYSRST O System reset signal output
23 (NCO) O Not used. (Open)
24 SIRCS I Remote control data signal input
25 – 29 NCO O Not used. (open)
30 AMPON O Amp on signal output (L: OFF/H: ON)
31 VOLATT O Electronic volume mute signal output (L: Mute on)
32 NCO O Not used. (Open)
33 VSS — Ground pin
34 C — Power stabilized capacitance pin Not used. (open)
35 – 37 NCO O Not used. (Open)
38 DVCC — D/A converter VREF input
39 DVSS — D/A converter GND pin
40, 41 (NCO) O Not used. (Open)
42 AVCC — Analog power supply pin (+5 V)
43 AVRH — A/D converter VREF+ input
44 AVRL — A/D converter VREF– input
45 AVSS — Analog ground pin
46 KEYIN0 I Key signal input 0
47 KEYIN1 I Key signal input 1
48 RCIN0 I Rotary commander signal input
49 NCO O Not used. (Open)
50 QUALITY O Quality signal output
51 FM AGC O Not used in this set. (Open)
52 MPTH O MPTH signal output to RDS decoder
53 VSM I S-meter signal input
54 VCC — Power supply pin (+5 V)
55, 56 NCO O Not used. (Open)
57 BOOT O Display microcomputer write control signal output
58 DOORIND O Front panel indicator signal output
59 – 62 NIL I Not used. (Connect to ground in this set.)
63 VSS — Ground pin
64 NIL I Not used. (Connect to ground in this set.)
65 FSW IN O Not used. (Open)
66 – 68 NCO O Not used. (Open)