Sony CDX-C6850, Service Manual

Page: 20 / 54

– 20 –
4-1. IC PIN DESCRIPTION
• IC801 MB90574PFV-G-179-BND (SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1 LD ON O Laser ON/OFF control output
2 FOK I Focus OK signal detection input
3 XLAT25 O CD signal processing latch output
4 DATA25 O CD signal serial data output
5 XRST O Reset output to CD signal processor IC.
6 GFS I GFS signal detection input
7 NIL — Not used. (Connect to ground in this set.)
8 VCC — Power supply pin (+5 V)
9 – 11 NIL — Not used. (Open)
12 FLS SI/NOSE1 I Front panel attachment detection input
13 LCD SO/FLS SO O LCD serial data output
14 LCD CKO O LCD serial clock output
15 BEEP O BEEP output
16 NIL — Not used. (Open)
17 SQ SI I Sub Q data input
18 NIL — Not used. (Connect to ground in this set.)
19 SQ CKO O Sub Q read clock output
20 UNI SI I BUS system serial interface input
21 UNI SO O BUS system serial interface output
22 UNI CK I/O BUS system serial clock input/output
23 C IN I Track jump No. count input
24 SIRCS I Remote commander input
25 TXT SI I CD-TEXT data input
26 NIL — Not used. (Connect to ground in this set.)
27 TXT CKO O CD-TEXT data read clock output
28 CLOK25 O CD signal processing serial clock output
29 SYSRST O System reset output
30 DEEMPH O De-emphasis output
31 AMP ATT O Power amplifier attenuator control output
32 MD ON O CD mechanism power control output
33 VSS — Ground
34 C — Power stabilization capacitor pin
35 CD ON O CD power control output
36 BUS ON O BUS ON control output
37 AD ON O Power control output of A/D conversion.
38 DVCC — VREF input of D/A converter.
39 DVSS — Ground of D/A converter.
40 NIL — Not used. (Open)
41 ANGLE O LCD view angle alignment output (Not used in this set.)
42 AVCC — Analog power supply pin (+5 V)
43 AVRH — VREF + input of A/D converter.
44 AVRL — VREF – input of A/D converter.
45 AVSS — Analog ground
46 – 48 KEY IN0 – 2 I Key input 0 – 2
49 RC IN0 I Rotary commander input 0
50 QUALITY I Not used in this set.
51 NIL — Not used. (Connect to ground in this set.)
52 MPDH I Tuner multi path input (Not used in this set.)
53 S-METER I S-meter voltage detection input
54 VCC — Power supply pin (+5 V)
55 NS MASK O Not used in this set.
SECTION 4
DIAGRAMS
www. xiaoyu163. com
QQ 376315150
9 9
2
8 9
4 2
9 8
TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3
Q Q
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com