Diagrams; Ic Pin Description - Sony CDX-L450V Service Manual

4-1. IC PIN DESCRIPTION

• IC801 µPD780024AGK-B26-9ET (SYSTEM CONTROLLER)
Pin No. Pin Name
1 D SW
2 IN SW
3 PH3
4 LM LD
5 LM EJ
6 A ATT
7 ATT
8 BEEP
9 VSSO
10 VDDO
11 VOL CLK
12 VOL DO
13 VOL CE
14 AM ON
15 FM ON
16 NOSE
17 PLL DI
18 LCD DO
19 LCD CE
20 LCD CLK
21 PLL CLK
22 PLL DO
23 PLL CE
24 VDD1
25 AVSS
26 ST IND
27 FUN SEL
28 S METER
29, 30 KEY0, 1
31 TEL ATT
32 DST SEL
33 TEST
34 AVREF
35 AVDD
36 RESET
37 XT2
38 XT1
39 IC
40 X2
41 X1
42 VSS1
43 KEY ACK
44 SIRCS
45 SELF SW
46 BU IN
47 AD ON
48 ILL ON
49 AMP ON
50 CDM ON
51 XCD ON
52 TU ON
SECTION 4

DIAGRAMS

I/O
I Down switch detection input
I Disc in switch detection input
I PH3 detection input (Not used in this set)
O Loading motor drive output (Loading)
O Loading motor drive output (Eject)
O Power amplifier mute control output
O Line out mute control output
O BEEP output
— Ground
— Power supply pin (+5 V)
O Electric volume clock output
O Electric volume data out output
O Electric volume chip enable output
O Tuner AM power supply control output
O Tuner FM power supply control output
I Front panel attachment detection input
I PLL IC data input
O LCD data output
O LCD chip enable output
O LCD clock output
O PLL IC clock output
O PLL IC data output
O PLL IC chip enable output
— Power supply pin (+5 V)
— Ground
I FM STEREO detection input
I Function select input
I S meter signal input
I A/D key input 0, 1
I Attenuator signal input
I Destination select input
I Force test mode input
— A/D converter power supply pin (+5 V)
— A/D converter power supply pin (+5 V)
I Reset input
O Sub clock output (32.768 kHz)
I Sub clock input (32.768 kHz)
— Connect to Ground in this set.
O Master clock output (8.38 MHz)
I Master clock input (8.38 MHz)
— Ground
I Key acknowledge detection input
I SIRCS input
I Self switch detection input
I Backup power supply detection input
O Key power supply control output
O Illumination power supply control output
O Amplifier remote power supply control output
O CD mechanism deck power supply control output
O CD DSP IC 16 MHz X'tal ON/OFF control output
O Tuner power supply control output
Pin Description
CDX-L450V
17