Diagrams; Ic Pin Description - Sony CDX-L410X Service Manual

CDX-L410X

3-1. IC PIN DESCRIPTION

• IC801 µPD780076YGK-R24 (SYSTEM CONTROL) (MAIN Board)
Pin No. Pin Name
1 D SW
2 LM LD
3 LM EJ
4 ATT
5 A ATT
6 PLL DI
7 VOL ATT
8 DOOR SW/IND
9 VSS0
10 VDD0
11 PLL CE
12 BEEP
13 SDAO
14 SCLO
15 LCD CE
16 LCD DO
17 LCD CLK
18 BUS SI
19 BUS SO
20 BUS CLK
21 BUS CLK GEN
22 AM ON
23 FM ON
24 VDD1
25 AVSS
26 ST IND
27 SHIFT/PH1
28 S METER
29, 30 KEY0, KEY1
31 R COM
32 DST SEL
33 TEST
34 AVREF
35 AD ON
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 NOSE
12
SECTION 3

DIAGRAMS

I/O
I Down switch detection signal input "L": Down switch on
O Loading motor drive control signal output (Loading direction)
O Loading motor drive control signal output (Eject direction)
O Mute control signal output of audio signal line "H": mute on
O Mute control signal output to power amp IC (IC101) "L": amp mute on
I Serial data signal input to PLL IC (IC601)
O Mute control signal output to Electric volume IC (IC401)
I Door switch signal input Case of flipdown, sense to open condition of door "H": open
— Ground pin
— Power supply pin
O Chip enable signal output to PLL IC (IC601)
O Beep signal output of key beep, caution alarm to power amp IC (IC101)
O IIC data line signal output (control to electric volume IC (IC401))
O IIC clock line signal output (control to electric volume IC (IC401))
O Chip enable control signal output to LCD driver IC (IC901)
O Serial data signal output to LCD driver IC (IC901)
O Serial clock signal output to LCD driver IC (IC901)
I SONY bus data signal input
O SONY bus data signal output
I SONY bus clock signal input
O SONY bus clock signal output
AM select signal output
O
FM circuit power supply control output of tuner unit (TU601) "H": FM on
FM select signal output
O
FM circuit power supply control output of tuner unit (TU601) "H": FM on
— Power supply pin
— Ground pin
Stereo signal input/monaural control signal output
I/O At forced monaural on: "L" output
At forced monaural off: input mode, stereo on for "L" input
I Rotary commander shift key signal input Not used in this set.
I S meter signal input from tuner unit (TU601)
I A/D key signal input Input of A/D key matrix and front panel attachment decision.
Rotary commander AD level signal input
I
Sense to key voltage level of rotary commander
I Destination select input
I Test mode select signal input "L": test mode
— Analog reference voltage pin
O LCD INHIBIT signal output Not used in this set.
I Reset signal input from reset IC (IC902) "H": reset
— Connect to sub clock (32.768 kHz)
— Connect to sub clock (32.768 kHz)
— At on board writer: 12 V power supply pin (usually ground pin)
— Connect to crystal oscillator (8.38 MHz)
— Connect to crystal oscillator (8.38 MHz)
— Ground pin
I Key acknowledge signal input
I Wireless remote control signal input from remote control receiver IC (IC951)
I SELF switch detection signal input "L": SELF switch on
I Backup power supply detection signal input
I Front panel attachment detection signal input from SW801 "L": panel on
Pin Description