JVC KD-LX555R service manual 4.19UPD784225GK-629IC1501 CPU

4.19UPD784225GK-629 (IC1501) : CPU

• Pin layout

60 ~ 41

6140

~~

8021

1 ~ 20

• Pin function

Pin No.	Symbol	I/O	Function
1	TEMP IN	I	Temp. detection input terminal
2,3	-	-	No use
4	AVSS	-	GND
5	ADCONT	O	Output H level during power on. During stop mode:L
6	-	-	-
7	AVREF1	-	3.3V
8	EPROMDI	I	EEPROM data input terminal
9	EPROMDO	O	EEPROM data output terminal. Output H level during input
10	EPROMCK	I/O	EEPROM clock signal input/output terminal
11	LCD CE	O	Chip enable output for LCD driver
12	LCD DA	O	Data output for LCD driver
13	LCD CK	O	Clock output for LCD driver
14	BUS I/O	O	JVC BUS input/output control terminal (negative)
15	BUS I/O	O	JVC BUS input/output control terminal
16	BUS SI	I	JVC BUS data input terminal
17	BUS SO	O	JVC BUS data output terminal
18	BUS SCK	I/O	JVC BUS clock input/output terminal
19	BUSOUT	O	JVC BUS BUSOUT output terminal
20	CD ON	O	Power supply (3.3V) control for CD
21	CD REQ	O	CD mechanism power supply on request signal output terminal
22	CD MUTE	O	CD mute signal output terminal
23	-	-	-
24	DSP RESET	O	CD DSP reset signal output terminal
25	CCE	O	CD DSP chip enable output terminal
26	BUCK	O	CD DSP data clock output terminal
27	BUS3	I/O	CD DSP data 3 input/output terminal
28	BUS2	I/O	CD DSP data 2 input/output terminal
29	BUS1	I/O	CD DSP data 1 input/output terminal
30	BUS0	I/O	CD DSP data 0 input/output terminal
31	2X PLAY	O	RF frequency response select output of 2x speed playback
32	RW SEL	O	CD-RW select output terminal (RW:L)
33	VSS1	-	GND
34	LD	O	Loading signal output terminal (L:loading, H:eject)
35	LD/FE	O	Loading/Feed select signal output terminal (H:LD, L:FE)
36	MP3 DI	I	CD MP3 data input terminal
37	MP3 DO	O	CD MP3 data output terminal
38	MP3 CK	O	Clock signal output terminal for CD MP3 data

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