Sony Ericsson STR-DE375 specifications IC Block Diagrams, IC1 BU1924 Main Baord

STR-DE375

3-11. IC BLOCK DIAGRAMS

IC1	BU1924 (MAIN BAORD)
RCLK	(NC)	XO	XI	VDD2	VSS2	T1	T2
16	15	14	13	12	11	10	9
	CLOCK						TEST
		DEFFERENTIAL		BIPHASE	PLL		PLL 57KHz
		DECODER		DECODER	1187.5Hz		RDS/ARI
					8TH SWITCHED
					CAPACITOR
						FILTER
1	2	3	4	5	6	7	8
QUAL	RDATA	VREF	MUX	VDD1	VSS1	VSS3	CMP
IC701, IC702 uPC2581V (MAIN BOARD)							IC950 NJM2103 (POWER BOARD)

3-12. IC PIN FUNCTION DESCRIPTION IC103 ∝PD780206GF-092-3BA (DISPLAY BOARD)

Pin No.	Pin Name		I/O	Description
1	VDD +5V		I	Power supply to ∝-com
2		S1	O	Control Video IC switching (Not used)
3		S2	O	Control Video IC switching (Not used)
4	IC.MUTE		O	Control mute of Video IC (Not used)
5		P34	—	Not used
6		P33	—	Not used
7	S.DATA (M61501FP)		O	Volume IC data
8	S.CLK (M61501FP)		O	Volume IC clock
9	S.CE (M61501FP)		O	Volume IC enable
10			I	Read ∝-com reset signal
		RESET
11		X2	—	Connection to a crystal resonator
12		X1	—	Connection to a crystal resonator
13		VSS	—	Programming pow. supply (Cnnected to ground)
14		—	—	Not used
15	RDS.DATA.IN		I	Read decoded RDS data
16	VDD +5V		—	Power supply to ∝-com

BIAS CIRCUIT

PROTECTOR
REG	DRIVE	PRE	PRE	DRIVE
		DRIVE	DRIVE

1

2

3

4

5

6

7

8

9

10 11 12

13 14

15

MUTE

+VOUT1

–VOUT1

COMP1

NF1

IN1

GND

IN2

NF2

COMP2

–VOUT2

+VOUT2

VCC1 VCC2

VEE

IC501 STK350-230 (MAIN BOARD)

TR3

R1

TR1

INPUT

1

TR2

NF

2

TR4

R2

3

4

-VEOUT

5

R6

+VEOUT

TR7

6

TR6

R4

TR5

VSS

7

R3

D4

D3

GND

8

SUB

D1

D2

R5

R8

R7

VCC

9

R9

TR8

CR	1						8	RESET
						–	+
VSC	2	VREF					7	VSA
	+	–
OUTC	3						6	VSB/SESIN
GND	4						5	V+
		Q
		R	S	+	–	+	–

17		S.CE (LV1050M)					O	Chip enable for ICs
18							O	Output clock signal
	S.CLK(DOLBY.TUNER)
19							O	Output data signal
	S.DATA(DOLBY.TUNER)
20		S.CE (TUNER)					O	Chip enable for ICs
21							I	Tuner has tuned to a freq.
			AUTO-STOP
22				T.MUTE			O	Muting tuner during scanning
23							I	Tuned freq. has stereo
			STEREO-IN
24							I	Input tuner freq. data
				PLL.DATA
25						AVSS	—	Analog ground
26							I	Read remote sensor signal
					SIRCS
27						P16	—	Not used
28				SIGNAL			I	Detect RDS signal level
29				VERSION			I	Read version setting
30				A/D IV			I	Read key push signal
31				A/D III			I	Read key push signal
32					A/D II		I	Read key push signal
33						A/D I	I	Read key push signal
34		AVDD +5.0V					—	Analog Power Supply
35				AVREF			—	Analog reference voltage
36						P03	—	Not used
37						P02	—	Not used
38		RDS.CLK.IN					I	Read decoded RDS clock
39							I	Read signal when AC off
						STOP
40						VSS	—	∝-com ground
41						P74	—	Not used
42						P73	—	Not used
43						P72	—	Not used
44						P71	—	Not used
45		MUTING LED					O	Control MUTING LED
46			VDD +5.0V				—	Power supply to ∝-com
47							I	Detect Protector Status
				PROTECT
48			POWER-RY				O	Control Power relay
49			ENCODER				I	Read volume encoder changing
50			ENCODER				I	Read volume encoder changing

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