Daewoo 14Q3, 21Q2, 21Q1, 14T2, 21Q4, 14Q2, 20Q1, 14Q1, 21T2 Pin Description, Pin Name Symbol Description

(4)Pin Description

*A : DW5255M*/DW5255RM*, *B : DW370ASM*

Pin		Name			Symbol	Description
A*	B*	A*	B*			A*			B*
1	1	P3.1	T1IC1/CR	SYS		NTSC OUT for switching SAW filter
						K6259
						- PAL/SECAM : L
						- NTSC : H
2	2	P0.7/Open Drain	A0	BUSSTOP		I2C BUS STOP IN for Computer
						controlled alignment in Factory
						( Active Low )
3	3	P0.6/Open Drain	A1	SDA		Serial data IN/OUT for I2C
4	4	P0.5/Open Drain	A2	SCL		Serial clock IN/OUT for I2C
5	5	P0.4/Open Drain	A3	OPTION		#5	#6	Teletext	#6
6	6	P0.3/Open Drain	A4	OPTION		H	H	West Teletext	H : STAND-BY
						L	H	East Teletext	L : POWER ON
						H	L	Turkish Teletext
7	7	P0.2/Open Drain	A5	OPTION		Not Used
8	8	P0.1/Open Drain	PWM1-0/ Open Drain	OPTION		Not Used
9	9	P0.0/Open Drain	PWM1-1/ Open Drain	LED		LED drive OUT
						- Stand-by mode : H
						- Operating mode : L
								( IR reception : pulse )
10	10	VSS			VSS	ground
11	11	VCC			VCC	Power Supply
12	12	XTAL1	OSCIN		OSCIN	Input to inverting osc. Amplifier
13	13	XTAL2	OSCOUT		OSCOUT	Output of inverting osc. Amplifier
14	14	P4.0/ALE	PWM1-2/Open Drain			Not Used			H : I/M, L : B/D
15	15	RESET	RESET/Open Drain	RST		RESET IN (ACTIVE LOW)
16	16	P1.7/14BIT PWM	PWM2-0		VT	TUNING VOLTAGE OUT
17	17	P1.6/14BIT PWM	PWM2-1		SW	H : I/M			Not Used
						L : B/D
18	18	P1.5/8BIT PWM	PWM1-3/Open Drain	F/SW		Not Used
19	19	P1.4/8BIT PWM	PWM1-4/Open Drain			Not Used
20	20	P1.3/8BIT PWM	PWM1-5/Open Drain	MUTE		AUDIO MUTE OUT
21	21	P1.2/8BIT PWM	TEST		GND	(Must be tied 0V for DW370M*)
22		P1.1/8BIT PWM				Not Used
23		P1.0/8BIT PWM				Not Used
24		VSSA		VSSA		Analog GND for Slicer
25		FIL3			FIL3	PLL Loop Filter I/O for Phase Shifting
26		FIL2			FIL2	PLL Loop Filter I/O for TTX Slicing
27		FIL1			FIL1	PLL Loop Filter I/O for VPS Slicing
28		VCCA		VCCA		Analog Supply for Slicer
29		IREF		IREF		Reference Current for Slicer PLLs

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