JVC KD-LX555R service manual Pin layout, Block diagram, 1-50No.49793

4.17TC94A20F-011 (IC1652) : DAC/SRAM built in type D-ROM decoder+ MP3 decoder

• Pin layout

• Block diagram

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

48		33
			32
49
64			17
	1		16
32	31	30	29	28	27	26	25	24	23		22	21	20	19	18	17
		DIT				DAC			DAC
					Bus
					Switch
General output	port			C-Pointer	register
			Address calc. 2sets	X-Pointer Y-Pointer	register register				AX AY	ALU	A2 A3		round & limit			Audio I/F
			ERAM 2k word						MZ		A0 A1
Flag			CROM 4k word *7				register X0 X1 X2	Y0 Y1 Y2	MX MY	MAC			round & limit
			Y-RAM	4k word
Timer			X-RAM	4k word	1Mbit SRAM		PRAM 256word		Program control	word=12k			Instruction	decoder		Microcom. I/F
I/FDRAM			SRAMI/F						PROM 4k*3
Interrupt	control
		General				SubCode I/F			VCO				Timing
		inputbport
												generator
49	50	51	52	53	54	55	56	57	58		59	60	61	62	63	64

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

1-50 (No.49793)