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4.17 TC94A20F-011 (IC1652) : DAC/SRAM built in type D-ROM decoder+ MP3 decoder
• Pin layout
• Block diagram
48 33
32
17
49
64
116
32 31 30 29 28
27
26
25
33
34
35
36
24
23
22 21
20 19 18 17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
64
63
6261
6059
5857565554
53
52
51
5049
48
47
46
45
44
43
42
41
40
39
38
37
DIT
DAC DAC
Bus
Switch
Address calc.
2sets
General output
port
C-Pointer
register
Y-Pointer
register
X-Pointer
register
ERAM
2k word
CROM
4k word
*7
Y-RAM
4k word
X-RAM
4k word
Flag
Timer
register
X0 X1 X2
Y0 Y1 Y2
MX AX AYMY MZ
ALU
A2A1A0 A3
round & limit round & limit
Audio I/F
Microcom. I/F
MAC
Program
control
Instruction
decoder
PROM
4k*3
=12k word
PRAM
256word
1Mbit
SRAM
SRAM I/F
Interrupt
control
DRAM I/F
General
inputbport
SubCode
I/F
VCO
Timing
generator