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SAA7327 (IC327) :Digital servo processor
1. Block diagram
12
R1
13
R2
7
V RIN
GENERATOR
40
SCL
39
SDA
41
RAB
42
SILD
2
HFIN
1
HFREF
FRONT-END
3
ISLICE
6
I ref
25
TEST1
31
TEST2
44
TEST3
24
SELPLL
16
CRIN
15
CROUT
TIMING
26
CL16
49
CL11/4
48
SBSY
47
SFSY
46
SUB
45
RCK
43
STATUS
CONTROLLER
38
RESET
V SSA1
D1 D2
D3
D4
8
9
10
11
PRE-
ADC
PROCESSING
V ref
MICROCONTROLLER
INTERFACE
DIGITAL
PLL
EFM
DEMODULATOR
TEST
SRAM
RAM
ADDRESSER
SUBCODE
PROCESSOR
DECODER
MICRO-
VERSATILE PINS
INTERFACE
INTERFACE
63
V1
V2/V3
V SSA2
V DDA2
V SSD2
V DDA1
V SSD1
V SSD3
4
14
5
17
33
50
CONTROL
FUNCTION
CONTROL
PART
SAA7327
AUDIO
PROCESSOR
PEAK
DETECT
KILL
34
61
62
32
V4
V5
KILL
V DDD1(P)
V DDD2(C)
58
52
57
54
RA
55
OUTPUT
FO
STAGES
56
SL
64
LDON
59
MOTO1
MOTOR
60
CONTROL
MOTO2
ERROR
CORRECTOR
53
CFLG
FLAGS
51
EBU
DOBM
INTERFACE
30
EF
29
SCLK
SERIAL DATA
28
INTERFACE
WCLK
27
DATA
37
SCLI
SERIAL DATA
35
(LOOPBACK)
WCLI
36
INTERFACE
SDI
20
V neg
21
V pos
18
LN
BITSTREAM
19
DAC
LP
22
RN
23
RP
MGS234
MX-J170V
1-37
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