Specifications

2000 Jun 26 12 Philips Semiconductors Product specification
Digital servo processor and Compact Disc decoder with integrated DAC for video CD (CD7 II)
SAA7327
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SUBCODE
PROCESSOR
DIGITAL PLL
AND
DEMODULATOR
FIFO
ERROR
CORRECTOR
FADE/MUTE/
INTERPOLATE
DIGITAL
FILTER
PHASE
COMPENSATION
DE-EMPHASIS
FILTER
KILL
1
0
1
0
1
0
1
0
1
0
I
2
S/EIAJ BUS
INTERFACE
I
2
S/EIAJ
LOOPBACK
INTERFACE
WCLI
SCLI
SDI
LN
LP
RN
RP
SCLK
WCLK
DATA
EF
decoder
reg 3
V
neg
decoder reg C
decoder reg 3
reg F
decoder reg A
1
0
1: decoder reg 3 ≠ 101X
0: decoder reg 3 = 101X
(CD-ROM modes)
1: shadow reg 7 = XX1X
0: shadow reg 7 = XX0X
1: shadow reg 7 = XX1X
0: shadow reg 7 = XX0X
0: reg D = XX01
1: decoder reg A = XX0X
0: decoder reg A ≠ XX1X
V4 SUBCODE
INTERFACE
MICROCONTROLLER
INTERFACE
CD GRAPHICS
INTERFACE
EBU
INTERFACE
SBSY
SFSY
SUB
RCK
DOBM
V4
SDA
output from
data slicer
1: decoder reg 3 = XX10
(1f
s
mode)
0: decoder reg 3 ≠ XX10
1: no pre-emphasis detected
OR reg D = 01XX
(de-emphasis signal at V5)
0: pre-emphasis detected
AND reg D ≠ 01XX
KILL
V3
MGS180
1
0
ONBOARD
DAC
1: shadow reg 7 = XXX1
0: shadow reg 7 = XXX0
1
0
1
0
Fig.7 Simplified data flow of decoder functions.