Pioneer DV-S755AI Service Manual page 129

5
7 PD0274A (DVDM ASSY : IC552)
• Audio Quality Enhancer (AQE)
¶ Pin Arrangement
1 DAIN DALOUT
2 LRIN DAROUT
3 BCKIN
LROUT
4 RSTB
BCKOUT
5 CGND
CGND
6 XIN OVDD
7 IGND
8 ICVDD
9 SCLK
10 SDATA
11 CSB
12
NC
¶ Pin Function
No. Name I/O
1 DAIN I Audio data input
2 LRIN I L/R clock input
3 BCKIN I Bit clock input (48fs/64fs)
4 RSTB I System reset "0" = Reset
−
5 CGND Ground (0V) for Core
6 XIN I System clock input (128fs/192fs/256fs/384fs/512fs/768fs)
−
7 IGND Ground (0V) for Input Buffer
−
8 ICVDD Power supply (3.3V) for Core and Input Buffer
9 SCLK I Microcomputer interface clock input
10 SDATA I Microcomputer interface data input
11 CSB I Microcomputer interface chip select input "0" = Enable, "1" = Disenable
12 NC
13 NC
14 NC
I No connection
15 NC
16 NC
17 NC
−
18 OVDD Power supply (3.3V) for Output Buffer
−
19 OGND Ground (0V) for Output Buffer
−
20 CGND Ground (0V) for Core
21 BCKOUT O Bit clock output (48fs/64fs)
22 LROUT O L/R clock output. WCLK output at PCM1704.
23 DAROUT O R ch audio data output
24 DALOUT O L ch audio data output or L/R ch multiplex output
5
6
24
23
22
21
20
19
18
NC
17
NC
16
NC
NC 15
NC 14
13
NC
6
7
¶ Block Diagram
IBS, TFS, IFS, LRIPOL,
IFORM, CKSEL, TEST
DAIN 1 24
Input
LRIN 2
Inter face
BCKIN 3 LRCK
BACS, BSO, OFORM,
LRPOL, DACS, TEST
24
DALOUT
24
DAROUT 23
Output
Inter face
LROUT 22
n*
21
BCKOUT
LRCK
CKSE
RSTB 4
Timing
Syscllk
Control
XIN 6
SDATA 10
Microcomputer
SCLK 9
Interface
CSB 11
Pin Function
DV-757Ai
7
8
24
IBS, BES, DIR
LRCK Bit Extension
24 LRCK
x8
Digital Filter
ATT +
Deemphasis
x2
IFS, DFS, CKSE,
1st FIR Filter
COES, ATT, DE
2fs
x2
2st FIR Filter
4fs
x2
3st FIR Filter
24 8fs n*
LRCK
24
IFS, SMUTE,
Soft Mute
TEST
n*
LRCK
Note :
"n" in the Block diagram expresses the rate to sample
8
A
B
C
D
E
F
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