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CSP1027 Datasheet(PDF) 5 Page - Agere Systems

Part # CSP1027
Description  CSP1027 Voice Band Codec for Cellular Handset and Modem Applications
PDF  64 Pages
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Manufacturer  AGERE [Agere Systems]
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CSP1027 Datasheet(HTML) 5 Page - Agere Systems

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Lucent Technologies Inc.
5
Data Sheet
CSP1027 Voice Band Codec for
December 1999
Cellular Handset and Modem Applications
4 Architectural Information
Figure 3. CSP1027 Block Diagram
5-7559 (F)
IIR
LOW-PASS
CLOCK
GENERATION
CLK
XLO
XHI
CKO1
CKO2
CDIV0 (cioc1), CDIV1 (cioc1),
CDIV2 (cioc0), CDIV3 (cioc2),
CDIF0 (cioc2), CDIF1 (cioc3),
CDIF2 (cioc3)
1 MHz OVERSAMPLING CLOCK
ON-CHIP
VOLTAGE
REFERENCE
CIRCUITS
VREG
(3.0 V)
REFC
A/D INPUT
BLOCK
MIC
AUX
INSEL
cioc0
IRSEL
cioc0
A/D
TEST
cioc0
SYNC-CUBIC
DIGITAL
DECIMATION
FILTER
7th-ORDER
IIR
LOW-PASS
FILTER
3rd-ORDER
IIR
HIGH-PASS
FILTER
C
D
X
(A/D)
DO
STATUS
SIO
CONTROL
1/125
1 MHz OVERSAMPLING CLOCK
8 kHz
IOCK
SYNC
SADD
SMODE2
SMODE1
SMODE0
HPFE
cioc3
M
U
X
DIGITAL
MODULATOR
AND GAIN
ADJUST
D/A
ANALOG
LOW-PASS
FILTER
(35 kHz)
OUTPUT
AMP
AOUTP
AOUTN
SAMPLE/HOLD
AND 7th-ORDER
FILTER
3rd-ORDER
IIR
HIGH-PASS
FILTER
C
D
X
(A/D)
I
S
R
DI
c
i
o
c
3
c
i
o
c
2
c
i
o
c
1
c
i
o
c
0
POWER-ON
RESET
PORCAP
PORB
RSTB
TSTPOR
cioc3
M
U
X
M
U
T
E
M
U
X
M
U
X
O
S
R
M
U
X
TEST
cioc0
DITHER
cioc3
OGSEL
cioc0
HPFE
cioc3
MUTE
cioc0
INTERNAL RESET
EIGS
XOSCEN



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