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T8531A Arkusz danych(PDF) 4 Page - Agere Systems

Numer części T8531A
Szczegółowy opis  T8531A/8532 Multichannel Programmable Codec Chip Set
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Producent  AGERE [Agere Systems]
Strona internetowa  http://www.agere.com
Logo AGERE - Agere Systems

T8531A Arkusz danych(HTML) 4 Page - Agere Systems

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Agere Systems Inc.
Preliminary Data Sheet
September 2001
Codec Chip Set
T8531A/T8532 Multichannel Programmable
General Description (continued)
T8532 Description
The T8532 block diagram is shown in Figure 2. Each of its eight channels consists of an antialias filter, sigma-delta
A/D and D/A converters, reconstruction and smoothing filters, termination impedance synthesis, and selectable
gain. The digital oversampled data is multiplexed onto a serial data port designed to interface with the T8531A
Another serial interface accepts control data from the T8531A for activating the various gain settings, self-test, and
powerdown modes. This chip also contains a precision voltage reference.
5-3794.b (F)
Figure 2. Block Diagram of T8532 Octal Converter
5-3796.d (F)
* Antialiasing filter.
Figure 3. Block Diagram of One T8532 Analog Channel
8-CHANNEL
A/D D/A
ANALOG HYBRID
&
TERMINATION
VOLTAGE
REFERENCE
OVERSAMPLED
DATA
INTERFACE
CONTROL
INTERFACE
VTX[7:0]
VRTX[7:0]
VRP[7:0]
VRN[7:0]
VDDA
VSSA
VDD
VSS
OSDX[1:0]
OSDR[1:0]
OSCK
OSFS
CDO
CDI
CCS
RSTB
GAIN
AAF*
∑-∆
A/D
AT
GAIN
SUM
GAIN
V REFERENCES
RECEIVE
FILTER
D/A
D/A
VTX
VRP
VRN
1.024 MHz
1.024 MHz
VRTX
DIGITAL LOOPBACK


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