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TP3094 Scheda tecnica(PDF) 1 Page - Texas Instruments

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Il numero della parte TP3094
Spiegazioni elettronici  Handles four voice channels
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
Logo TI1 - Texas Instruments

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© 2003 National Semiconductor Corporation
www.national.com
TP3094 COMBO®
Quad PCM Codec/Filter
April 2003
General Description
The TP3094 is a monolithic PCM Codec and Fil-
ter device implemented using a digital signal pro-
cessing architecture. It provides four voice
channels, combining transmit bandpass and re-
ceive low pass channel filters with companding A-
law or m-law PCM encoders and decoders. The
device is fabricated using National’s advanced
CMOS process.
The device includes anti-aliasing filters and sig-
ma-delta converters dedicated to each channel,
and by a common signal processing unit which
performs all the remaining filtering and process-
ing for the four channels.
The TP3094 includes a flexible PCM digital inter-
face, which allows the device to be connected to
PCM busses of different formats. It can also be
connected with other TP3094 devices in a cas-
cade fashion, for a system with up to 128 POTS
interfaces (when a 2.048MHz PCM bus is used).
Features
• Handles four voice channels
• Complete Codec and Filter system including:
- Transmit and receive channel filters
- A-law or
µ-law companding encoder/decoder
• Power down mode for low power consumption
• Compatible to standard time division multi-
plexed PCM bus
- 8 bit mode, frame signal from external reference
- 32 bit mode, internal TSA, with consecutive TS
• Up to 128 channels (32 devices) can be cas-
caded
• Programmable functions (common for all 4
channels):
- A-law or
µ-law
- Single MCLK clock,automatically selectable from
8.192MHz, 4.096MHz, 2.048MHz and
1.536/1.544MHz
- Digital and Analog loopback test modes
• Designed for CCITT and LSSGR applications
• Single +5V power supply
• 44 lead PLCC surface mount package
• Maximize line card circuit density
• Use in Central Office, Loop Carrier, and PBX
equipment subscriber line and trunk cards
• Wide operating temperature range -40°C to
85°C
Connection Diagram
Order Number TP3094V
TP3094
6
5
4
3
2
1
44
43
42 41 40
39
38
37
36
35
34
33
32
30
29
31
18 19
20 21 22 23 24
25 26 27 28
7
8
9
10
11
12
13
14
15
16
17
AGND1
VXI2
GXO2
VRO2
VRO1
NC
GXO1
VXI1
NF
AGND0
VXI0
FSR1
FSX1
FSR2
FSX2
FSR3
FSX3
DVCC
NC
DGND
DX
PT4
See NS Package V44A
COMBO® and TRI-STATE® are registered trademarks of National Semiconductor Corporation


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