參數(shù)資料
型號(hào)： TP3094
廠商： National Semiconductor Corporation
元件分類： Codec
英文描述： Quad PCM Codec/Filter
中文描述： 四PCM編解碼器/濾波器
文件頁(yè)數(shù)： 1/19頁(yè)
文件大小： 186K
代理商： TP3094
2000 National Semiconductor Corporation
www.national.com
TP3094 COMBO
Quad PCM Codec/Filter
February 2000
T
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
See NS Package V44A
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
P
A
V
G
V
P
P
P
A
M
AGND1
VXI2
GXO2
VRO2
VRO1
GXO1
VXI1
NC
NF
AGND0
VXI0
G
V
A
P
P
T
P
T
F
F
FSR1
FSX1
FSR2
FSX2
FSR3
FSX3
NC
DVCC
DGND
PT4
DX
D
P
COMBO
and TRI-STATE
are registered trademarks of National Semiconductor Corporation
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參數(shù)描述
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