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參數(shù)資料
| 型號(hào)： | MV1442 |
| 廠商： | Zarlink Semiconductor Inc. |
| 英文描述： | HDB3 Encoder/Decoder/Clock Regenerator |
| 中文描述： | 采用HDB3編碼器/解碼器/時(shí)鐘再生器 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 726K |
| 代理商： | MV1442 |
Features
On-chip Digital Clock Regenerator
HDB3 Encoding and Decoding to CCITT
Recommendation G.703
Asynchronous Operation
Simultaneous Encoding and Decoding
Clock Recovery Signal allows Off-chip Clock
Regeneration
Loop Back Control
HDB3 Error Monitor
‘All Ones’ Error Monitor
Loss of Input Alarm
Low Power Operation
2.048MHz or 1.544MHz Operation in External or
Internal Clock Recovery mode
8.448MHz Operation in External Clock Recovery
mode
Figure 1 - Pin connections – top view
-0.5V to +7V
V
DD
-0.5V to GND -0.5V
V
DD
-0.5V to GND -0.5V
-55
°
C to +125
°
C
Absolute Maximum Ratings
V
DD
Inputs
Outputs
Storage temperature
MV1442
HDB3 Encoder/Decoder/Clock Regenerator
DS3077
ISSUE 4.0
July 2001
Ordering Information
MV1442/IG/DPAS
DIL plastic package
MV1442/IG/MPES
Miniature plastic package
MV1442/IG/MPEG
Miniature plastic (tape and reel)
The MV1442, along with other devices in the Zarlink 2Mbit
PCM signalling series comprise a group of circuits which will
perform the common channel signalling and error detection
functions for a 2.048Mbit PCM transmission link operating in
accordance with the appropriate CCITT recommendations.
The circuits are fabricated in CMOS and operate from a
single +5V supply with all inputs and outputs being TTL
compatible.
The MV1442 is an encoder/decoder for the HDB3 pseudo-
ternary transmission code, described in Annex A of CCITT
Recommendation G.703. The device encodes and decodes
simultaneously and asynchronously. Error monitoring
functions are provided to detect violations of the HDB3
coding, all ones detection and loss of input (all zeros detection)
In addition a loop back function is provided for terminal
testing. The MV1442 may be selected to function in either
internal or external clock recovery modes. Internal clock
recovery mode may be selected tor either 1.544MHz or
2.048MHz operation and in this mode an external 16.384MHz
crystal (12.352MHz for 1.544MHz operation) is required.
External clock recovery mode may be selected for 1.544MHz,
2.048MHz or 8.448MHz operation.
NRZ DATA IN
ENCODER CLOCK
LOSS OF INPUT
NRZ DATA OUT
DECODER CLOCK
RESET AIS
AIS
MODE
GND
18
17
16
15
14
13
12
11
10
1
2
3
4
5
6
7
8
9
V
DD
TXD2
TXD1
RXD2
LOOP TEST ENABLE
RXD1
CRYSTAL OUT/CDR
DOUBLE VIOLATION
CRYSTAL IN
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
NRZ DATA IN
ENCODER CLOCK
LOSS OF INPUT
NRZ DATA OUT
DECODER CLOCK
RESET AIS
AIS
MODE
GND
V
DD
TXD2
TXD1
RXD2
LOOP TEST ENABLE
RXD1
CRYSTAL OUT/CDR
DOUBLE VIOLATION
CRYSTAL IN
DP18
MP18
(WIDE BODY)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MV1442DPAS | HDB3 Encoder/Decoder/Clock Regenerator |
| MV1442IG | HDB3 Encoder/Decoder/Clock Regenerator |
| MV1442MPES | HDB3 Encoder/Decoder/Clock Regenerator |
| MV1471CGDGAS | Encoder/Decoder |
| MV1471CGDPAS | Encoder/Decoder |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MV1442/IG/DPAS | 制造商:Rochester Electronics LLC 功能描述: 制造商:Zarlink Semiconductor Inc 功能描述: |
| MV1442/IG/MPES | 制造商:Rochester Electronics LLC 功能描述: 制造商:Zarlink Semiconductor Inc 功能描述: |
| MV1442DG | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Encoder/Decoder |
| MV1442DP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Encoder/Decoder |
| MV1442DPAS | 制造商:ZARLINK 制造商全稱:Zarlink Semiconductor Inc 功能描述:HDB3 Encoder/Decoder/Clock Regenerator |
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