參數資料
型號: PEF24901H
英文描述: ?Quad ISDN Echocancellation Circuit Digital Front-End for 4B3T Line Code?
中文描述: ?四整體數位服務網路Echocancellation電路數字前端4B3T線路碼的終結?
文件頁數: 39/73頁
文件大?。?/td> 1618K
代理商: PEF24901H
PEB 2466
PEF 2466
Interface Description
Hardware Reference Manual
30
2001-02-20
5.2
PCM Interface
The SICOFI
4-μC provides an industry
standard PCM Interface with access to two PCM
highways. The PCM Interface has the following features:
Data rate from 128 kbit/s to 8 Mbit/s per highway,
2 to 128 time slots per frame per highway,
PCM data format serialized 8 bits with MSB first,
Configurable A-Law or μ-Law coding,
Independently configurable time slot and highway for each channel and direction,
PCM clock speed of once or twice the bit rates,
Programmable sampling slopes, and
Programmable frame delay.
5.2.1
PCM Interface Pins
Table 22
PCM Interface Pins
5.2.2
Figure 17
and
Figure 18
illustrate the time slot and bit positions resulting from the
programming example below:
PCM Receive and Transmit Example
Symbol
PCLK
FSC
DRA
DRB
DXA
DXB
TCA#
TCB#
Pin
32
31
27
30
26
29
25
28
Function
PCM-Clock, 128 kHz to 8192 kHz; shared for both highways.
Frame Synchronization Clock, 8 kHz; shared for both highways.
Receive Data input for PCM-highway A.
Receive Data input for PCM-highway B.
Transmit Data output for PCM-highway A, open drain.
Transmit Data output for PCM-highway B, open drain.
Transmit Control output for highway A, low when DXA is active.
Transmit Control output for highway B, low when DXB is active.
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相關代理商/技術參數
參數描述
PEF24901H V2.2 制造商:Lantiq 功能描述:
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PEF24902 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ISDN Line Interface
PEF24902H 制造商:未知廠家 制造商全稱:未知廠家 功能描述:?Quad ISDN Echocancellation Circuit Analog Front End - 2B1Q/4B3T Code?
PEF24902HV2.1 制造商:Rochester Electronics LLC 功能描述:- Bulk