DS2141A创建一个DS / ESF通道服务单元

摘要： DS2141A可以用于创建一个DS / ESF通道服务单元。本应用笔记中有足够的信息，就如何使用这种设备DS2141A创建此通道服务单元和原理图。

Maxim > App Notes > COMMUNICATIONS CIRCUITS TELECOM

Keywords: DS2141, DS2141A, DS, ESF, channel service unit May 08, 2001

APPLICATION NOTE 328
DS2141A Creating a DS/ESF Channel Service Unit

Abstract: DS2141A can be used for creating a DS/ESF Channel Service Unit. This application note has the
adequate information and schematic on how to use this device DS2141A to create this Channel Service Unit.




Figure 1.


Notes:

1. This application uses "looped" timing (i.e., RCLK is tied to TCLK)
2. MHz clock source is used as a transmit clock if no signal exists on the receive side; if the DS2291
declares a carrier loss, then the source of the TCLK will be switched from the recovered clock to the
locally accurate 1.544 MHz sou