What is the proper termination scheme for Virtex-II and Virtex-II Pro LVPECL drivers?
The termination scheme for either Virtex-II or Virtex-II Pro LVPECL should consist of a 100 / 187 / 100 ohm resistor network at the driver, and a 100 ohm differential termination resistor at the receiver. This scheme is outlined in both the Virtex-II and Virtex-II Pro User Guides:
http://www.xilinx.com/support/documentation/index.htm
Note:
Supported LVPECL standards are as follows:
- Only LVPECL_33 is available and supported in Virtex-II devices.
- Only LVPECL_25 is available and supported in Virtex-II Pro devices.
AR# 11602 | |
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日期 | 12/15/2012 |
状态 | Active |
Type | 综合文章 |