|
|
M3内核的片子，LPC1788支持SDRAM，随意原来STM32F的板子，换成LPC1788。以太网接口没有修改的就用上了，MII接口。
现在板子调试了，老是丢数据，经查找，是接收的数据经常有异常，怀疑是PHY问题，折腾一天，
其实在LPC1788的勘误手册已经提到了，
Problem:
In MII mode, the transmit data TXD3:0 and transmit enable TX_EN should reference the
TX_CLK from the Ethernet PHY. However, due to a configuration error in the chip, the
transmit data TXD3:0 and transmit enable TX_EN reference RX_CLK in data
transmission. The consequence of this error is that a small percentage of packets cannot
be received by the PHY.
Work-around:
This will be fixed with the next silicon release.
Note: There is no issue in RMII mode operation.
哎，怎么当时没看勘误手册呢，
还有，LPC1788芯片都出来好几年了，怎么还是有这个问题呢。硅片不改了？ |
阿莫论坛20周年了！感谢大家的支持与爱护！！
月入3000的是反美的。收入3万是亲美的。收入30万是移民美国的。收入300万是取得绿卡后回国，教唆那些3000来反美的！
|
发表于 2013-7-23 13:50:28
