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DS90UB954與DS90UB953使用同軸電纜連結,傳輸頻率升不上50MHz

你好

目前的測試狀況為:

1. DS90UB954的EVB與DS90UB953的EVB使用同軸電纜做連結,測試時,確定傳輸頻率可調至50MHz

2. CPU的EVB搭配DS90UB954的轉接板(自行製作)與DS90UB953的EVB使用同軸電纜做連結,測試時,目前傳輸頻率僅止於25MHz

DS90UB954的轉接板線路與layout,謹守ref. schematic與layout guild

麻煩請告知,針對HW OR FW該怎麼修正

謝謝

DIAMOND