When I use CKP=0&CKE=0 and without SS (the SCK is drawn to 0 in hardware), the communication is very well.
While I use CKP=0&CKE=0 and without SS (the SCK is drawn to 1 in hardware), the receiver got some wrong data during communication.

I use pic16f877 and the rate of SSP is 5MHz.

can anyone tell me what is the problem?

thx

Norman wang

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