AnsweredAssumed Answered

MCF5213 QSPI chip select resetting after each byte

Question asked by Mike Stone on Oct 24, 2007
Latest reply on Sep 8, 2009 by yevgenit
I'm trying to read a serial eeprom, 25LC640.
I'm using a continuous read of eight bytes (plus the 3 bytes, cmd, addr hi, addr lo).
I set the continuous bit(15) of the QCR and the QSPI_CS bits to 0xE for CS0 and the when looking at the scope during a read the CS0 keeps resetting every 8 bits, it's supposed to stay low for 11 bytes. It should go low, then the read cmd is sent, the 16-bit address is sent, then it should stay low for 8 bytes of data. Then CS0 should go high, but it goes hi inbetween every 8-bits, just like the bit 15 in the cmd byte isn't set.
This code works on a 5216 with the same eeprom.