39.7.5.1 Read is Controlled by NRD (EBI MODE.READ MODE = 1)

The following figure shows the waveforms of a read operation of a typical asynchronous RAM. The read data is available tPACC after the falling edge of NRD, and turns to 'Z' after the rising edge of NRD. In this case, SMC MODE.READ MODE must be set to 1 (read is controlled by NRD), to indicate that data is available with the rising edge of NRD. The EBI samples the read data internally on the rising edge of Host Clock that generates the rising edge of NRD, whatever the programmed waveform of NCS may be.