Hi,
- in datasheet Figure 7-37. QSPI Read (Clock Mode 3) , the data is referenced to SCLK, but in Figure 7-38. QSPI Read (Clock Mode 0) , the data is referenced to RTCLK.
Please confirm in clock mode 3, only SCLK matters, the RTCLK is not concerned in terms of bus timing?
2. In datasheet states:
(3) The Device captures data on the falling clock edge in Clock Mode 0 and 3, as opposed to the traditional rising clock edge. Although
non-standard, the falling-edge-based setup and hold time timings have been designed to be compatible with standard SPI devices that
launch data on the falling edge in Clock Modes 0 and 3.
But in TRM 33.3.7.5 SPI/QSPI Flash Devices states:
Uses Mode 3:
– Clock inactive state = high
– Data input captured on rising edge of clock
– Data output generated on falling edge of clock
Please confirm AM5718 capture the data on rising edge or falling edge? Especially in the boot up process executed by ROM code.