50.6.2 FLEXCOM Characteristics

In Figure 50-10 and Figure 50-11 below, the MOSI line shifting edge is represented with a hold time equal to 0. However, it is important to note that for this device, the MISO line is sampled prior to the MOSI line shifting edge. As shown in Figure 50-9, the device sampling point extends the propagation delay (t_p) for client and routing delays to more than half the SPI clock period, whereas the common sampling point allows only less than half the SPI clock period.

As an example, an SPI client working in Mode 0 can be safely driven if the SPI host is configured in Mode 0.

Figure 50-9. FLEXCOM in SPI Mode: MISO Capture in Host Mode

Figure 50-10. FLEXCOM in SPI Host Mode 1 and 2

Figure 50-11. FLEXCOM in SPI Host Mode 0 and 3

Figure 50-12. FLEXCOM in SPI Client Mode 0 and 3

Figure 50-13. FLEXCOM in SPI Client Mode 1 and 2

Figure 50-14. FLEXCOM in SPI Client - NPCS Timings