SPRUJ79 November 2024 F29H850TU , F29H859TU-Q1
The transmitter and receiver cores can be connected together internally to allow for development and debug. This is achieved by setting RX_MAIN_CTRL.INT_LOOPBACK to 1. Internal loopback routes the signals from the corresponding transmitter to the appropriate receiver pin. No configuration needs to be done in the transmitter. Figure 36-9 shows the signal connections with internal loopback.
In this device, there are four FSI transmitter cores (A, B, C, and D), and four receiver cores (A, B, C, and D). When using loopback mode, each of the FSI transmitter cores can be used in the loopback mode with two FSI receiver cores. Refer to Table 36-10 for specific loopback connections between FSI transmitter and Receiver cores.
| TX Module | RX Modules |
|---|---|
| FSIA TX | FSIA RX, FSIC RX |
| FSIB TX | FSIB RX, FSID RX |
| FSIC TX | FSIC RX, FSIA RX |
| FSID TX | FSID RX, FSIB RX |