SPRUJ79 November 2024 F29H850TU , F29H859TU-Q1
For a continuous export of data from the CLB peripherals, SPI RX buffers can be used. CLB data can be exported through the SPI RX buffers without CPU/CLA interventions.
CLB1 to CLB5 have access to SPIA to SPIE, respectively, as shown in Table 11-19.
| CLB Instance | SPI Instance |
|---|---|
| CLB1 | SPIA |
| CLB2 | SPIB |
| CLB3 | SPIC |
| CLB4 | SPID |
| CLB5 | SPIE |
When the CLB to SPI data exporting is enabled, 16-bit data can be exported from CLB to SPI RX buffers. The 32-bit HLC R0 register is the data that is exported to the SPI RX buffers. The user can select which 16-bit range of the HLC R0 is exported by configuring the CLB_SPI_DATA_CTRL_HI.SHIFT. The CLB also controls when HLC R0 data must be transferred to the SPI RX buffer through CLB_SPI_DATA_CTRL_HI.STRB that selects one of the HLC event signals from the static switch block.
When CLB to SPI data exporting is required, note:
Figure 11-20 CLB Control of SPI RX
Buffer