Hi,
In our board, we want to use Am1808 as a MASTER and 2 other chips as slaves on an SPI bus. Is it possible to drive these 2 slaves from AM1808 with 2 distinct Chip-select pins. It seems from documantion that AM1808 has 6 CS pins for SPI0 and 7 CS pins for SPI1. But there are some other explanations on documents saying AM1808 has only one hardware CS. I copied those explanations below:
On SPRUFW1A document and in section 2.8 SPI Operation: 4-Pin with Chip Select Mode
In master mode, the SPIx_SCS[n] pin functions as an output, and toggles when a specific slave device is
selected. However, this is most useful on devices that support multiple SPIx_SCS[n] pins. The SPI only
supports a single SPIx_SCS[n] and so the usefulness of this pin in master mode is limited. In practice,
general-purpose I/O pins are needed to support multiple slave device chip selects.
And on SPRS653A document and in section 3.1 Device Characteristics table
SPI ---------->>> 2 (Each with one hardware chip select)
But in the same document on Pin Map section, 5-6 CS pins exists for SPI0-1 respectively.
Can you clarify that how many slaves can be connected to AM1808 SPI module with different CS pins.
