What is the maximum SPI speed support for GR551x?
1. GR551X provide programmable output interface frequency up to 32MHz for SPIM and
2. In acutual application, please refer to datasheet 10.5.5 electrical specification
2 x QSPI interfaces, up to 32 MHz
2 x SPI interfaces (1 SPI Master Interface with 2 slave CS pins + 1 SPI Slave Interface), up to 32 MHz
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