Is there more information anywhere about the size of the SPI FIFO buffer on the FE310-g002? I am curious to know more details such as the depth of the buffer. The UART peripheral is specified as having TX & RX FIFOs with depths of 8 (pg. 79 of the manual) but the SPI peripheral has no such matching information. Am I just not looking in the right place?
Also, what are the units of the watermark values (txmark and remark)? I assume bytes?