SPI Slave Transmit Timing

Texas Instruments

Published Date: 07/13/2005

Description

Several versions of the SPI on TI TMS470 devices transmit on the receive edge of the SPI clock (SPCLK) in slave mode (SOMI). This functionality was added as an enhancement to increase the speed of SPI transfers.

Because of the design implementation the SOMI signal is generated with enough setup and hold time relative to the SPI clock to guarantee correct data transfer at the speeds used on devi