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Synchronous Serial Port (SSP)

Function explanation : [Function explanation]

Simulation : [Clock frequency] [SPI format] [SSI format] [Microwire format]

Function explanation

Function explanation

  • TMPM369FDFG contains the SSP (Synchronous Serial Port) with 3 channels.
  • The SPI format, SSI format, and Microwire format are supported as the communication protocols.
  • 4-wire bidirectional communication is performed using the clock "SPxCLK," transmit data "SPxDO," receive data "SPxDI," and synchronous "SPxFSS."
  • Communication speed in master mode is up to 10 Mbps in channel 0/1, and up to 20 Mbps in channel 2. The speed in the slave mode is up to 3.3 Mbps in the channel 0/1, and up to 6.6 Mbps in the channel 2.
  • The data size is from 4 bits to 16 bits.
  • Eight-layered FIFO for the transmission and reception.
Function explanation

SPI format

  • This is a Motorola SPI frame format.
  • The synchronized signal (SPxFSS) falls to "L" at start of transmission, and transmission and reception are performed simultaneously after that. The synchronized signal is returned to "H" after transmission ends.

SSI format

  • This is a TI synchronous (SSI) frame format.
  • At the start of transmission, "H" pulse is combined with the clock (SPxCLK), and is output to the synchronized signal (SPxFSS), and transmission and reception are performed simultaneously after that.

Microwire format

  • This is a National Microwave frame format.
  • The synchronized signal (SPxFSS) falls to "L" at start of transmission, and 8-bit control code is output from the master. The response data are received after that. The synchronized signal is returned to "H" after the end of transmission.
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