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Original question:

TDA4VM: MCSPI: Timing and supported frequencies

DRA829V: MCSPI max bus speed: 50MHz or Tc(spiclk) 20.8 ns?

Adam Dupuis
Prodigy 60 points
Part Number: DRA829V
Other Parts Discussed in Thread: TDA4VM,

Hi TI,

In the TRM, spruil1c for the DRA829V it notes a max MCSPI bus speed of 50MHz. The DS for the DRA829V and TDA4VM notes the MCSPI timing for Tc(spiclk), SM1 on page 257, as min 20.8 ns. This means a speed of ~48 MHz.

Can the bus operate at 50MHz, why the 20.8ns min periode?

cheers,

Adam