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About a timing of CSPI for i.MX253

Question asked by yuuki on Apr 16, 2018
Latest reply on Apr 17, 2018 by Yuri Muhin

Dear all,


I refer to "3.7.5 Configurable Serial Peripheral Interface (CSPI) Timing" of the data sheet.
A timing parameter is listed by "Table 43. CSPI Interface Timing Parameters".

IMX25CEC Rev. 10, 07/2013:
   - 3.7.5 Configurable Serial Peripheral Interface (CSPI) Timing (P.54)
   - Table 43. CSPI Interface Timing Parameters (P.55)


The following is explained in an explanatory note.
What do these parameters mean?


Tsclk = CSPI clock period
Tper = CSPI reference baud rate clock period (PERCLK2)
Tipg = CSPI main clock IPG_CLOCK period

1) Is Tsclk equal to tclko or tclki?
2) What does PERCLK2 mean?
   I was not able to find this in a data sheet and a reference manual.
3) Does IPG_CLOCK mean ipg_clk_cspi1-ipg_clk_cspi3?

May I have advice?


Best Regards,