Where can I find more details about STAC "Shared Time and Counter" bus interface of eTPU module of MPC5746R?
I can see few details in section 18.104.22.168 of the reference manual Rev 6.
The only info about the STAC bus is given in the RM.
The STAC bus allows an eTPU to export its timebase (TCR1/TCR2) to another eTPU as well as to other peripherals such as the eMIOS.
As you mentioned the STAC is described in the chapter 22.214.171.124. See also chapter 43.7.4 and 43.7.8; the eTPUx REDCR ((eTPU_TBR_STAC_ENGx registers) have to be properly set to configure the eTPU STAC bus operation as a STAC Server/Client module. The Server ID assignment is showed in chapter 43.1.7 STAC bus.
If the STAC-bus Export/Import feature is used, the clock ratio of eTPU : eMIOS should be 1:1 or 2:1
Chapter 42.6.3 STAC Bus Client submodule describes STAC bus usage within an eMIOS module. As there are 2 engines (2 eTPU modules) you have 4 fixed time slots.
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