C28X Access To Epi; Epi Clock Operation, Clkgate = 1, Wr2Cyc = 1; C28X Master And Control Subsystem Access To Epi - Texas Instruments Concerto F28M35 Series Technical Reference Manual

www.ti.com
Figure 17-26. EPI Clock Operation, CLKGATE = 1, WR2CYC = 1

17.9 C28x Access to EPI

The EPI peripheral is a shared resource between master subsystem (M3 and µDMA) and control
subsystem (C28x and DMA). All masters can access external devices via EPI simultaneously. Access to
each master is granted based on round-robin arbitration. EPI configuration registers are shared for READ
only between all masters. Only the master subsystem has write access to EPI configuration registers. This
means that M3 software must configure the EPI in a particular mode before C28x software can access the
external device via EPI.
Figure 17-27. C28x Master and Control Subsystem Access to EPI
SPRUH22I – April 2012 – Revised November 2019
Submit Documentation Feedback
Clock
( )
EPI0S31
WR
( )
EPI0S28
Address
Data
Copyright © 2012–2019, Texas Instruments Incorporated
C28x Access to EPI
External Peripheral Interface (EPI)
1223