Texas Instruments 28xxx 用户手册

Action

qualifier

(AQ)

Time-base (TB)

Dead

band

(DB)

Counter compare (CC)

Trip

zone

(TZ)

Event

trigger and

interrupt

(ET)

PWM

chopper

(PC)

TZ1 to TZ6

TBPRD shadow (16)

TBPRD active (16)

CTR = PRD

CTR = ZERO

CTR = CMPA

CTR = CMPB

CTR_Dir

TBCTL[SWFSYNC] (software

forced sync)

TBPHS active (16)

Counter

UP/DWN

(16 bit)

TBCTR

active

(16)

Sync

in/out

select

MUX

S0

S1

CMPA active (16)

CMPA shadow (16)

CMPB active (16)

CMPB shadow (16)

EPWMxA

EPWMxB

EPWMxSOCB

EPWMxSOCA

EPWMxINT

EPWMxSYNCI

EPWMxSYNCO

TBCTL[SWFSYNC]

CTR_PRD

TBCTL[PHSEN]

CTR_Dir

CTR = ZERO

CTR = CMPA

CTR = CMPB

16

16

16

16

16

16

Phase

control

EPWMxTZINT

CTR=ZERO

also shows the key internal submodule interconnect signals. Each submodule is described in

detail in its respective section.

The complete ePWM module control and status register set is grouped by submodule as shown in

. Each register set is duplicated for each instance of the ePWM module. The start address for

each ePWM register file instance on a device is specified in the appropriate data manual.

SPRU791D – November 2004 – Revised October 2007

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