Texas Instruments TMS320F2837 D Series Workshop Guide And Lab Manual

ePWM
TMS320F2837xD Microcontroller Workshop - Control Peripherals 7 - 39
These event triggers can occur when the time-base counter equals zero, period, zero or period,
the up or down count match of a compare register. Recall that the digital-compare subsystem
can also generate an ADC start of conversion based on one or more compare events. Notice
counter up and down are independent and separate.
Name Description Structure
ETSEL Event-Trigger Selection EPwmxRegs.ETSEL.all =
ETPS Event-Trigger Pre-Scale EPwmxRegs.ETPS.all =
ETFLG Event-Trigger Flag EPwmxRegs.ETFLG.all =
ETCLR Event-Trigger Clear EPwmxRegs.ETCLR.all =
ETFRC Event-Trigger Force EPwmxRegs.ETFRC.all =
ePWM Event-Trigger Sub-Module
Registers
(lab file: EPwm.c)
Refer to the Technical Reference Manual for a complete listing of registers
The event-trigger submodule also incorporates pre-scaling logic to issue an interrupt request or
ADC start of conversion at every event or up to every fifteenth event.
ePWM Event-Trigger Selection Register
EPwmxRegs.ETSEL
15 11 7 - 4 2 - 0
INTEN INTSEL
reserved
3
SOCBSEL
SOCASEL
SOCAENSOCBEN
10 - 814 - 12
Enable SOCB / A
0 = disable
1 = enable
EPWMxSOCB / A Select
000 = DCBEVT1 / DCAEVT1
001 = CTR = 0
010 = CTR = PRD
011 = CTR = 0 or PRD
100 = CTRU = CMPA
101 = CTRD = CMPA
110 = CTRU = CMPB
111 = CTRD = CMPB
Enable EPWMxINT
0 = disable
1 = enable
EPWMxINT Select
000 = reserved
001 = CTR = 0
010 = CTR = PRD
011 = CTR = 0 or PRD
100 = CTRU = CMPA
101 = CTRD = CMPA
110 = CTRU = CMPB
111 = CTRD = CMPB

Texas Instruments TMS320F2837 D Series Specifications

General

Brand	Texas Instruments
Model	TMS320F2837 D Series
Category	Microcontrollers
Language	English