Texas Instruments 28xxx, Reference Manual

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4.7 Event-Trigger Submodule Registers
Event-Trigger Submodule Registers
Figure 4-21. Trip-Zone Clear Register (TZCLR)
15 8
Reserved
R-0
7 3 2 1 0
Reserved OST CBC INT
R-0 R/W-0 R/W-0 R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 4-21. Trip-Zone Clear Register (TZCLR) Field Descriptions
Bits Name Value Description
15-3 Reserved Reserved
2 OST Clear Flag for One-Shot Trip (OST) Latch
0 Has no effect. Always reads back a 0.
1 Clears this Trip (set) condition.
1 CBC Clear Flag for Cycle-By-Cycle (CBC) Trip Latch
0 Has no effect. Always reads back a 0.
1 Clears this Trip (set) condition.
0 INT Global Interrupt Clear Flag
0 Has no effect. Always reads back a 0.
1 Clears the trip-interrupt flag for this ePWM module (TZFLG[INT]).
NOTE: No further EPWMx_TZINT PIE interrupts will be generated until the flag is cleared. If
the TZFLG[INT] bit is cleared and any of the other flag bits are set, then another interrupt
pulse will be generated. Clearing all flag bits will prevent further interrupts.
Figure 4-22. Trip-Zone Force Register (TZFRC)
15 8
Reserved
R-0
7 3 2 1 0
Reserved OST CBC Reserved
R-0 R/W-0 R/W-0 R- 0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 4-22. Trip-Zone Force Register (TZFRC) Field Descriptions
Bits Name Value Description
15-3 Reserved Reserved
2 OST Force a One-Shot Trip Event via Software
0 Writing of 0 is ignored. Always reads back a 0.
1 Forces a one-shot trip event and sets the TZFLG[OST] bit.
1 CBC Force a Cycle-by-Cycle Trip Event via Software
0 Writing of 0 is ignored. Always reads back a 0.
1 Forces a cycle-by-cycle trip event and sets the TZFLG[CBC] bit.
0 Reserved Reserved
Figure 4-23 through Figure 4-27 and Table 4-23 through Table 4-27 describe the registers for the
event-trigger submodule.
110 Registers SPRU791D – November 2004 – Revised October 2007
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