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Registers
313
SPRUI07–March 2020
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Enhanced Pulse Width Modulator (ePWM) Module
3.4.6 Trip-Zone Submodule Control and Status Registers
Figure 3-78 through Figure 3-83 and Table 3-38 through Table 3-43 provide the definitions for the trip-
zone submodule control and status registers.
Figure 3-78. Trip-Zone Select Register (TZSEL)
15 14 13 12 11 10 9 8
Reserved Reserved OSHT6 OSHT5 OSHT4 OSHT3 OSHT2 OSHT1
R-0 R-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
7 6 5 4 3 2 1 0
Reserved Reserved CBC6 CBC5 CBC4 CBC3 CBC2 CBC1
R-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 3-38. Trip-Zone Select Register (TZSEL) Field Descriptions
Bits Name Value Description
One-Shot (OSHT) Trip-zone enable/disable. When any of the enabled pins go low, a one-shot trip event occurs for this ePWM
module. When the event occurs, the action defined in the TZCTL register (Table 3-39) is taken on the EPWMxA and EPWMxB
outputs. The one-shot trip condition remains latched until the user clears the condition via the TZCLR register ().
15 Reserved
14 Reserved
13 OSHT6 Trip-zone 6 (TZ6) Select
0 Disable TZ6 as a one-shot trip source for this ePWM module.
1 Enable TZ6 as a one-shot trip source for this ePWM module.
12 OSHT5 Trip-zone 5 (TZ5) Select
0 Disable TZ5 as a one-shot trip source for this ePWM module
1 Enable TZ5 as a one-shot trip source for this ePWM module
11 OSHT4 Trip-zone 4 (TZ4) Select
0 Disable TZ4 as a one-shot trip source for this ePWM module
1 Enable TZ4 as a one-shot trip source for this ePWM module
10 OSHT3 Trip-zone 3 (TZ3) Select
0 Disable TZ3 as a one-shot trip source for this ePWM module
1 Enable TZ3 as a one-shot trip source for this ePWM module
9 OSHT2 Trip-zone 2 (TZ2) Select
0 Disable TZ2 as a one-shot trip source for this ePWM module
1 Enable TZ2 as a one-shot trip source for this ePWM module
8 OSHT1 Trip-zone 1 (TZ1) Select
0 Disable TZ1 as a one-shot trip source for this ePWM module
1 Enable TZ1 as a one-shot trip source for this ePWM module
Cycle-by-Cycle (CBC) Trip-zone enable/disable. When any of the enabled pins go low, a cycle-by-cycle trip event occurs for this
ePWM module. When the event occurs, the action defined in the TZCTL register (Table 3-39) is taken on the EPWMxA and
EPWMxB outputs. A cycle-by-cycle trip condition is automatically cleared when the time-base counter reaches zero.
7 Reserved
6 Reserved
5 CBC6 Trip-zone 6 (TZ6) Select
0 Disable TZ6 as a CBC trip source for this ePWM module
1 Enable TZ6 as a CBC trip source for this ePWM module
4 CBC5 Trip-zone 5 (TZ5) Select
0 Disable TZ5 as a CBC trip source for this ePWM module
1 Enable TZ5 as a CBC trip source for this ePWM module
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