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Trip-Zone Submodule Control and Status Registers
Figure 4-17. Trip-Zone Select Register (TZSEL)
15 14 13 12 11 10 9 8
Reserved OSHT6 OSHT5 OSHT4 OSHT3 OSHT2 OSHT1
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 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 4-17. Trip-Zone Submodule 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 4-18 ) 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
(Table 4-21 ).
15:14 Reserved 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 4-18 ) is taken on the
EPWMxA and EPWMxB outputs. A cycle-by-cycle trip condition is automatically cleared when the time-base counter
reaches zero.
7:6 Reserved 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
3 CBC4 Trip-zone 4 ( TZ4) Select
0 Disable TZ4 as a CBC trip source for this ePWM module
1 Enable TZ4 as a CBC trip source for this ePWM module
2 CBC3 Trip-zone 3 ( TZ3) Select
0 Disable TZ3 as a CBC trip source for this ePWM module
1 Enable TZ3 as a CBC trip source for this ePWM module
SPRU791D – November 2004 – Revised October 2007 Registers 107
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