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Trip-Zone Submodule Control and Status Registers
Table 4-17. Trip-Zone Submodule Select Register (TZSEL) Field Descriptions (continued)
Bits
Name
Value
Description
1
CBC2
Trip-zone 2 (TZ2) Select
0
Disable TZ2 as a CBC trip source for this ePWM module
1
Enable TZ2 as a CBC trip source for this ePWM module
0
CBC1
Trip-zone 1 (TZ1) Select
0
Disable TZ1 as a CBC trip source for this ePWM module
1
Enable TZ1 as a CBC trip source for this ePWM module
Figure 4-18. Trip-Zone Control Register (TZCTL)
15
8
Reserved
R-0
7
4
3
2
1
0
Reserved
TZB
TZA
R-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 4-18. Trip-Zone Control Register (TZCTL) Field Descriptions
Bits
Name
Value
Description
15–4
Reserved
Reserved
3–2
TZB
When a trip event occurs the following action is taken on output EPWMxB. Which trip-zone pins
can cause an event is defined in the TZSEL register (
can cause an event is defined in the TZSEL register (
00
High impedance (EPWMxB = High-impedance state)
01
Force EPWMxB to a high state
10
Force EPWMxB to a low state
11
Do nothing, no action is taken on EPWMxB.
1–0
TZA
When a trip event occurs the following action is taken on output EPWMxA. Which trip-zone pins
can cause an event is defined in the TZSEL register (
can cause an event is defined in the TZSEL register (
00
High impedance (EPWMxA = High-impedance state)
01
Force EPWMxA to a high state
10
Force EPWMxA to a low state
11
Do nothing, no action is taken on EPWMxA.
Figure 4-19. Trip-Zone Enable Interrupt Register (TZEINT)
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 4-19. Trip-Zone Enable Interrupt Register (TZEINT) Field Descriptions
Bits
Name
Value
Description
15-3
Reserved
Reserved
2
OST
Trip-zone One-Shot Interrupt Enable
0
Disable one-shot interrupt generation
108
Registers
SPRU791D – November 2004 – Revised October 2007