Texas Instruments AM335 Series Technical Reference Manual

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15.2.4.5 Trip-Zone Submodule Registers
Table 15-78 lists the memory-mapped registers for the trip-zone submodule. All other register offset
addresses not listed in Table 15-78 should be considered as reserved locations and the register contents
should not be modified.
Table 15-78. Trip-Zone Submodule Registers
Offset Acronym Register Description Section
24h TZSEL Trip-Zone Select Register Section 15.2.4.5.1
28h TZCTL Trip-Zone Control Register Section 15.2.4.5.2
2Ah TZEINT Trip-Zone Enable Interrupt Register Section 15.2.4.5.3
2Ch TZFLG Trip-Zone Flag Register Section 15.2.4.5.4
2Eh TZCLR Trip-Zone Clear Register Section 15.2.4.5.5
30h TZFRC Trip-Zone Force Register Section 15.2.4.5.6
15.2.4.5.1 Trip-Zone Select Register (TZSEL)
The trip-zone select register (TZSEL) is shown in Figure 15-85 and described in Table 15-79.
Figure 15-85. Trip-Zone Select Register (TZSEL)
15 9 8 7 1 0
Reserved/OSHTn
(1)
OSHT1 Reserved/CBCn
(1)
CBC1
R/W-0 R/W-0 R/W-0 R/W-0
LEGEND: R/W = Read/Write; -n = value after reset
(1)
Number of register bits depends on how many trip-zone pins are available in the device. See your device-specific data manual.
Table 15-79. Trip-Zone Submodule Select Register (TZSEL) Field Descriptions
Bits Name Value Description
15-8 OSHTn Trip-zone n (TZn) select. 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 (Section 15.2.4.5.2) is taken on the EPWMxA and EPWMxB outputs. The one-shot
trip condition remains latched until you clear the condition via the TZCLR register (Section 15.2.4.5.5).
0 Disable TZn as a one-shot trip source for this ePWM module.
1 Enable TZn as a one-shot trip source for this ePWM module.
7-0 CBCn Trip-zone n (TZn) select. 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 (Section 15.2.4.5.2) is taken on the EPWMxA and EPWMxB outputs. A
cycle-by-cycle trip condition is automatically cleared when the time-base counter reaches zero.
0 Disable TZn as a CBC trip source for this ePWM module.
1 Enable TZn as a CBC trip source for this ePWM module.
1596
Pulse-Width Modulation Subsystem (PWMSS) SPRUH73H–October 2011–Revised April 2013
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Texas Instruments AM335 Series Specifications

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Brand	Texas Instruments
Model	AM335 Series
Category	Computer Hardware
Language	English