Texas Instruments TMS570LC4357

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1055
SPNU563A–March 2018
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High-End Timer (N2HET) Module
23.5.13 HWAG Previous Tooth Period Value Register (HWAPCNT1)
Figure 23-101. HWAG Previous Tooth Period Value Register (HWAPCNT1)
31 24 23 16
Reserved PCNT(n-1)
R-0 R/W-0
15 0
PCNT(n-1)
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 23-65. HWAG Previous Tooth Period Value Register (HWAPCNT1) Field Descriptions
Bit Field Value Description
31-24 Reserved 0 Reads return 0. Writes have no effect.
23-0 PCNT(n-1) 0-FF FFFFh Period (n-1) Value. Gives the period value of the previous tooth.
23.5.14 HWAG Current Tooth Period Value Register (HWAPCNT)
Figure 23-102. HWAG Current Tooth Period Value Register (HWAPCNT)
31 24 23 16
Reserved PCNT(n)
R-0 R/W-0
15 0
PCNT(n)
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 23-66. HWAG Current Tooth Period Value Register (HWAPCNT) Field Descriptions
Bit Field Value Description
31-24 Reserved 0 Reads return 0. Writes have no effect.
23-0 PCNT(n) 0-FF FFFFh Period (n) Value. Provides the current period since the beginning of the last tooth active
edge seen by the HWAG (PCNT (n)).
This period would not be accurate due to the fact that the PCNT counter is running at VCLK2
and that the peripheral bus is running at VCLK. Then, the value will have changed when
used.