Datasheet

N2HET Control Registers www.ti.com
Table 23-14. Global Configuration Register (HETGCR) Field Descriptions (continued)
Bit Field Value Description
0 TO Turn On/Off
When TO = 0, the timer program stops executing. Turn-off is automatically delayed until the
current timer program loop is completed. Turn-off does not affect the content of the timer RAM,
ALU registers, or control registers. Turn-off resets all flags.
TO does not affect the state of the pins. You must set/reset the timer pins when they are turned
off, or re-initialize the timer RAM and control registers before a reset. After a device reset, the
timer is turned off by default.
When TO = 1, timer program execution starts synchronously to the Loop clock. In case of
multiple N2HETs configuration, the slave N2HETs are waiting for the loop clock to come from
the master before starting execution. Then, the timer address points automatically address 00h
(corresponding to program start).
0 N2HET is OFF.
1 N2HET is ON.
23.4.2 Prescale Factor Register (HETPFR)
N2HET1: offset = FFF7 B804h; N2HET2: offset = FFF7 B904h
Figure 23-36. Prescale Factor Register (HETPFR)
31 17 16
Reserved
R-0
15 11 10 8 7 6 5 0
Reserved LRPFC Reserved HRPFC
R-0 R/WP-0 R-0 R/WP-0
LEGEND: R/W = Read/Write; R = Read only; WP = Write in privileged mode only; -n = value after reset
Table 23-15. Prescale Factor Register (HETPFR) Field Descriptions
Bit Field Value Description
31-11 Reserved 0 Read returns 0. Writes have no effect.
10-8 LRPFC Loop Resolution Pre-scale Factor Code
LRPFC determines the loop resolution prescale divide rate (lr). See Table 23-5.
7-6 Reserved 0 Read returns 0. Writes have no effect.
5-0 HRPFC High Resolution Pre-scale Factor Code
HRPFC determines the high resolution prescale divide rate (hr). See Table 23-5.
970
High-End Timer (N2HET) Module SPNU562–May 2014
Submit Documentation Feedback
Copyright © 2014, Texas Instruments Incorporated