Texas Instruments SimpleLink CC2620 Technical Reference Manual page 1111

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13.5.1.15 TBPR Register (Offset = 3Ch) [reset = 0h]
TBPR is shown in
Timer B Pre-scale
This register allows software to extend the range of the timers when they are used individually.
When in one-shot or periodic down count modes, this register acts as a true prescaler for the timer
counter.
When acting as a true prescaler, the prescaler counts down to 0 before the value in TBR and TBV
registers are incremented.
In all other individual/split modes, this register is a linear extension of the upper range of the timer counter,
holding bits 23:16 in the 16-bit modes of the 16/32-bit GPT.
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
Bit Field
31-8 RESERVED
7-0 TBPSR
SWCU117C – February 2015 – Revised September 2015
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Figure 13-23 and described in
Figure 13-23. TBPR Register
RESERVED
R-0h
Table 13-22. TBPR Register Field Descriptions
Type Reset
R 0h
R/W 0h
Copyright © 2015, Texas Instruments Incorporated
Table 13-22.
9
Description
Software must not rely on the value of a reserved. Writing any other
value than the reset value may result in undefined behavior.
Timer B Pre-scale.
Prescale ratio in one-shot and periodic count mode is TBPSR + 1,
that is:
0: Prescaler ratio = 1
1: Prescaler ratio = 2
2: Prescaler ratio = 3
...
255: Prescaler ratio = 256
General-purpose Timer Registers
8 7 6 5 4 3 2 1
TBPSR
R/W-0h
Timers
0
1111