Texas Instruments OMAP5912 Reference Manual page 1034

Table 28. Access Types (Posted Mode vs Nonposted Mode) for Various Clock
Selections
Timer Clock CONF_MOD_GPTIMER_CLK_SEL = 00
Selection
Timer clock System clock =
frequency 12 MHz
Access type Posted mode
Action to be Software must read
taken by the pending write
software before status bits (timer
next write to write posted status
timer register bits [4:0]) to
ensure that
following write
access is not
discarded because
of ongoing write
synchronization
process.
SPRU759B
The selection is done in configuration. Refer to the MOD_CONF_CTRL_1
description for additional information.
Table 28 lists the access types for various clock selections, and Figure 4
shows the dual-mode timer.
System clock =
19.2 MHz
Nonposted mode
None
CONF_MOD_GPTIM- CONF_MOD_GPTIM-
ER_CLK_SEL = 10 ER_CLK_SEL = 01
External timer clock = 32 kHz
20 MHz
Nonposted mode Posted mode
None Software must read
the pending write
status bits (timer
write posted status
register bits [4:0]) to
ensure that following
write access is not
discarded because of
ongoing write
synchronization
process.
Dual-Mode Timer
Timers 31