MEC1404 Datasheet, PDF (303/572 Pages) Microchip Technology – Keyboard and Embedded Controller Products for Notebook PC

MEC140X/1X
19.9.2 RTOS TIMER PRE-LOAD
OFFSET ^04h
BITS
DESCRIPTION
TYPE
DEFAULT
RESET
EVENT
31:0
Timer Pre-Load Count Value
R/W
This is the pre load value for the counter.
This value is loaded in the timer counter after setting the Timer
Start bit or when the counter reloads if the Auto Reload bit is set.
0h
nSYSR
ST
Note:
Note:
This register must be programmed with new Pre-Load
count value before Timer Start bit is enabled. If this
sequence is not followed, the new Pre-Load count value
will only take effect when the counter expires if the Auto
Reload bit is set.
Programming this register with 0’s will disable the
counter and clear the “start” bit if set.
19.9.3 TIMER CONTROL
OFFSET ^08h
BITS
DESCRIPTION
31:5
4
3
RESERVED
Firmware Timer Halt
This bit gives the firmware the ability to halt the counter without
the use of the hardware Halt signal.
0: Do not halt the counter
1: Halt the counter
Ext Hardware Halt Enable
0: Do not allow hardware Halt signal to stop the counter.
1: Allow hardware Halt signal to stop the counter.
TYPE
RES
R/W
DEFAULT
RESET
EVENT
-
-
0h
nSYSR
ST
R/W
0h
nSYSR
ST
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DS00001956D-page 303