Samsung S3C2451X User Manual page 320

PWM TIMER
OUTPUT LEVEL CONTROL
Inverter off
Inverter on
The following procedure describes how to maintain TOUT as high or low (assume the inverter is off):
1. Turn off the auto reload bit. And then, the timer is stopped after the TCNTn reaches 0, TOUTn goes to high
level (recommended).
2. Stop the timer by clearing the timer start/stop bit to 0. If TCNTn ≤ TCMPn at that moment, the output level is
high. If TCNTn >TCMPn, the output level is low.
3. The TOUTn can be inverted by the inverter on/off bit in TCON. The inverter removes the additional circuit to
adjust the output level.
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
13-8
Specifications and information herein are subject to change without notice.
Initial State
Figure 13-6. Inverter On/Off
Period 1 Period 2
S3C2451X RISC MICROPROCESSOR
Timer Stop