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Download S3C2440 data sheet
Transcript
PWM TIMER S3C2440A RISC MICROPROCESSOR OUTPUT LEVEL CONTROL Inverter off Inverter on Initial State Period 1 Period 2 Timer Stop Figure 10-6. Inverter On/Off 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, TOUTn goes to high level and the timer is stopped after the TCNTn reaches 0 (recommended). 2. Stop the timer by clearing the timer start/stop bit to 0. If TCNTn ¡ TCMPn, 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. 10-8
