Cirrus-logic EP93xx Manual do Utilizador Página 736

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24-4 DS785UM1
Copyright 2007 Cirrus Logic
Pulse Width Modulator
EP93xx User’s Guide
2
4
2
4
24
Note: All undefined register bits will be read as 0.
Register Descriptions
PWMxTermCnt
Address:
PWM0TermCnt: 0x8091_0000 - Read/Write
PWM1TermCnt: 0x8091_0020 - Read/Write
Default:
0x0000_0000
Definition:
PWMx Terminal Count
Bit Descriptions:
PWM_TC: PWMxTermCnt is used to adjust the output frequency of
the PWM. PWMxTermCnt gives the PWM up to 16-bit
resolution.
PWMxTermCnt is double buffered to allow it to be
programed statically (PWM is stopped) or dynamically
(PWM is running).
Programmed dynamically, PWMxTermCnt is updated at
the end of a PWM cycle to prevent any output glitches or
errors. Reading the register reflects what was written to it,
not the state of the counter.
PWMxDutyCycle
Address:
PWM0DutyCycle: 0x8091_0004 - Read/Write
PWM1DutyCycle: 0x8091_0024 - Read/Write
Default:
0x0000_0000
Definition:
PWMx Duty Cycle
1514131211109876543210
PWM_TC
1514131211109876543210
PWM_DC
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