Chapter 15 Pulse-Width Modulation Subsystem (PWMSS).
Chapter 15 Pulse-Width Modulation Subsystem (PWMSS).
Chapter 15 Pulse-Width Modulation Subsystem (PWMSS).
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Enhanced PWM (ePWM) Module www.ti.com<br />
Table <strong>15</strong>-29. EPWMx Initialization for Figure <strong>15</strong>-31<br />
Register Bit Value Comments<br />
TBPRD TBPRD 600 (258h) Period = 601 TBCLK counts<br />
TBPHS TBPHS 0 Clear Phase Register to 0<br />
TBCNT TBCNT 0 Clear TB counter<br />
TBCTL CTRMODE TB_UPDOWN<br />
PHSEN TB_DISABLE Phase loading disabled<br />
PRDLD TB_SHADOW<br />
SYNCOSEL TB_SYNC_DISABLE<br />
HSPCLKDIV TB_DIV1 TBCLK = SYSCLK<br />
CLKDIV TB_DIV1<br />
CMPA CMPA 350 (<strong>15</strong>Eh) Compare A = 350 TBCLK counts<br />
CMPB CMPB 400 (190h) Compare B = 400 TBCLK counts<br />
CMPCTL SHDWAMODE CC_SHADOW<br />
SHDWBMODE CC_SHADOW<br />
LOADAMODE CC_CTR_ZERO Load on CTR = 0<br />
LOADBMODE CC_CTR_ZERO Load on CTR = 0<br />
AQCTLA CAU AQ_SET<br />
CAD AQ_CLEAR<br />
AQCTLB CBU AQ_CLEAR<br />
CBD AQ_SET<br />
Table <strong>15</strong>-30. EPWMx Run Time Changes for Figure <strong>15</strong>-31<br />
Register Bit Value Comments<br />
CMPA CMPA Duty1A Adjust duty for output EPWM1A<br />
CMPB CMPB Duty1B Adjust duty for output EPWM1B<br />
1660 <strong>Pulse</strong>-<strong>Width</strong> <strong>Modulation</strong> <strong>Subsystem</strong> (<strong>PWMSS</strong>) SPRUH73E–October 2011–Revised May 2012<br />
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