Datasheet

SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
1052
38.7.44 PWM Channel Dead Time Update Register
Name: PWM_DTUPDx [x=0..7]
Address: 0x4009421C [0], 0x4009423C [1], 0x4009425C [2], 0x4009427C [3], 0x4009429C [4], 0x400942BC [5],
0x400942DC [6], 0x400942FC [7]
Access: Write-only
This register can only be written if the bits WPSWS4 and WPHWS4 are cleared in “PWM Write Protect Status Register” on
page 1039.
This register acts as a double buffer for the DTH and DTL values. This prevents an unexpected waveform when modifying
the dead-time values.
Only the first 12 bits (dead-time counter size) of fields DTHUPD and DTLUPD are significant.
• DTHUPD: Dead-Time Value Update for PWMHx Output
Defines the dead-time value for PWMHx output. This value must be defined between 0 and CPRD-CDTY (PWM_CPRx
and PWM_CDTYx). This value is applied only at the beginning of the next channel x PWM period.
• DTLUPD: Dead-Time Value Update for PWMLx Output
Defines the dead-time value for PWMLx output. This value must be defined between 0 and CDTY (PWM_CDTYx). This
value is applied only at the beginning of the next channel x PWM period.
31 30 29 28 27 26 25 24
DTLUPD
23 22 21 20 19 18 17 16
DTLUPD
15 14 13 12 11 10 9 8
DTHUPD
76543210
DTHUPD