TMS320F28P650DK: CMPSS DAC Vref

Vivek T S

Prodigy 40 points

Part Number: TMS320F28P650DK

hi,

For TMS320F28P650DK how do i control the DAC reference voltage in CMPSS module ?

The TRM says to use COMPDACCTL[SELREF] for it (page 3550 & 3103).

CMPSS_REGS does not have this COMPDACCTL register (3559).

The COMPDACHCTL and COMPDACLCTL for the separate high and low comparator units does not have this SELREF bit.

thank you

over 2 years ago

0 Hadi Moradisizkoohi over 2 years ago

TI__Expert 7100 points

Hello Vivek,

Thank you for your patience.

There is a register COMPDACCTL[SELREF] for controlling the voltage reference of the CMPSS DAC. By mistake, it was hidden in the last TRM release. We've updated the TRM register section.

Regards,

Hadi

0 Vivek T S over 2 years ago in reply to Hadi Moradisizkoohi

Prodigy 40 points

HI Hadi,

Can you share the link to the updated document.

0 Vivek T S over 2 years ago in reply to Vivek T S

Prodigy 40 points

or at least the register information if that is going to be in a separate release.

+1 Hadi Moradisizkoohi over 2 years ago in reply to Vivek T S

TI__Expert 7100 points

Vivek,

It's going to be available in next release around November.

This is the register view:

SELREF is the bit field you can use to select the reference.

Regards,

Hadi

0 Vivek T S over 2 years ago in reply to Hadi Moradisizkoohi

Prodigy 40 points

Thank you, Hadi.

can you please share the address also for this particular register.

0 Hadi Moradisizkoohi over 2 years ago in reply to Vivek T S

TI__Expert 7100 points

. It has the same address as COMPDACHCTL Register. Please refer to the COMPDACHCTL Register given in page 3566 of TRM.

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TMS320F28P650DK: CMPSS DAC Vref