MAX32600 User’s Guide
Analog Front End
8.2 AFE Reconfiguration Matrix
• 0: Disabled
• 1: Output powers down in milliseconds instead of seconds. Must be reset to 0 before the ref is re-powered on using refadc_outen. Can also be used to improve
the REFADC slew rate (when lowering the adcrefsel setting) by setting to 1 for 10ms.
AFE_CTRL1.refdac_fast_pwrdn_en
Field
Bits
Default
Access
Description
refdac_fast_pwrdn_en
4
0
R/W
DAC Reference Fast Powerdown En-
able
• 0: Disabled
• 1: Output powers down in milliseconds instead of seconds. Must be reset to 0 before the ref is re-powered on using refdac_outen. Can also be used to improve
the REFDAC slew rate (when lowering the dacrefsel setting) by setting to 1 for 10ms.
AFE_CTRL1.bgextsel
Field
Bits
Default
Access
Description
bgextsel
5
0
R/W
ADC/DAC Reference Select
Selects reference used for REFADC and REFDAC:
• 0: Internal bandgap used
• 1: External REFADJ input used
AFE_CTRL1.adcrefsel
Field
Bits
Default
Access
Description
adcrefsel
7:6
00b
R/W
ADC Reference Voltage Select
Rev.1.3 April 2015
Maxim Integrated
Page 371