TMDSCNCD263P: Using VCC_1V8_LDO4 as ADC VREF

Tool/software:

Hi,

My customer wants to use VCC_1V8_LDO4 as ADC reference on TMDSCNCD263P board.
Below is Figure 2-36 in users guide (spruj86c). He set SW7 Pin1-2 position and SW9 Pin2-3 & Pin5-6 position.


SDK example "adc_burst_mode_oversampling_am263px-cc_r5fss0-0_nortos_ti-arm-clang" was used for evaluation and below error was generated.
[Cortex_R5_0] ASSERT: 0.862s: syscfg/ti_drivers_config.c:System_init:224: SOC_getAdcReferenceStatus(0) == true failed !!!

The users guide also says below. Could you tell me how to modify SDK example to use VCC_1V8_LDO4 as reference?


Thanks and regards,
Koichiro Tashiro