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AFE4403EVM FAQs
10
AFE4403EVM FAQs
10.1 EVM communicating with the PC application
A quick and simple check to verify serial register write operation is to put the AFE4403 in power-down
mode. Follow the sequence to check if the GUI is communicating with the EVM.
•
In
Device Configuration
→
Global Settings
tab, select
Powerdown_AFE
•
This powers down the AFE and the VCM output voltage of the AFE drops to 0 V
•
VCM is measured at the VCM_AFE serial jumper resistor R28 on the board
10.2 ADC_RDY signal
After executing the GUI, observe the ADC_RDY waveform at series jumper resistor R26.This should be at
the same frequency as the PRF.
Figure 47
shows the ADC_RDY waveform at 500-Hz PRF.
Figure 47. ADC_RDY Waveform at 500-Hz PRF
41
SLAU572B – June 2014 – Revised July 2014
AFE4403 Development Guide
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