Datasheet

467
SAM7X Series [DATASHEET]
6120K–ATARM–11-Feb-14
If the ADC_CDR is not read before further incoming data is converted, the corresponding Overrun Error (OVRE) flag is
set in the Status Register (ADC_SR).
In the same way, new data converted when DRDY is high sets the bit GOVRE (General Overrun Error) in ADC_SR.
The OVRE and GOVRE flags are automatically cleared when ADC_SR is read.
Figure 35-3. GOVRE and OVREx Flag Behavior
Warning: If the corresponding channel is disabled during a conversion or if it is disabled and then reenabled during a
conversion, its associated data and its corresponding EOC and OVRE flags in ADC_SR are unpredictable.
EOC0
GOVRE
CH0
(ADC_CHSR)
(ADC_SR)
(ADC_SR)
ADTRG
EOC1
CH1
(ADC_CHSR)
(ADC_SR)
OVRE0
(ADC_SR)
Undefined Data Data A
Data B
ADC_LCDR
Undefined Data
Data A
ADC_CDR0
Undefined Data
Data B
ADC_CDR1
Data C
Data C
Conversion
Conversion
Read ADC_SR
DRDY
(ADC_SR)
Read ADC_CDR1
Read ADC_CDR0
Conversion