Chapter 10 Analog-to-Digital Converter (ADC12B_LBA_V1)
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
Freescale Semiconductor
411
10.7.3
ADC Error and Conversion Flow Control Issue Interrupt
The ADC provides one error interrupt for four error classes related to conversion interrupt overflow,
command validness, DMA access status and Conversion Flow Control issues, and CSL failure. The
following error interrupt flags belong to the group of severe issues which cause an error interrupt if enabled
and cease ADC operation:
•
IA_EIF
•
CMD_EIF
•
EOL_EIF
•
TRIG_EIF
In order to make the ADC operational again, an ADC Soft-Reset must be issued which clears the above
listed error interrupt flags.
NOTE
It is important to note that if flag DBECC_ERR is set, the ADC ceases
operation as well, but does not cause an ADC error interrupt. Instead, a
machine exception is issued. In order to make the ADC operational again an
ADC Soft-Reset must be issued.
Remaining error interrupt flags cause an error interrupt if enabled, but ADC continues operation. The
related interrupt flags are:
•
RSTAR_EIF
•
LDOK_EIF
•
CONIF_OIF
