STMicroelectronics SPC572L series Reference Manual page 815

RM0400
Table 421. DECFILTER_MCR field descriptions(Continued)
Field
Input Buffer Interrupt Request Flag
The IBIF bit flag indicates that the input buffer DECFILTER_IB is available to be filled with new
data, when Enhanced Debug Monitor is off. In Enhanced Debug Monitor, it indicates the input
buffer DECFILTER_IB was filled with a new sample and is ready to be read. IBIF assertion also
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asserts the interrupt signal when enabled by the IBIE bit in the Configuration Register when DMA
is not selected (DSEL=0) and the input buffer requires access from the device slave-bus (ISEL !=
IBIF
EDME). This Flag is cleared by the IBIC Status bit or by a soft reset of the decimation filter.
0 No action
1 New Sample is requested (ISEL = 1, EDME=0) or new sample is available in Enhanced Debug
Monitor (ISEL=0, EDME=1).
Output Buffer Interrupt Request Flag
The OBIF bit flag indicates that a new decimated sample is available at the DECFILTER_OB
register. This flag generates an Interrupt Request if enabled by the OBIE bit in the Configuration
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Register and with DSEL=0. This Flag is cleared by the OBIC Status bit or by a soft reset of the
OBIF
decimation filter.
0 No new Decimated Output available
1 New Decimated Output available
27 Reserved
28 Reserved
Filter Overflow Flag
The OVF bit indicates that an overflow occurred in the filtered sample result. This flag generates
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an Interrupt Request if enabled by the ERREN bit in the Configuration Register. This Flag is
cleared by the OVFC Status bit or by a soft reset of the decimation filter.
OVF
0 No overflow
1 Overflow occurred
Output Interface Buffer Overrun
The OVR bit indicates that a decimated sample was overwritten by a new sample in the Interface
Output Buffer Register. This flag generates an Interrupt Request if enabled by the ERREN bit in
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the Configuration Register. This Flag is cleared by the OVRC Status bit or by a soft reset of the
OVR
decimation filter.
0 No Output Overrun
1 Filter Output Overrun occurred
Input Interface Buffer Overrun
The IVR bit indicates that a received sample in the Filter Interface Input Register was overwritten
by a new sample. This was probably caused by a violation of the Decimation Filter maximum
throughput. This flag generates an Interrupt Request if enabled by the ERREN bit in the
Configuration Register. This Flag is cleared by the IVRC Status bit or by a soft reset of the
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decimation filter.
IVR
0Input Buffer Overrun did not occur
1Input Buffer Overrun occurred
Note: IVR does not set due to input register writes when input is disabled (DECFILTER_MCR bit
IDIS=1).
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Description
Decimation Filter
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