Table 421. Decfilter_Mcr Field Descriptions - STMicroelectronics SPC572L series Reference Manual

RM0400
37.3.2.2 Decimation Filter Module Status Register (DECFILTER_MSR)
Address: DECFILTER_BASE + 0x004
0 1
R BSY 0
W
Reset 0 0
16 17
R 0 0
W
Reset 0 0
Figure 361. Decimation Filter Status Register (DECFILTER_MSR)
Field
Decimation Filter Busy indication
The BSY bit indicates that the Decimation Filter is processing new input data from the master
0
block in normal mode or from the device core in standalone mode. BSY is not asserted when the
filter is disabled (FTYPE = 00). However, the BSY bit is asserted when the soft reset is executed.
BSY
0 Decimation Filter Idle
1 Decimation Filter Busy
1 Reserved
Decimation Counter
The DEC_COUNTER[3:0] field indicates the current value of the DEC_COUNTER Decimation
2-5
Counter (see
DEC_COUNTE
Decimation Filter. When the value of this counter matches the DEC_RATE[3:0] Configuration
R[3:0]
Register field, one decimated result is generated and the DEC_COUNTER counter is re-
initialized at zero. This register is cleared by a soft reset or a flush command.
Input Data Flag Clear bit
The IDFC bit clears the IDF Flag bit in the Status Register. This bit is self negated, therefore it is
6
always read as zero.
IDFC
0 No action
1 Clears IDF
Output Data Flag Clear bit
The ODFC bit clears the ODF Flag bit in the Status Register. This bit is self negated, therefore it
7
is always read as zero.
ODFC
0 No action
1 Clears ODF
8 Reserved
Input Buffer Interrupt Request Clear bit
The IBIC bit clears the IBIF Flag bit in the Status Register. This bit is self negated, therefore it is
9
always read as zero.
IBIC
0 No action
1 Clears IBIF
2 3 4 5
DEC_COUNTER[3:0]
0 0 0 0
18 19 20 21
0 0 0 0
0 0 0 0

Table 421. DECFILTER_MCR field descriptions

Figure 359), which counts the number of input data samples received by the
DocID027809 Rev 4
6 7 8 9
0 0 0 0
IDFC IBIC OBIC
0 0 0 0
22 23 24 25
IDF ODF 0 IBIF OBIF
0 0 0 0
Description
Decimation Filter
Access: User read/write
10 11 12 13
0 0 0 0
0 0 0 0
26 27 28 29
0 0 OVF OVR IVR
0 0 0 0
14 15
0 0
IVRC
0 0
30 31
0 0
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