Table 426. Decfilter_Coefn Field Descriptions - STMicroelectronics SPC572L series Reference Manual

RM0400
Field
Coefficient n field
The COEFn[23:0] bit fields are the digital filter coefficients registers. The coefficients are
fractional signed values in two's complement format, in the range (-1 ≤ coef < 1).
8-31
COEFn[23:0]
Note: Reads to this register are sign-extended, meaning the coefficient's sign bit is copied to all 8
Note: Writing to these fields when BSY=1 is not allowed.
37.3.2.8 Decimation Filter TAPn register (DECFILTER_TAPn)
Address: DECFILTER_BASE + 0x078–0x094
0 1
R
W
Reset 0 0
16 17
R
W
Reset 0 0
Figure 367. Decimation Filter TAPn Register (DECFILTER_TAPn)
Field
The read-only TAPn[23:0] bit fields shows the contents of the digital filter tap registers, as
fractional signed values in two's complement format, in the range (-1 ≤ coef < 1).
8-31
TAPn[23:0] Note: Reads to this register are sign-extended, meaning the coefficient's sign bit is copied to all 8
Note: The content of these registers is meaningless when BSY=1.

Table 426. DECFILTER_COEFn field descriptions

most significant register bits.
2 3 4 5
8{TAPn[23]}
0 0 0 0
18 19 20 21
0 0 0 0
Table 427. DECFILTER_TAPn field descriptions
most significant register bits.
DocID027809 Rev 4
Description
6 7 8 9
0 0 0 0
22 23 24 25
TAPn[15:0]
0 0 0 0
Description
Decimation Filter
Access: User read only
10 11 12 13
TAPn[23:16]
0 0 0 0
26 27 28 29
0 0 0 0
14 15
0 0
30 31
0 0
823/2058
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