AMC1210 Datasheet, PDF (31/47 Pages) Burr-Brown (TI) – Quad Digital Filter for 2nd-Order Delta-Sigma Modulator

AMC1210
www.ti.com
SBAS372A – APRIL 2006 – REVISED OCTOBER 2006
Comparator Filter Parameter Register (addresses 0x06, 0x0C, 0x12 and 0x18)
The Comparator Filter Parameter Register controls several parameters for the comparator filters. It specifies the
oversampling ratio, three interrupt enables and structure control bits. Table 19 shows the Comparator Filter
Parameter Register.
Bit 15
–
Bit 14
–
Bit 13
–
Bit 12
–
Table 19. Comparator Filter Parameter Register
Bit 11
–
Bit 10
–
Bit 9
MFIE
Bit 8
CS1
Bit 7
CS0
Bit 6
IEL
Bit 5
IEH
Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
COSR4 COSR3 COSR2 COSR1 COSR0
'0'
'0'
'0'
'0'
'0'
'0'
'0'
'0'
'0'
'0'
'0'
'0'
'0'
'0'
'0'
'0'
R
R
R
R
R
R
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
BIT POSITION
15–10
9
8–7
6
5
4–0
BIT
–
MFIE
CS1–CS0
IEL
IEH
COSR4–COSR0
DESCRIPTION
Unused. Always read '0'.
Modulator failure interrupt enable.
0: The modulator failure flag as well as the output INT is disabled for this particular flag
1: The modulator failure flag is enabled
Comparator filter structure.
00: Comparator filter runs with a sincfast structure
01: Comparator filter runs with a Sinc¹ structure
10: Comparator filter runs with a Sinc² structure
11: Comparator filter runs with a Sinc³ structure
Low-level interrupt enable.
0: The low-level interrupt flag as well as the output INT is disabled for this particular flag
1: The low-level interrupt flag is enabled
High-level interrupt enable.
0: The high-level interrupt flag as well as the output INT is disabled for this particular flag
1: The high-level interrupt flag is enabled
Oversampling ratio.
These bits set the oversampling ratio of the filter.
0xFF represents an oversampling ratio of 256.
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