ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
- 447 -
Revision 2.4
BIQ Control Register (BIQ_CTL)
Register
Offset
R/W
Description
Reset Value
BIQ_CTL
0x080
R/W
BIQ Control Register
0x0000_0110
Table 7-24 BIQ Control Register (BIQ_CTL, address 0x400B_0080)
31
30
29
28
27
26
25
24
Reserved
SRDIV[12:8]
23
22
21
20
19
18
17
16
SRDIV[7:0]
15
14
13
12
11
10
9
8
Reserved
STAGE
DPWMPUSR
7
6
5
4
3
2
1
0
PRGCOEFF
SDADCWNSR
DLCOEFF
PATHSEL
HPFON
BIQEN
Bits
Description
[31:12]
Reserved
Reserved
[28:16]
SRDIV
SR Divider
[15:12]
Reserved
Reserved
[11]
STAGE
BIQ Stage Number Control
0 = 6 stage.
1 = 5 stage.
[10:8]
DPWMPUSR
DPWM Path Up Sample Rate (From SRDIV Result)
0001 --- up 1x ( no up sample)
0010 --- up 2x
0011 --- up 3x
0100 --- up 4x
0110 --- up 6x
Others reserved
[7]
PRGCOEFF
Programming Mode Coefficient Control Bit
0 = Coefficient RAM is in normal mode.
1 = coefficient RAM is under programming mode.
This bit must be turned off when BIQEN is on.
[6:4]
SDADCWNSR
SDADC Down Sample
001--- 1x (no down sample)
010 --- 2x
011 --- 3x
100 --- 4x
11 0--- 6x
Others reserved