Texas Instruments AFE79 Series - 2.3.71 Register 81 h (offset = 81 h) [reset = 3 h]; 2.3.72 Register 82 h (offset = 82 h) [reset = 4 h]

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SBAU337–May 2020
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Serial Interface Register Maps
Table 2-114. Register 7E Field Descriptions
Bit Field Type Reset Description
3-2
LP_FB_ON_C_SE
L_2R1F_AB_MAS
K
R/W 2h
Its a bit mask, used to compute sig-valid as a combination of
fb_on a and c. Used to gate 4 streams of 16b data i.e. output
of 2F mux for 2R1F_AB inst. So, based on the data mux
settings, this mask should be chosen.
11 -> uses or'ed fb_on c,a
01 -> uses or'ed fb_on a
00 -> uses zero
1-0
LP_FB_ON_A_SEL
_2R1F_AB_MASK
R/W 1h
Its a bit mask, used to compute sig-valid as a combination of
fb_on a and c. Used to gate 4 streams of 16b data i.e. output
of 2F mux for 2R1F_AB inst. So, based on the data mux
settings, this mask should be chosen.
11 -> uses or'ed fb_on c,a
01 -> uses or'ed fb_on a
00 -> uses zero
2.3.71 Register 81h (offset = 81h) [reset = 3h]
Figure 2-112. Register 81h
7 6 5 4 3 2 1 0
LP_RX_ON_D_SEL_2R1F_CD_MASK LP_RX_ON_C_SEL_2R1F_CD_MASK
R/W-0h R/W-3h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-115. Register 81 Field Descriptions
Bit Field Type Reset Description
7-4
LP_RX_ON_D_SE
L_2R1F_CD_MAS
K
R/W 0h
FOR LOW POWER CONSUMPTION:
Its a bit mask, used to compute sig-valid as a combination of
rx_on b,a,d,c. Used to gate 4 streams of 16b data i.e. output
of 4R mux for 2R1F_CD inst. So, based on the data mux
settings, this mask should be chosen.
1111 - Uses or'ed rx_on b,a,d,c
0111 - Uses or'ed rx_on a,d,c
0011 - Uses or'ed rx_on d,c
0001 - Uses or'ed rx_on c
0000 - Uses zero
3-0
LP_RX_ON_C_SE
L_2R1F_CD_MAS
K
R/W 3h
FOR LOW POWER CONSUMPTION:
Its a bit mask, used to compute sig-valid as a combination of
rx_on b,a,d,c. Used to gate 4 streams of 16b data i.e. output
of 4R mux for 2R1F_CD inst. So, based on the data mux
settings, this mask should be chosen.
1111 - Uses or'ed rx_on b,a,d,c
0111 - Uses or'ed rx_on a,d,c
0011 - Uses or'ed rx_on d,c
0001 - Uses or'ed rx_on c
0000 - Uses zero
2.3.72 Register 82h (offset = 82h) [reset = 4h]
Figure 2-113. Register 82h
7 6 5 4 3 2 1 0
LP_FB_ON_C_SEL_2R1F_CD_
MASK
LP_FB_ON_A_SEL_2R1F_CD_
MASK
R/W-1h R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset