Texas Instruments AFE79 Series User Manual

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SBAU337–May 2020
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Serial Interface Register Maps
Table 2-2197. Register 637 Field Descriptions
Bit Field Type Reset Description
0-0
FB_ALC_USE_12B
IT_SEL
R/W 0h
Selects 12 bit or 16 bit output in ALC bypass mode. This
should match with corresponding JESD configuration for 12/16
selection.
Reserved in ALC enabled mode.
0 : 16bit
1 : 12bit
2.14.301 Register 638h (offset = 638h) [reset = 20h]
Figure 2-2184. Register 638h
7 6 5 4 3 2 1 0
FB_ALC_TOTAL_GAIN_RANGE
R/W-20h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-2198. Register 638 Field Descriptions
Bit Field Type Reset Description
6-0
FB_ALC_TOTAL_
GAIN_RANGE
R/W 20h
Total Gain Range to be supported by DGC. Total Gain
Compensation is saturated to this value. Allowable range is 0
to 66 dB, in steps of 1 dB.
2.14.302 Register 639h (offset = 639h) [reset = 0h]
Figure 2-2185. Register 639h
7 6 5 4 3 2 1 0
FB_ALC_SIG_BACKOFF_DB
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-2199. Register 639 Field Descriptions
Bit Field Type Reset Description
4-0
FB_ALC_SIG_BAC
KOFF_DB
R/W 0h
dB setting. Used in coarse/fine mode (both pin and LSB) only
when coarse/fine range is lower than required total gain range.
This should be in sync with FineExpOffset.
2.14.303 Register 63Ah (offset = 63Ah) [reset = 0h]
Figure 2-2186. Register 63Ah
7 6 5 4 3 2 1 0
FB_ALC_GAIN_OFFSET_INPUT_ALC
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-2200. Register 63A Field Descriptions
Bit Field Type Reset Description
2-0
FB_ALC_GAIN_OF
FSET_INPUT_ALC
R/W 0h
Offset to be added to gain compensation if required. Can be
used for optimization. Units is dB

Texas Instruments AFE79 Series Specifications

General

Brand	Texas Instruments
Model	AFE79 Series
Category	Control Unit
Language	English