DSA Page 1 Register Map
598
SBAU337 – May 2020
Copyright © 2020, Texas Instruments Incorporated
Serial Interface Register Maps
Table 2-1128. Register D8 Field Descriptions
Bit
Field
Type
Reset
Description
0-0
DSA_LNA_SW_M
ODE
R/W
0h
If this is enabled- LNA dsa switch can happen through a single
register program. In this mode after a programmable dsa gain,
LNA switch automatically happens.
2.10.13 Register D9h (offset = D9h) [reset = 28h]
Figure 2-1119. Register D9h
7
6
5
4
3
2
1
0
DSA_LNA_SW_THRESH
R/W-28h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-1129. Register D9 Field Descriptions
Bit
Field
Type
Reset
Description
5-0
DSA_LNA_SW_TH
RESH
R/W
28h
The threshold at which dsa gain switches to LNA. This is
applicable only DSA_LNA_SW_MODE is set to 1.
2.10.14 Register DAh (offset = DAh) [reset = 1Eh]
Figure 2-1120. Register DAh
7
6
5
4
3
2
1
0
LNA_ATTEN_VALUE
R/W-1Eh
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-1130. Register DA Field Descriptions
Bit
Field
Type
Reset
Description
5-0
LNA_ATTEN_VAL
UE
R/W
1Eh
The external LNA attenuation value in half db steps. 15 db is
the default.
The value is required to correctly determine the dsa steps
whenever LNA switch is triggered.
2.10.15 Register DCh (offset = DCh) [reset = 0h]
Figure 2-1121. Register DCh
7
6
5
4
3
2
1
0
PIN_AGC_G6_
EN
R/W-0h
LEGEND: R/W = Read/Write; W = Write only; -n = value after reset
Table 2-1131. Register DC Field Descriptions
Bit
Field
Type
Reset
Description
0-0
PIN_AGC_G6_EN
R/W
0h
Enables the 0.5dB step for 8-pin mode. If not set the
resolution for 8-pin agc mode is 1dB.