Texas Instruments AFE79 Series - 1.2.4 TX GAIN CONTROL; 1.2.4.1 TX Attenuation Update Trigger Macro

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SBAU337–May 2020
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Macro
Table 1-55. (continued)
Operand Value Comments
3 0x00 RESERVED
3 0x00 RESERVED
4 0x00000000 RESERVED
5 0x00 RESERVED
6 0x00000000 RESERVED
1.2.4 TX GAIN CONTROL
1.2.4.1 TX Attenuation Update Trigger Macro
This macro call will result in an update of the attenuation of the chosen TX channel(s).
Table 1-56.
Macro TX Attenuation Update Trigger
Opcode 0x51
Operand Offset Length Value Functionality Results
1 0x00 1 TX Side Select 0x0 → Select TX
from TX12.
0x1 → Select TX
from TX34.
2 0x01 1 Attenuation Validity 4-bit field
Bit[0] → 1:
Attenuation Setting
A0 is valid.
Bit[1] → 1:
Attenuation Setting
A1 is valid.
Bit[2] → 1:
Attenuation Setting
A2 is valid.
Bit[3] → 1:
Attenuation Setting
A3 is valid.
3 0x02 2 Attenuation A0 Attenuation value
(in steps of 0.125
dB) for Band1 of the
first TX in the
selected TX side
(e.g. if TX Side
Select is 0, this
corresponds to
1TX). E.g. field
value of 10 implies
1.25 dB attenuation.
Attenuation > 39 dB
is NOT allowed.
4 0x04 2 Attenuation A1 Attenuation value
(in steps of 0.125
dB) for Band2 of the
first TX in the
selected TX side
(e.g. if TX Side
Select is 0, this
corresponds to
1TX). E.g. field
value of 10 implies
1.25 dB attenuation.
Attenuation > 39 dB
is NOT allowed.