2.3GHz to 2.7GHz MIMO Wireless
BroadbandRF Transceiver
Table 9. Register 6: LPF/VGA_2 Register (Address = 00110, Default = 000 HEX )
BIT NAME
BUFF_VCM<1:0>
VGA2<5:0>
LNA2<1:0>
BIT LOCATION
(0 = LSB)
9:8
7:2
1:0
DESCRIPTION
Rx VGA output common-mode voltage select.
00 = 1.05V (default)
01 = 1.15V
10 = 1.25V
11 = 1.45V
Receiver 2 VGA attenuation settings through SPI.
Active when register 8 D<1> = 1.
000000 = Max gain (default)
000001 = Max - 1dB
……….
111110 = Max - 62dB
111111 = Max - 63dB (min gain)
Test at settings 000000, 000001, 001000, 010000, 100000, 110110, and
111111.
Receiver 2 LNA gain settings through SPI.
Active when register 2 D<0> = 1.
00 = Max gain (default)
01 = Max - 8dB
10 = Max - 16dB
11 = Max - 32dB
Table 10. Register 7: RSSI/VGA Register (Address = 00111, Default = 208 HEX )
BIT NAME
RSSI_RXSEL
RESERVED
SEL_IN1_IN2
RESERVED
BIT LOCATION
(0 = LSB)
9
8
7
6:0
DESCRIPTION
RSSI for receiver 1 or 2 select.
0 = RSSI for receiver 2
1 = RSSI for receiver 1 (default)
Reserved bits—set to default
RXBBI output select.
0 = Select Rx VGA output (default)
1 = Select Tx AM detector output
Reserved bits—set to default
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