2.3GHz to 2.7GHz MIMO Wireless
Broadband RF Transceiver
Table 6. Register 3: RX_RF/LPF Register (Address = 00011, Default = 1B9 HEX )
BIT NAME
RESERVED
BIT LOCATION
(0 = LSB)
9:0
Reserved bits—set to default
DESCRIPTION
Table 7. Register 4: LPF Register (Address = 00100, Default = 3E6 HEX )
BIT NAME
FT<3:0>
RESERVED
BIT LOCATION
(0 = LSB)
9:6
5:0
DESCRIPTION
RF channel bandwidth select.
Test at RFBW 5MHz, 10MHz, and 28MHz.
0000 = 1.75MHz
0001 = 2.5MHz
0010 = 3.5MHz
0011 = 5.0MHz
0100 = 5.5MHz
0101 = 6.0MHz
0110 = 7.0MHz
0111 = 8.0MHz
1000 = 9.0MHz
1001 = 10.0MHz
1010 = 12.0MHz
1011 = 14.0MHz
1100 = 15.0MHz
1101 = 20.0MHz
1110 = 24.0MHz
1111 = 28.0MHz (default)
Reserved bits—set to default
Table 8. Register 5: LPF/VGA_1 Register (Address = 00101, Default = 100 HEX )
BIT NAME
RESERVED
VGA1<5:0>
LNA1<1:0>
BIT LOCATION
(0 = LSB)
9:8
7:2
1:0
DESCRIPTION
Reserved bits—set to default
Receiver 1 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 1 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
26
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