Texas Instruments AFE79 Series - 1.4.14 TX Channel Frequency Configuration (Opcode - 0 x30); 1.4.15 RX-FB Nyquist Zone Configuration (Opcode - 0 x33); 1.4.16 TX Nyquist Zone Configuration (Opcode - 0 x34); 1.4.17 Tune System (Opcode - 0 x36)

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SBAU337–May 2020
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Macro
1.4.14 TX Channel Frequency Configuration (Opcode – 0x30)
Band 1 of TX Channels is configured to transmit signal centered at 3500 MHz. Band 2 of TX Channels is
configured to transmit signal centered at 4000 MHz.
Table 1-100.
Operand Value Comments
1 0x0F Configure Common Channel Frequency
for all TX Channels
2 0x00 Single NCO Mode
3 0x003567E0 TX Band 1 frequency of 3500MHz.
3 0x003D0900 TX Band 2 frequency of 4000MHz.
4 0x00000000 Unused
5 0x00000000 Unused
1.4.15 RX-FB Nyquist Zone Configuration (Opcode – 0x33)
The channel frequencies are such that they fall in third Nyquist Zone for both RX and FB Channels.
Table 1-101.
Operand Value Comments
1 0x3F Configure Common Nyquist Band for all
RX and FB Channels
2 0x03 Third Nyquist Band (i.e. RX-ADC-RATE to
3/2*RX-ADC-RATE)
1.4.16 TX Nyquist Zone Configuration (Opcode – 0x34)
The channel frequencies are such that they fall in first Nyquist Zone for TX Channels.
Table 1-102.
Operand Value Comments
1 0x0F Configure Common Nyquist Band for all
TX Channels
2 0x01 First Nyquist Band (i.e. 0 to TX-DAC-
RATE/2)
1.4.17 Tune System (Opcode – 0x36)
All configurations are provided. Now apply these configurations in the device.
Table 1-103.
Operand Value Comments
1 0x3F
2 0x0F
3 0x0000