Texas Instruments AFE79 Series - 1.4 Example Macro Call Sequence; 1.4.1 System Channel Configuration (Opcode - 0 x21); 1.4.2 ADC Select Configuration (Opcode - 0 x20); 1.4.3 TDD Configuration (Opcode - 0 x22)

Example Macro Call Sequence www.ti.com
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SBAU337–May 2020
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Macro
3. Active Trigger
a. Trigger can be provided through GLBL_PDN pin or Macro
b. In case of pin, the fall edge will be used for Active operation
c. In case of macro:
i. Sleep/Active Trigger (Opcode – 0x57)
Table 1-86.
Operand Value Comments
1 0x00 Perform activate operation
1.4 Example Macro Call Sequence
This section shows the macro call sequence for a dual band 4T-4R-2F TDD use-case, where the FB
channel and RX channel share the same ADC. It is assumed that the interface rate for RX channels is
245.76 MHz and for TX and FB Channels to be 491.52 MHz. The ADC sampling rates are chosen to be
2949.12 MHz and the DAC sampling rate is 11796.48 MHz. Further, it is assumed that Band 1 Channel
Frequency is 3500 MHz and Band 2 Channel Frequency 4000 MHz.
1.4.1 System Channel Configuration (Opcode – 0x21)
Table 1-87.
Operand Value Comments
1 0x0F Enable all 4 RX Channels
2 0x03 Enable all 2 FB Channels
3 0x0F Enable all 4 TX Channels
1.4.2 ADC Select Configuration (Opcode – 0x20)
Table 1-88.
Operand Value Comments
1 0x25 For 1FB and 1RX use ADC 2. For 2RX
use ADC3.
2 0x25 For 2FB and 3RX use ADC 5. For 4RX
use ADC6.
1.4.3 TDD Configuration (Opcode – 0x22)
Table 1-89.
Operand Value Comments
1 0x00 Configure entire device in TDD mode
1.4.4 System Bands Configuration (Opcode – 0x23)
Table 1-90.
Operand Value Comments
1 0xFF Configure Common Setting for all RX and
TX Channels