Single Converter Mode - 2.6 English

Zynq UltraScale+ RFSoC RF Data Converter v2.6 Gen 1/2/3/DFE LogiCORE IP Product Guide (PG269)

Document ID
PG269
Release Date
2024-05-30
Version
2.6 English

When multi-tile synchronization (MTS) is not supported all the converters are independent. An NCO update state machine is instantiated for each converter. Before a NCO update can be performed the event source must be set to Tile. See Dynamic Update Events for more information on setting the event source.

The process for updating the NCO settings is shown below.

Figure 1. Single Converter NCO Update
  1. Firstly the required frequency, phase, and phase reset values are set on the real-time NCO signal interface ports.
  2. The update enable port is set to indicate which converter register values are to be updated.
  3. A pulse is then sent to the update request port. If the IP state machine has completed the start up process the access to the requested NCO registers commences.
  4. The busy signal remains High until the NCO update process is complete. The frequency, phase, and phase reset values should be held until the busy signal is deasserted.
    An estimate of the number of s_axi_aclk cycles taken to write the NCO values into the converter registers (T1) is given in the following tables for different values of nco_update_en.
    Table 1. NCO Update Times
    nco_update_en RF-DAC / Quad RF-ADC Dual RF-ADC
    000001 26 45
    000010 24 43
    000011 29 51
    000100 24 43
    000101 31 55
    000110 27 49
    000111 32 57
    001000 24 43
    001001 31 55
    001010 29 53
    001011 34 61
    001100 27 49
    001101 34 61
    001110 30 55
    001111 35 63
    010000 24 43
    010001 31 55
    010010 29 53
    010011 34 61
    010100 29 53
    010101 36 65
    010110 32 59
    010111 37 67
    011000 27 49
    011001 34 61
    011010 32 59
    011011 37 67
    011100 30 55
    011101 37 67
    011110 33 61
    011111 38 69
    100000 22 43
    100001 29 53
    100010 27 53
    100011 32 59
    100100 27 53
    100101 34 63
    100110 30 59
    100111 35 65
    101000 27 53
    101001 34 63
    101010 32 63
    101011 37 69
    101100 30 59
    101101 37 69
    101110 33 65
    101111 38 71
    110000 25 49
    110001 32 59
    110010 30 59
    110011 35 65
    110100 30 59
    110101 37 69
    110110 33 65
    110111 38 71
    111000 28 55
    111001 35 65
    111010 33 65
    111011 38 71
    111100 31 61
    111101 38 71
    111110 34 67
    111111 39 73