3.4 Wire the DKs together

Serial Modem Host Applications

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Serial Modem Host Applications
  1. Power off both DKs.
  2. Connect the eight wires from the table for your host DK.

    nRF54L15 DK:

    nRF54L15 DK nRF9151 DK Signal
    P0.00 P0.26 UART TX → RX
    P0.01 P0.27 UART RX ← TX
    P0.02 P0.15 UART RTS → CTS
    P0.03 P0.14 UART CTS ← RTS
    P1.11 P0.31 DTR
    P1.12 P0.30 RI
    P1.10 P5 pin 5 nRESET
    GND GND Ground

    nRF54LM20B DK:

    nRF54LM20B DK nRF9151 / SMA DK Signal
    P1.14 P0.26 UART TX → RX
    P1.15 P0.27 UART RX ← TX
    P1.23 P0.15 UART RTS → CTS
    P1.24 P0.14 UART CTS ← RTS
    P1.11 P0.31 (P3) DTR
    P1.12 P0.30 (P3) RI
    P1.10 P5 pin 5 nRESET
    GND GND Ground
  3. For Wi-Fi location, mount the nRF7002-EB II on the P17 expansion header of the nRF54LM20B DK.

  4. Power on both DKs.