Laird Vela IF820, User Manual

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1” dual row header pins for connecting the module IO pins to on DVK peripherals like LED, button, mikroBus, etc. Jumpers are
installed to work with the on DVK devices or connectors. If the jumpers are removed, then fly leads can be used to connect to
off module circuitry or to other on DVK peripherals as needed.
Since there are two types of Vela IF820 (Antenna type and MHF4 type) modules, two DVK variants are required in order to
match two different Vela IF 820 modules.
Table 3 shows MHF4 type dual row 2.54mm pitch pin header mapping table.
Note 1 : Required for dropping an SPP connection in EZ-Serial transparent parse mode.
Table 4 shows antenna type dual row 2.54mm pitch pin header mapping table.
Table 3: MHF4 type dual row 2.54mm pitch pin header mapping table
Header Connector connector.pin
connect to
IF820 pin
number
IF820 Module pre
defined function
Install jumper
to work with
J1.2 1 BT_DEV_WAKE RP2040
J1.4 2 BT_HOST_WAKE RP2040
J1.6 4 I
2
C_CLK
MikroE socket
and Qwiic
J1.8 5 GPIO (P4 in CYW20820) for LED1
J1.10 6 SWDCLK RP2040
J1.12 7 SPI_CS MikroE socket
J1.14 8 GPIO (P5 in CYW20820) MikroE socket
J1.16 9 GPIO (P8 in CYW20820) MikroE socket
J1.18 14 SWDIO RP2040
J1.20 15 SPI_SCK MikroE socket
J1.22 16 SPI_MISO MikroE socket
J1.24 17 SPI_MOSI MikroE socket
J2.1 no GND no
J2.3 33 BT_UART_RTS RP2040
J2.5 no empty no
J2.7 35 BT_UART_RXD RP2040
J2.9 34 BT_UART_TXD RP2040
J2.11 36 BT_UART_CTS
RP2040 and
recovery button
(SW2)
J2.13 29 I
2
C_DATA
MikroE socket
and Qwiic
J2.15 28
GPIO (P14 in
CYW20820)
MikroE socket
J2.17 27 P_UART_TXD RP2040
J2.19 26 P_UART_RXD RP2040
J2.21 25 GPIO (P0 in CYW20820)
for user button
(SW1)
J2.23 24 RST_L
RP2040 and
reset button
(SW301)
J3.1 23
GPIO (P27 in
CYW20820)
RP2040
J3.3 30
GPIO (P26 in
CYW20820)
MikroE socket
J3.5 22 P_UART_CTS RP2040
J3.7 21 P_UART_RTS RP2040
J3.9 20 CP_ROLE RP2040
J3.11 19 CYSPP/SPP ( Note1 ) RP2040
J3.13 18 LP_MODE RP2040