EVK-IRIS-W10 - User guide
UBX-23007837 - R03
Hardware description
Page 20 of 43
C1-Public
To use the MCU-Link as a
SWD
debugging probe for an external MCU through
J20
, populate
R13
,
R43, R68, R217, R224, R290, R292, R294, R296
with 0
Ω
resitors
and disconnect
resistors R44, R45, R48, R116, R117, R119, R291, R293
.
IRIS-W10 GPIO/Function
Connection
MCU-Link pin
GPIO 2/SPI0-MOSI
Not default
60
GPIO 3/SPI0-MISO
Not default
62
GPIO 4/SPI0-CLK
Not default
61
GPIO 5/ SPI0-SSELN1
Not default
74
GPIO 13/SWD-CLK
Default
54
GPIO 14/SWD-SWDIO
Default
81
GPIO 16/FC2-I2C_SDA
Not default
86
GPIO 17/ FC2-I2C_SCL
Not default
76
GPIO 24/UART3-RXD
Default
79
GPIO 26/UART3-TXD
Default
70
Table 6: MCU-Link connections
The SWD programming interface on the MCU-Link connects to the JTAG needle connector
(
J33
) and SWD connector (
J39),
as shown in
R182
forces the chip to ISP mode when populated with a 0402 0R resistor.
LED1
to
LED5
indicate the connection and interfaces status of the chip.
For
minimum interference with the IRIS-W10 radio modules, the MCU-Link (
U13
) is powered
using a separate linear voltage regulator
U20,
as shown in
Optionally,
R211
can be populated with a
1206 0R
resistor to power the MCU-Link chip (
U13
)
from the
3V3
output of the DC-DC converter (
U11),
Figure 21: MCU-Link flashing options