Mca; Console Debug Port; I2C; Wireless And Bluetooth - Digi ConnectCore 8X Hardware Design Manuallines And Checklist

Design checklist

MCA

☑ Item
1. MCA_
RESET
2. SWD_
CLK/PWR_IO
3. Isolate
VCC_MCA
power
domains
4. MCA
recovery

Console debug port

☑ Item Description
1. UART2 The default U-Boot loaded in the modules from manufacturing configures the UART2
as the console debug port. This console port can be changed to any other UART in the
system, but Digi recommends you use this UART2 as the console port so no
additional effort (such as compiling a new U-Boot, loading it through USB, etc.) are
required.

I2C

☑ Item
1. I2C pull-
ups

Wireless and Bluetooth

☑ Item
1. Wireless
SDIO
ConnectCore 8X Hardware Design Guidelines
Description
Input reset line of the system. Connect a 100 K pull-up to VCC_MCA.
Input power on/off - suspend line of the system. Connect a 51 K pull-up to VCC_
MCA.
As much as possible, try not to mix the VCC_MCA power domain with the rest of
the power domains of the system.
Digi recommends you enable access to the SWD port of the MCA in the carrier
board. This will allow you to recover the MCA in case its firmware gets corrupted
and the micro-controller can no longer boot.
Description
Add external pull-ups to the clock and data lines of the I2C buses. You will typically
use 4.7K resistors.
Description
Wireless SDIO is not used by the default wireless MAC populated on the
ConnectCore 8X SOM. Leave these pads unconnected: D5, D6, D7, D8, D9, D10,
D11, D12, D13, D14 and G18.
MCA
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