3.8.1 Device Configuration
| Name: | DEVCFG |
| Offset: | 0x01 |
| Property: | 1 |
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
| SLFPWR | RMTWKP | SNEN | |||||||
| Access | R/W | R/W | R/W | ||||||
| Reset | 0 | 0 | 1 |
Bit 3 – SLFPWR USB Self-Powered Attribute
| Value | Description |
|---|---|
| 0 | Bus-powered: The device draws power from USB VBUS (factory default) |
| 1 |
Self-powered: The device has an external power supply. The VBUS pin must be connected to USB VBUS through a potential divider |
Bit 2 – RMTWKP USB Remote Wake-up Capability
| Value | Description |
|---|---|
| 0 |
No remote wake-up: The device cannot wake the USB host from suspend. The ALRT pins can only wake the MCP2222 device (factory default). |
| 1 |
Remote wake-up enabled: The ALRT pins configured for edge detection and can wake the MCP2222 device as well as the USB host. |
Bit 0 – SNEN USB CDC Serial Number Enable
| Value | Description |
|---|---|
| 0 |
No serial number: The device enumerates without a serial number. Windows may assign different COM ports when the device is connected to different USB ports. |
| 1 |
Serial number enabled: Windows maintains consistent COM port assignment (factory default). |