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# 2.2.3.11 Configuration On MCC

## Number of Endpoints

Symbol name:-CONFIG_USB_DEVICE_ENDPOINTS_NUMBER

This symbol signifies the total number of endpoints utilized by this instance of the device layer.

## USB Controller instance

Symbol name:- USB_DEVICE_INDEX

This symbol signifies which specific instance of the Controller is connected to the current instance of the device layer.

## Vendor ID

Symbol name: CONFIG_USB_DEVICE_VENDOR_ID_IDX0

Here we specify the Vendor ID (VID) to be specified in the Device Descriptor. This should be a value assigned by the USB IF. The value 0x04D8 is assigned to Microchip Technology Inc.

## Product ID Selection

Symbol name: CONFIG_USB_DEVICE_PRODUCT_ID_SELECTION_IDX0

Here we Choose from a list of available demo applications with pre-assigned Product IDs or choose the 'Enter Product ID' option to enter a custom Product ID. This value is then assigned as the PID in the Device Descriptor.

## Product ID

Symbol name: CONFIG_USB_DEVICE_PRODUCT_ID_IDX0

If the Product ID selection is set to a available demo application, then this field is automatically populated with the Product ID of that demo application. If the Product ID selection is set to 'Enter Product ID' option, then enter the 16-bit Product ID in this field.

## Manufacturer String

Symbol name: CONFIG_USB_DEVICE_MANUFACTURER_STRING

Here we specify the Manufacturer String.

## Product String Selection

Symbol Name: CONFIG_USB_DEVICE_PRODUCT_STRING_DESCRIPTOR

If the Product ID selection is set to a available demo application, then this field is automatically populated with the Product String that describes the demo application. If the Product ID selection is set to 'Enter Product ID' option, then enter the Product String in this field.

## Add Device Serial Number

Symbol Name: CONFIG_USB_DEVICE_PRODUCT_STRING_DESCRIPTOR

This option is enabled to add Device Serial Number.

## Serial Number

Symbol Name: CONFIG_USB_DEVICE_SERIAL_NUMBER_STRING_DESCRIPTOR

Enter Device Serial Number here. The Serial Number will be added as a String descriptor table.

## Self Powered

Symbol Name: CONFIG_USB_DEVICE_ATTRIBUTE_SELF_POWERED

Enable this option if the USB Device is Self Powered. If not it implies that the Device is Bus Powered.

## Remote Wakeup Feature

Symbol Name: CONFIG_USB_DEVICE_ATTRIBUTE_REMOTE_WAKEUP

Enable this option if the USB Device supports remote wakeup feature. This informs the Host that the device is capable of generating wakeup signal when the bus is suspended.

## Maximum Power (mA)

Symbol Name: CONFIG_USB_DEVICE_MAX_POWER

Maximum power consumption in mA of the USB device from the bus in this specific configuration when the device is fully operational.

## Number of Endpoints

Symbol Name:-CONFIG_USB_DEVICE_ENDPOINTS_NUMBER

This symbol is used to specify the total number of endpoints used for this instance of the Device layer. Refer to Device Datasheet for details on available endpoints and limitations

## Configuration Descriptor Size

Symbol Name:- CONFIG_USB_DEVICE_CONFIG_DESCRPTR_SIZE

This symbol specifies the size of the configuration descriptor. The default value of this symbol is 9 by default. The USB configuration descriptor is used to describe information such as the power requirements of the device, the number of interfaces it has, and the number of configurations available.

## Enable Interface Association Descriptor(IAD)

Symbol Name:- CONFIG_USB_DEVICE_DESCRIPTOR_IAD_ENABLE

This option is enabled to generate a Interface Association Descriptor (IAD). This option should be enabled in case multiple interfaces are included in the Device. Enabling the option will update the Class, Subclass fields in the Device Descriptor to indicate that the device uses IAD.