NXP Semiconductors LPC1311 User Manual

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User manual Rev. 3 — 14 June 2011 177 of 368
NXP Semiconductors
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Chapter 11: LPC13xx USB on-chip drivers
Table 191. HID descriptors
Field Value Description
HID configuration descriptor
bLength 0x09 Descriptor size in bytes
bDescriptorType 0x02 The constant Configuration (0x02)
wTotalLength 0x0029 Size of all data returned for this configuration in bytes
bNumInterfaces 0x01 Number of interfaces the configuration supports
bConfigurationValue 0x01 Identifier for Set_Configuration and Get_Configuration
requests
iConfiguration 0x00 Index of string descriptor for the configuration
bmAttributes 0xc0 Self/Bus power, Remote wakeup
bMaxPower 0x32 Bus Power required, expressed as (max mA/2)
HID interface descriptor
bLength 0x09 Descriptor size in bytes
bDescriptorType 0x04 The constant Interface (0x04)
bInterfaceNumber 0x00 Number identifying this interface
bAlternateSetting 0x00 Value used to select an alternate setting
bNumEndpoints 0x02 Number of endpoints supported
bInterfaceClass 0x03 Class code, Human Interface
bInterfaceSubClass 0x00 Sublass code, None
bInterfaceProtocol 0x00 Protocol code, None
iInterface 0x62 Index of string descriptor for the interface
HID class descriptor
bLength 0x09 Descriptor size in bytes
bDescriptorType 0x21 The constant HID class (0x21)
bcdHID 0x0100 HID specification release number (BCD)
bCountryCode 0x00 Country identifier
bNumDescriptors 0x01 Number of subordinate class descriptors supported
bDescriptorType 0x22 The type of class descriptor, HID Report
wDescriptorLength 0x001b Total length of report descriptor
HID interrupt IN descriptor
bLength 0x07 Descriptor size in bytes
bDescriptorType 0x05 The constant Endpoint (0x05)
bEndpointAddress 0x81 Endpoint number and direction
bmAttributes 0x03 Transfer type supported, Interrupt
wMaxPacketSize 0x0040 Maximum packet size supported
bInterval User Defined Polling interval (Provided by the Application Software)
HID interrupt OUT descriptor
bLength 0x07 Descriptor size in bytes
bDescriptorType 0x05 The constant Endpoint (0x05)
bEndpointAddress 0x01 Endpoint number and direction
bmAttributes 0x03 Transfer type supported, Interrupt
wMaxPacketSize 0x0040 Maximum packet size supported

NXP Semiconductors LPC1311 Specifications

General

Brand	NXP Semiconductors
Model	LPC1311
Category	Controller
Language	English