AN2131-DK001 Cypress Semiconductor Corp, AN2131-DK001 Datasheet - Page 89

• Manufacturer Part Number: AN2131-DK001
• Description: KIT EZ-USB DEVELOPMENT BOARD
• Manufacturer: Cypress Semiconductor Corp

Specifications of AN2131-DK001

• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 428-1333

The configuration descriptor includes a total length field (offset 2-3) that encompasses all
interface and endpoint descriptors that follow the configuration descriptor. This configu-
ration describes a single interface (offset 4). The host selects this configuration by issuing
a Set_Configuration requests specifying configuration #1 (offset 5).
Interface 0, alternate setting 0 describes endpoint 0 only. This is a zero bandwidth setting.
The interface has no string index.
Page 5-14
Offset
Offset
0
1
2
3
4
5
6
7
8
0
1
2
3
4
5
6
7
8
bLength
bDescriptorType
wTotalLength (L)
wTotalLength (H)
bNumInterfaces
bConfigurationValue
iConfiguration
bmAttributes
MaxPower
bLength
bDescriptorType
bInterfaceNumber
bAlternateSetting
bNumEndpoints
bInterfaceClass
bInterfaceSubClass
bInterfaceProtocol
iInterface
Table 5-11. USB Default Interface 0, Alternate Setting 0 Descriptor
Field
Field
Table 5-10. USB Default Configuration Descriptor
Length of this Descriptor = 9 bytes
Descriptor Type = Configuration
Total Length (L) Including Interface and Endpoint Descriptors
Total Length (H)
Number of Interfaces in this Configuration
Configuration Value Used by Set_Configuration Request to
Select this Configuration
Index of String Describing this Configuration = None
Attributes - Bus-Powered, No Wakeup
Maximum Power - 100 mA
Length of the Interface Descriptor
Descriptor Type = Interface
Zero-based Index of this Interface = 0
Alternate Setting Value = 0
Number of Endpoints in this Interface (Not Counting EPO) = 0
Interface Class = Vendor Specific
Interface Sub-class = Vendor Specific
Interface Protocol = Vendor Specific
Index to String Descriptor for this Interface = None
Chapter 5. EZ-USB CPU
Description
Description
Value
Value
EZ-USB TRM v1.9
DAH
09H
02H
00H
01H
01H
00H
80H
32H
09H
04H
00H
00H
00H
FFH
FFH
FFH
00H