UR7HCTS2-U860 查看數據表（PDF） - Semtech Corporation
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UR7HCTS2-U860 Datasheet PDF : 12 Pages
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USB FUNCTIONALITY
The ScreenCoderTM USB is a low-
speed USB device with remote
wake-up capability. The IC asks
the system to send report requests
every 10ms according to USB
specification for low speed device.
The ScreenCoderTM USB describes
itself as a pointer, and provides
absolute position data to the
system.
USB DESCRIPTORS
Offset Part
Size
Device Descriptor
0
bLength
1
1
bDescriptonType 1
2
bcdUSB
2
3
bDeviceClass
1
4
bDeviceSubClass 1
5
bDeviceProtocol 1
6
bMaxPacketSize0 1
8
idVendor
2
10
idProduct
2
12
bcdDevice
2
14
iManufacture
1
15
iProduct
1
16
iSerialNumber
1
17
bNum-
1
Configuration Descriptor
0
bLength
1
1
bDescriptorType 1
2
wTotalLength
2
4
bNumInterface 1
5
bConfigurationValue1
6
iConfiguration
1
7
bmAttribute
1
8
MaxPower
1
Interface Descriptor
0
bLength
1
1
bDescriptorType 1
2
bInterfaceNumber 1
3
bAlternateSetting 1
4
bNumEndpoints 1
5
bInterfaceClass 1
6
bInterfaceSubClass 1
7
bInterfaceProtocol 1
8
iInterface
1
HID Descriptor
0
bLength
1
1
bDescriptorType 1
2
bcdHID
2
4
bCountryCode 1
5
bNumDescriptor 1
6
bDescriptorType 1
7
wDescriptorLength 2
Value Description
0x12
0x01
0x0100
0x00
0x00
0x00
0x08
0x047A
0x0004
0x0061
0x04
0x0E
0x00
0x01
Numeric expression specifying the size of
device descriptor
Device descriptor type
USB HID spec release number 01.00
Class code
Sub class code
Protocol code
Maximum packet size for EP0
USAR's vendor ID
USAR ScreenCoderTM USB Product ID
Device release number
Index of string descriptor describing
manufacturer
Index of string descriptor describing
product
Index of String descriptor describing
serial number
Number of possible configurations
0x09
0x02
0x0022
0x01
0x01
0x00
0xA0
0x32
Size of configuration descriptor in bytes
Configuration (assigned by USB)
Total length of data returned for this
Number of interfaces supported by this
configuration
Current configuration value
Configuration string descriptor index
Configuration characteristics - bus
powered, with remote wakeup
Maximum power consumption of USB
device 100 mA
0x09
0x04
0x00
0x00
0x01
0x03
0x00
0x02
0x00
Size of Interface descriptor in bytes
Interface descriptor type
Number of interface
Number of alternate setting
Number of endpoint
Class code (HID)
Subclass code (nor boot interface
subclass)
Protocol code = mouse
Index of string descriptor describing this
interface
0x09
0x21
0x0100
0x00
0x01
0x22
0x0038
Size of HID descriptor in byte
HID descriptor type
HID Spec release number
Hardware target country
Number of HID class descriptor follow
Report descriptor type
Total length of report descriptor
Copyright Semtech 2000-2001
5
DOC7-TS2-U860-DS-101
www.semtech.com
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