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參數(shù)資料
| 型號： | AT43312 |
| 廠商： | Atmel Corp. |
| 英文描述： | Self- and Bus- Powered USB Hub Controller |
| 中文描述： | 自和總線供電的USB集線器控制器 |
| 文件頁數(shù)： | 11/21頁 |
| 文件大?。?/td> | 157K |
| 代理商： | AT43312 |
AT43312
11
Endpoint Descriptor
There is no endpoint descriptor for Endpoint0. This descriptor describes the Endpoint1 descriptor which the Hub uses for
status change report.
Hub Descriptor
This descriptor describes the AT43312’s Hub and ports.
Offset
Field
Description
Size (bytes)
Value
0
bLength
Size of this descriptor = 7 bytes.
1
0x07
1
bDescriptorType
Descriptor type = Endpoint
1
0x05
2
bEndpointAddress
The address of the IN endpoint
1
0x81
3
bmAttributes
Transfer Type = Interrupt
1
0x03
4
wMaxPacketSize
Max. packet size Endpoint1 is capable of sending = 1 byte
2
0x01
0x00
6
bInterval
Interval for polling endpoint for data transfers = 256 ms
1
0xFF
Offset
Field
Definition
Size (bytes)
Value
0
bDescLength
Define size of this descriptor = 9 bytes
1
0x09
1
bDescriptor Type
Descriptor Type = HUB_DESCRIPTOR = 29
1
0x29
2
bNbrPorts
Number of downstream ports = 4
1
0x04
3
wHubCharacteristics
Hub's characteristics:
= Individual power switching
= Hub is not part of a compound device
= Individual Port Over-current Protection
2
0x09
0x00
5
bPwrOn2PwrGood
Time from the time power-on sequence begins on a port until power is
good on that port = 100ms.
1
0x32
6
bHubContrCurrent
Maximum current requirements of the hub electronics = 100 mA.
1
0x64
7
DeviceRemovable
Indicates if a port has removeable device. All downstream ports have
removable devices.
1
0x00
8
PortPwrCtrlMask
Indicates if a port is not affected by gang-mode power control request. All
the AT43312’s ports require manual SetPortFeature(PORT_POWER)
request to control the port’s power state.
1
0x1E
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| AT43DK301 | Low-Cost USB Hub Development Kit |
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| AT43USB320A-AC | Full-speed USB Microcontroller with an Embedded Hub |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AT43312(32DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BUS CONTROLLER |
| AT43312(32SOIC) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BUS CONTROLLER |
| AT43312A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:AT43312A [Updated 7/03. 27 Pages] |
| AT43312A_06 | 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Self- and Bus-Bus-powered USB Hub Controller |
| AT43312A-6AC | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:BUS CONTROLLER |
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