參數(shù)資料
型號(hào)： AT43311
廠商： Atmel Corp.
英文描述： USB Hub
中文描述： USB集線器
文件頁(yè)數(shù)： 15/24頁(yè)
文件大?。?/td> 136K
代理商： AT43311
AT43311
15
Hub-specific Requests
All required Hub-specific requests are supported by the
AT43311’s Hub Controller. Hub-specific requests or com-
mands are sent from the Host to the AT43311 using the
default pipe (Endpoint0). Hub-specific requests are made
using control transfers. The request and request parame-
ters are sent in a setup packet consisting of eight bytes.
Clear_Hub_Feature
Clear_Hub_Feature resets a value reported in the Hub
Controller status. The status relates to the local power and
over current. AT43311 is a self-powered hub with a bus-
powered SIE and does not report over-current on a global
basis.
The Hub Controller will disable the reporting of Local Power
Status (C_HUB_LOCAL_POWER) if the setup packet from
the Host is decoded as:
AT43311 will respond with a STALL if the setup packet
from the Host requests the Hub Controller to clear the Over
Current Indicator (C_HUB_OVER_CURRENT):
Clear_Port_Feature
Clear_Port_Feature disables a port feature. Note that only
the relevant Clear Port commands are supported (see
CLEAR_PORT Features Table).
For example, the PORT_LOW_SPEED value is determined
by the operation of the port of the attached device. Upon an
invalid request (e.g. a CLEAR_PORT request for
PORT_LOW_SPEED), the AT43311 will return a STALL
status to the host.
CLEAR_PORT Features Table
The Hub Controller will respond to a Clear Port Feature
request if the setup packet from the Host is decoded as:
Field
Value
bmRequestType
Byte 0
x0100000B
bRequest
Byte 1
01BH
wValue
Byte 2
Byte 3
00H
00H
wIndex
Byte 4
Byte 5
00H
00H
wLength
Byte 6
Byte 7
00H
00H
Field
Value
bmRequestType
Byte 0
x0100000B
bRequest
Byte 1
01H
wValue
Byte 2
Byte 3
01H
00H
wIndex
Byte 4
Byte 5
00H
00H
wLength
Byte 6
Byte 7
00H
00H
Port Feature
ClearPort
Feature
SetPort
Feature
PORT_CONNECTION
N
N
PORT_ENABLE
Y
Y
PORT_SUSPEND
Y
Y
PORT_OVER_CURRENT
Y
N
PORT_RESET
N
Y
PORT_POWER
Y
Y
PORT_LOW_SPEED
N
N
Field
Value
bmRequestType
Byte 0
x0100011B
bRequest
Byte 1
01H
wValue
Byte 2
Byte 3
See Port
Feature
Selector Table
wIndex
Byte 4
Byte 5
Port
Number
wLength
Byte 6
Byte 7
00H
00H
相關(guān)PDF資料
PDF描述
AT43312A-AC Self- and Bus-Bus-powered USB Hub Controller
AT43312A-AU Self- and Bus-Bus-powered USB Hub Controller
AT43312A-SC Self- and Bus-Bus-powered USB Hub Controller
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AT43312 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:Self- and Bus- Powered USB Hub Controller
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