AT43310 View Datasheet(PDF) - Atmel Corporation
Part Name
Description
Manufacturer
AT43310 Datasheet PDF : 25 Pages
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AT43310
Hub-specific Requests
All required Hub-specific requests are supported by the
AT43310’s Hub Controller. Hub-specific requests or com-
mands are sent from the Host to the AT43310 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. AT43310 is a bus-powered hub with a and
does not report over-current on a global basis.
AT43310 will respond with a STALL if the setup packet
from the Host is:
Field
Value
bmRequestType
Byte 0
x0100000B
bRequest
Byte 1
01H
wValue
Byte 2
0xH
Byte 3
00H
wIndex
Byte 4
00H
Byte 5
00H
wLength
Byte 6
00H
Byte 7
00H
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 AT43310 will return a STALL
status to the host.
CLEAR_PORT Features Table
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
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
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
00H
Byte 7
00H
15
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