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PRELIMINARY
Document #: 38-08037 Rev. *D Page 18 of 23
ClearTTBuffer 00100011B 0x08 Dev_Addr, EP_Num TT_Port 0x0000 None
ResetTT 00100000B 0x09 0x0000 Byte 0: 0x00
Byte 1: Port
0x0000 None
GetTTState 10100011B 0X0A TT_Flags Byte 0: 0x00
Byte 1: Port
TT State
Length
TT State
StopTT 00100011B 0x0B 0x0000 Byte 0: 0x00
Byte 1: Port
0x0000 None
Vendor Commands
Read EEPROM 11000000B 0x02 0x00 0x00 Length Data
This request results in Length bytes of Data being read from the external memory device, and returned to the host. Data is read
beginning with address 0. This request will fail if there is no external memory device present. This request is only valid if the hub
is in the Configured state; the request will fail otherwise.
Write EEPROM 01000000B 0x01 0x00 0x00 Length Data
This request results in Length bytes of Data being written to the external memory device. Data is written beginning with address
0. This request will fail if there is no external memory device present. This request is only valid if the hub is in the Configured
state; the request will fail otherwise.
Table 10-2. Hub Class Requests (continued)
Request bmRequestType bRequest wValue wIndex wLength Data
Table 10-3. Hub Class Feature Selector
Feature Selector Recipient Value
C_HUB_LOCAL_POWER Hub 0
C_HUB_OVER_CURRENT Hub 1
PORT_CONNECTION Port 0
PORT_ENABLE Port 1
PORT_SUSPEND Port 2
PORT_RESET Port 4
PORT_POWER Port 8
PORT_LOW_SPEED Port 9
C_PORT_CONNECTION Port 16
C_PORT_ENABLE Port 17
C_PORT_SUSPEND Port 18
C_PORT_OVER_CURRENT Port 19
C_PORT_RESET Port 20
PORT_TEST Port 21
PORT_INDICATOR Port 22
Table 10-4. Test Mode Selector for Feature Selector
PORT_TEST (0x21)
[15]
PORT_TEST Mode Description Selector Value
Test_J 1
Test_K 2
Test_SE0_NAK 3
Test_Packet 4
Test_Force_Enable 5
Table 10-5. Port Indicator Selector for Feature Selector PORT_INDICATOR (0x22)
Port Indicator Color Selector Value Port Indicator Mode
Color Set Automatically as shown in Table 5-1 0 Automatic Mode
Amber 1 Manual Mode
Green 2 Manual Mode
Off 3 Manual Mode
Note:
15. Selector values for different features are presented in Table 10-4.