Samsung T1000LM026 사용자 설명서
Spinpoint M8U-Internal Product Manual REV 3.4
67
INSTALLATION
Table 6-7: Standard Request Codes
Table 6-8: Descriptor Types
Feature selectors are used when enabling or setting features, such as remote wakeup, specific to a device,
interface, or endpoint. The values for the feature selectors are given in Table 6-9.
interface, or endpoint. The values for the feature selectors are given in Table 6-9.
Table 6-9: Standard Feature Sectors
If an unsupported or invalid request is made to a USB device, the device responds by returning STALL in the
Data or Status stage of the request. If the device detects the error in the Setup stage, it is preferred that the
device returns STALL at the earlier of the Data or Status stage. Receipt of an unsupported or invalid request
does NOT cause the optional Halt feature on the control pipe to be set. If for any reason, the device becomes
unable to communicate via its Default Control Pipe due to an error condition, the device must be reset to
clear the condition and restart the Default Control Pipe.
Data or Status stage of the request. If the device detects the error in the Setup stage, it is preferred that the
device returns STALL at the earlier of the Data or Status stage. Receipt of an unsupported or invalid request
does NOT cause the optional Halt feature on the control pipe to be set. If for any reason, the device becomes
unable to communicate via its Default Control Pipe due to an error condition, the device must be reset to
clear the condition and restart the Default Control Pipe.
6.3.6.3.2
Clear Feature (Request Code 1)
This request is used to clear or disable a specific feature.
Feature selector values in wValue must be appropriate to the recipient. Only device feature selector values
may be used when the recipient is a device, only interface feature selector values may be used when the
may be used when the recipient is a device, only interface feature selector values may be used when the