Samsung S5PC100, Руководство пользователя

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S5PC100 USER’S MANUAL (REV1.0) USB2.0 HS OTG
8.10-23
These registers are available in both Host and Device modes, and not required to be reprogrammed to switch
between these modes.
8.2.5 OTG Control and Status Register (GOTGCTL, R/W, Address = 0xED20_0000)
The OTG Control and Status register controls the behavior and reflects the status of the OTG function of the core.
GOTGCTL Bit Description R/W Reset
Value
Reserved [31:20] - 12'h0
BSesVld [19] B-Session Valid
Indicates the Device mode transceiver status.
•
1'b0 : B-session is not valid
•
1'b1 : B-session is valid
R 1'b0
ASesVld [18] A-Session Valid
Indicates the Host mode transceiver status.
•
1'b0 : A-session is not valid
•
1'b1 : A-session is valid
R 1'b0
DbncTime [17] Long/ Short Debounce Time
Indicates the Debounce time of a detected connection.
•
1'b0 : Long Debounce time, used for physical connections
•
1'b1 : Short Debounce time, used for soft connections
R 1'b0
ConIDSts [16] Connector ID Status
Indicates the connector ID status.
•
1'b0 : The OTG core is in A-device mode
•
1'b1 : The OTG core is in B-device mode
R 1'b1
Reserved [15:12] - 4'h0
DevHNPEn [11] Device HNP Enable
The application sets the bit if it successfully receives a SetFeature.
•
1'b0 : HNP is not enabled in the application
•
1'b1 : HNP is enabled in the application
R/W 1'b0
HstSet
HNPEn [10] Host Set HNP Enable
The application sets this bit if it has successfully enabled HNP on
the connected device.
•
1'b0 : Host Set HNP is not enabled
•
1'b1 : Host Set HNP is enabled
R/W 1'b0
HNPReq [9] HNP Request
The application sets this bit to initiate an HNP request to the
connected USB host. The core clears this bit if the
HstNegSucStsChng bit is cleared.
•
1'b0 : No HNP request
•
1'b1 : HNP request
R/W 1'b0