RM0033 Rev 9 1125/1381
RM0033 USB on-the-go high-speed (OTG_HS)
1260
Bit values in the register descriptions are expressed in binary unless otherwise specified.
OTG_HS control and status register (OTG_HS_GOTGCTL)
Address offset: 0x000
Reset value: 0x0001 0000
The OTG control and status register controls the behavior and reflects the status of the OTG
function of the core.
313029282726252423222120191817161514131211109876543210
Reserved
BSVLD
ASVLD
DBCT
CIDSTS
Reserved
DHNPEN
HSHNPEN
HNPRQ
HNGSCS
Reserved
SRQ
SRQSCS
rrrr rwrwrwr rwr
Bits 31:20 Reserved, must be kept at reset value.
Bit 19 BSVLD: B-session valid
Indicates the peripheral mode transceiver status.
0: B-session is not valid.
1: B-session is valid.
In OTG mode, you can use this bit to determine if the device is connected or disconnected.
Note: Only accessible in peripheral mode.
Bit 18 ASVLD: A-session valid
Indicates the host mode transceiver status.
0: A-session is not valid
1: A-session is valid
Note: Only accessible in host mode.
Bit 17 DBCT: Long/short debounce time
Indicates the debounce time of a detected connection.
0: Long debounce time, used for physical connections (100 ms + 2.5 µs)
1: Short debounce time, used for soft connections (2.5 µs)
Note: Only accessible in host mode.
Bit 16 CIDSTS: Connector ID status
Indicates the connector ID status on a connect event.
0: The OTG_HS controller is in A-device mode
1: The OTG_HS controller is in B-device mode
Note: Accessible in both peripheral and host modes.
Bits 15:12 Reserved, must be kept at reset value.
Bit 11 DHNPEN: Device HNP enabled
The application sets this bit when it successfully receives a SetFeature.SetHNPEnable
command from the connected USB host.
0: HNP is not enabled in the application
1: HNP is enabled in the application
Note: Only accessible in peripheral mode.
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