38.7.5 USBHS Device General Control Register


Bit	31	30	29	28	27	26	25	24

Access
Reset


Bit	23	22	21	20	19	18	17	16
								OPMODE2
Access								R/W
Reset								0


Bit	15	14	13	12	11	10	9	8
	TSTPCKT	TSTK	TSTJ	LS	SPDCONF[1:0]		RMWKUP	DETACH
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	1


Bit	7	6	5	4	3	2	1	0
	ADDEN	UADD[6:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0

Bit 16 – OPMODE2 Specific Operational Mode

Value	Description
0	The UTMI transceiver is in normal operating mode.
1	The UTMI transceiver is in the Disable bit stuffing and NRZI encoding operational mode for test purposes.

Bit 15 – TSTPCKT Test Packet Mode

Value	Description
0	The UTMI transceiver is in normal operating mode.
1	The UTMI transceiver generates test packets for test purposes.

Bit 14 – TSTK Test Mode K

Value	Description
0	The UTMI transceiver is in normal operating mode.
1	The UTMI transceiver generates high-speed K state for test purposes.

Bit 13 – TSTJ Test Mode J

Value	Description
0	The UTMI transceiver is in normal operating mode.
1	The UTMI transceiver generates high-speed J state for test purposes.

Bit 12 – LS Low-Speed Mode Force

This bit can be written even if USBHS_CTRL.USBE = 0 or USBHS_CTRL.FRZCLK = 1. Disabling the USBHS (by writing a zero to the USBHS_CTRL.USBE bit) does not reset this bit.

Value	Description
0	The full-speed mode is active.
1	The low-speed mode is active.

Bits 11:10 – SPDCONF[1:0] Mode Configuration

This field contains the peripheral speed:

Value	Name	Description
0	NORMAL	The peripheral starts in full-speed mode and performs a high-speed reset to switch to high-speed mode if the host is high-speed-capable.
1	LOW_POWER	For a better consumption, if high speed is not needed.
2	HIGH_SPEED	Forced high speed.
3	FORCED_FS	The peripheral remains in full-speed mode whatever the host speed capability.

Bit 9 – RMWKUP Remote Wakeup

This bit is cleared when the USBHS receives a USB reset or once the upstream resume has been sent.

Value	Description
0	No effect.
1	Sends an upstream resume to the host for a remote wakeup.

Bit 8 – DETACH Detach

Note: When operating in high-speed mode, ensure that the device detach (USBHS_DEVCTRL_DETACH = 1) is followed by a USB module disable (USBHS_CTRL.USBE = 0). To re-attach the device, enable the USB module ((USBHS_CTRL.USBE = 1) and then clear the detach bit (USBHS_DEVCTRL_DETACH = 0).