USBHS_CTRL

General Control Register

  0x0800 32 Read/Write 0x03004000  
Parent topic: Register Summary

General Control Register

Bit  31 30 29 28 27 26 25 24  
              UIMOD UID  
Access                   
Reset              1 1  
Bit  23 22 21 20 19 18 17 16  
                   
Access                   
Reset                   
Bit  15 14 13 12 11 10 9 8  
  USBE FRZCLK           VBUSHWC  
Access                   
Reset  0 1           0  
Bit  7 6 5 4 3 2 1 0  
        RDERRE          
Access                   
Reset        0          

Bit 4 – RDERRE: Remote Device Connection Error Interrupt Enable

Remote Device Connection Error Interrupt Enable

ValueDescription
0

The Remote Device Connection Error Interrupt (USBHS_SR.RDERRI) is disabled.
1

The Remote Device Connection Error Interrupt (USBHS_SR.RDERRI) is enabled.

Bit 8 – VBUSHWC: VBUS Hardware Control

VBUS Hardware Control

Must be set to ‘1’.

ValueDescription
0

The hardware control over the VBOF output pin is enabled. The USBHS resets the VBOF output pin when a VBUS problem occurs.
1

The hardware control over the VBOF output pin is disabled.
0

The hardware control over the PIO line is enabled. The USBHS resets the PIO output pin when a VBUS problem occurs.
1

The hardware control over the PIO line is disabled.

Bit 14 – FRZCLK: Freeze USB Clock

Freeze USB Clock

This bit can be written even if USBE = 0. Disabling the USBHS (by writing a zero to the USBE bit) does not reset this bit, but it freezes the clock inputs whatever its value.

ValueDescription
0

The clock inputs are enabled.
1

The clock inputs are disabled (the resume detection is still active). This reduces the power consumption. Unless explicitly stated, all registers then become read-only.

Bit 15 – USBE: USBHS Enable

USBHS Enable

Writing a zero to this bit resets the USBHS, disables the USB transceiver, and disables the USBHS clock inputs. Unless explicitly stated, all registers then become read-only and are reset.

This bit can be written even if FRZCLK = 1

ValueDescription
0

The USBHS is disabled.
1

The USBHS is enabled.

Bit 24 – UID: UID Pin Enable

UID Pin Enable

Must be set to ‘0’.

Bit 25 – UIMOD: USBHS Mode

USBHS Mode

0 (HOST): The module is in USB Host mode.

1 (DEVICE): The module is in USB Device mode.

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