AT90USB646 datasheet(265/459 Pages) ATMEL

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265

7593H–AVR–11/08

ATmega32U6/AT90USB64/128

• 4 – HNPERRE: HNP Error Interrupt Enable Bit

Set to enable the HNPERRI interrupt. Clear to disable the HNPERRI interrupt.

• 3 – ROLEEXE: Role Exchange Interrupt Enable Bit

Set to enable the ROLEEXI interrupt. Clear to disable the ROLEEXI interrupt.

• 2 – BCERRE: B-Connection Error Interrupt Enable Bit

Set to enable the BCERRI interrupt. Clear to disable the BCERRI interrupt.

• 1 – VBERRE: VBus Error Interrupt Enable Bit

Set to enable the VBERRI interrupt. Clear to disable the VBERRI interrupt.

• 0 – SRPE: SRP Interrupt Enable Bit

Set to enable the SRPI interrupt. Clear to disable the SRPI interrupt.

• 7-6 - Reserved

The value read from these bits is always 0. Do not set these bits.

• 5 – STOI: Suspend Time-out Error Interrupt Flag

Set by hardware when a time-out error (more than 150 ms) has been detected after a suspend.

Shall be cleared by software.

• 4 – HNPERRI: HNP Error Interrupt Flag

Set by hardware when an error has been detected during the protocol. Shall be cleared by

software.

• 3 – ROLEEXI: Role Exchange Interrupt Flag

Set by hardware when the USB controller has successfully swapped its mode, due to an HNP

negotiation: Host to Device or Device to Host. However the mode selection bit (Host/Device) is

unchanged and must be changed by firmware in order to reach the correct RAM locations and

events bits. Shall be cleared by software.

• 2 – BCERRI: B-Connection Error Interrupt Flag

Set by hardware when an error occur during the B-Connection (i.e. if Peripheral has not con-

nected after 300ms of Vbus delivery request). Shall be cleared by software.

• 1 – VBERRI: V-Bus Error Interrupt Flag

Set by hardware when a drop on VBus has been detected. Shall be cleared by software.

• 0 – SRPI: SRP Interrupt Flag

Set by hardware when a SRP has been detected. Shall be used in the Host mode only. Shall be

cleared by software.

Bit

765

STOI

HNPERRI

ROLEEXI

BCERRI

VBERRI

SRPI

OTGINT

Read/Write

R/W

Initial Value

AT90USB646 Datasheet(PDF) 265 Page - ATMEL Corporation

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