PIC18F4550ESOSQTP datasheet(185/438 Pages) MICROCHIP

185 / 438 page

DS39632E-page 183

PIC18F2455/2550/4455/4550

17.5.2

USB INTERRUPT ENABLE

The USB Interrupt Enable register (Register 17-8)

contains the enable bits for the USB status interrupt

sources. Setting any of these bits will enable the

respective interrupt source in the UIR register.

The values in this register only affect the propagation

of an interrupt condition to the microcontroller’s inter-

rupt logic. The flag bits are still set by their interrupt

conditions, allowing them to be polled and serviced

without actually generating an interrupt.

UIE: USB INTERRUPT ENABLE REGISTER

U-0

R/W-0

—

SOFIE

STALLIE

IDLEIE

TRNIE

ACTVIE

UERRIE

URSTIE

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7

Unimplemented: Read as ‘0’

bit 6

SOFIE: Start-Of-Frame Token Interrupt Enable bit

1 = Start-Of-Frame token interrupt enabled

0 = Start-Of-Frame token interrupt disabled

bit 5

STALLIE: STALL Handshake Interrupt Enable bit

1 = STALL interrupt enabled

0 = STALL interrupt disabled

bit 4

IDLEIE: Idle Detect Interrupt Enable bit

1 = Idle detect interrupt enabled

0 = Idle detect interrupt disabled

bit 3

TRNIE: Transaction Complete Interrupt Enable bit

1 = Transaction interrupt enabled

0 = Transaction interrupt disabled

bit 2

ACTVIE: Bus Activity Detect Interrupt Enable bit

1 = Bus activity detect interrupt enabled

0 = Bus activity detect interrupt disabled

bit 1

UERRIE: USB Error Interrupt Enable bit

1 = USB error interrupt enabled

0 = USB error interrupt disabled

bit 0

URSTIE: USB Reset Interrupt Enable bit

1 = USB Reset interrupt enabled

0 = USB Reset interrupt disabled

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