PIC18F2455_09 Datasheet, PDF (185/438 Pages) Microchip Technology – 28/40/44-Pin,High-Performance,Enhanced Flash,USB Microcontrollers with nanoWatt Technology

PIC18F2455/2550/4455/4550
17.5.2 USB INTERRUPT ENABLE
REGISTER (UIE)
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.
REGISTER 17-8: UIE: USB INTERRUPT ENABLE REGISTER
U-0
—
bit 7
R/W-0
SOFIE
R/W-0
STALLIE
R/W-0
IDLEIE
R/W-0
TRNIE
R/W-0
ACTVIE
R/W-0
UERRIE
R/W-0
URSTIE
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘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
© 2009 Microchip Technology Inc.
DS39632E-page 183