PIC18F2450/4450
2006 Microchip Technology Inc.
Advance Information
DS39760A-page 145
14.5.2
USB INTERRUPT ENABLE
REGISTER (UIE)
The USB Interrupt Enable register (Register 14-8)
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
interrupt logic. The flag bits are still set by their
interrupt conditions, allowing them to be polled and
serviced without actually generating an interrupt.
REGISTER 14-8:
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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