Datasheet

Section 14 Universal Serial Bus (USB)
Rev.7.00 Dec. 24, 2008 Page 486 of 698
REJ09B0074-0700
14.3.22 USB Interrupt Select Register 0 (UISR0)
UISR0 sets EXIRQ to output interrupt request indicated in the interrupt flag register 0 (UIFR0).
When a bit in UIER0 corresponding to the UISR0 bit is cleared to 0, an interrupt request is output
from EXIRQ0. When a bit in UIER0 corresponding to the UISR0 bit is set to 1, an interrupt
request is output from EXIRQ1.
Bit Bit Name Initial Value R/W Description
7 BRSTS 0 R/W Selects the BRST interrupt.
6 — 0 R Reserved
This bit is always read as 0.
5 EP3TRS 0 R/W Selects the EP3TR interrupt.
4 EP3TSS 0 R/W Selects the EP3TS interrupt
3 EP0oTSS 0 R/W Selects the EP0oTS interrupt.
2 EP0iTRS 0 R/W Selects the EP0iTR interrupt.
1 EP0iTSS 0 R/W Selects the EP0iTS interrupt.
0 SetupTSS 0 R/W Selects the SetupTS interrupt.
14.3.23 USB Interrupt Select Register 1 (UISR1)
UISR1 sets EXIRQ to output interrupt request indicated in the interrupt flag register 1 (UIFR1).
When a bit in UIER1 corresponding to the UISR1 bit is cleared to 0, an interrupt request is output
from EXIRQ0. When a bit in UIER1 corresponding to the UISR1 bit is set to 1, an interrupt
request is output from EXIRQ1.
Bit Bit Name Initial Value R/W Description
7 to 4 — All 0 R Reserved
These bits are always read as 0.
3 — 0 R/W Reserved
The write value should always be 0.
2 EP2READYS 0 R/W Selects the EP2READY interrupt.
1 EP1TRS 0 R/W Selects the EP1TR interrupt.
0 EP1EMPTYS 0 R/W Selects the EP1EMPTY interrupt.