NEC switch - Manual (Page 164)

CHAPTER 11 INTERRUPT FUNCTIONS
User’s Manual U12978EJ3V0UD
164
Table 11-1. Interrupt Source List
Type of Interrupt Priority Note 1 Interrupt Source
Name Trigger
Nonmaskable - INTWDT Watchdog timer overflow (when
watchdog timer mode 1 is selected)
Internal 0004H (A)
Maskable 0 INTWDT Watchdog timer overflow (when
interval timer mode is selected)
(B)
1 INTUSBTM USB timer overflow 0006H (B)
2 INTUSBRT EOP detection when a USB token
packet is received
0008H
3 INTUSBRD EOP detection when a USB
data/handshake packet is received
000AH
4 INTUSBST EOP detection when a USB data/
handshake packet is transmitted
000CH
5 INTUSBRE Detection of transition from J state
to K state or SE0 on the USB bus
000EH
6 INTP0 Detection of a pin input edge External 0010H (C)
7 INTCSI10 End of three-wire SIO bus interface
transmission and reception
Internal 0012H (B)
8 INTTM00 Generation of the 8-bit timer 00
match signal
0014H
9 INTTM01 Generation of the 8-bit timer/event
counter 01 match signal
0016H
10 INTKR00 Detection of the key return signal External 0018H (C)
Notes 1. The priority is the order of priority when multiple maskable interrupts are generated simultaneously. 0
is the highest priority and 10 is the lowest.
2. Types (A) to (C) in the basic configuration correspond to (A) to (C) in Figure 11-1, respectively.
Remark Only one of the two watchdog timer interrupt (INTWDT) sources, non-maskable or maskable (internal),
can be selected.
Internal/
External
Vector
Table
Address
Basic
Configuration
Type Note 2