Artesyn ATCA-7470 Installation and Use (October 2014) - Manual (Page 143)

Maps and Registers
ATCA-7470 Installation and Use (6806800P15K) 143
6.1.2 Intel Cavecreek PCH DH8900CC APIC (D31:F0) Interrupt
Mapping
Table 6-2 APIC Mode Interrupt Mapping
IRQ
Via
SERIRQ Direct from
Pin Via PCI
Message
Interrupt Source
0 No No No Cascade from 8259 1
1 Yes No Yes
2 No No No 8254 Counter 0, Timer 0 (legacy mode)
3 Yes No Yes
4 Yes No Yes
5 Yes No Yes
6 Yes No Yes
7 Yes No Yes
8 No No No RTC, Timer 1 (legacy mode)
9 Yes No Yes Option for TCI, TCO
10 Yes No Yes Option for TCI, TCO
11 Yes No Yes HPET #2, Option for TCI, TCO
12 Yes No Yes HPET #3
13 No No No FERR# logic
14 Yes No Yes SATA Primary (legacy mode)
15 Yes No Yes SATA Secondary (legacy mode)
16 PIRQA# PIRQ[A]# Yes Internal devices are routable
17 PIRQB# PIRQ[B]# Yes Internal devices are routable
18 PIRQC# PIRQ[C]# Yes Internal devices are routable
19 PIRQD# PIRQ[D]# Yes Internal devices are routable
20 N/A PIRQ[E]# Yes Option for SCI, TCO, and HPET #0,1,2,3. For
other internal devices are routable.