cExpress-AL
System Resources
45
I/O Address
IOSF Primary
Target
IOSF SB Target
0B8h–0B9h P2SB
ITSS
(interrupt)
0BCh–0BDh P2SB
ITSS
(interrupt)
0C0h–0DFh P2SB
Terminate
0F0h P2SB Terminate
170h–177h P2SB
Terminate
2F8h–2FFh P2SB
Serial
Port
240h–24Fh P2SB
Serial
Port
2F8h–2FFh P2SB
Serial
Port
376h P2SB Terminate
3F6h P2SB Terminate
3F8h–3FFh P2SB
Serial
Port
4D0h–4D1h P2SB
ITSS
(interrupt)
CF9h
P2SB
ITSS (CPU I/F)
6.3.
Interrupt Request (IRQ) Lines
PIC Mode
IRQ#
Typical Intterupt Resource
Connected to Pin
Available
0 Counter
0
N/A
No
1 Keyboard
controller
IRQ1 via SERIRQ
No
2
Cascade interrupt from slave PIC
N/A
No
3
Serial Port 4 (COM3)
IRQ3 via SERIRQ / PIRQ
Note (1)
4
Serial Port 3 (COM4)
IRQ4 via SERIRQ / PIRQ
Note (1)
5
Generic
IRQ5 via SERIRQ / PIRQ
Note (1)
6
Generic
IRQ6 via SERIRQ / PIRQ
No
7
Generic
IRQ7 via SERIRQ / PIRQ
Note (1)
8 Real-time
clock
N/A
No
9 Generic
N/A
Note
(1)
10
Serial Port 1 (COM1)
IRQ10 via SERIRQ / PIRQ
Note (1)
11
Serial Port 2 (COM2)
IRQ11 via SERIRQ / PIRQ
Note (1)
12
PS/2 Mouse
IRQ12 via SERIRQ / PIRQ
Note (1)
13 Math
Processor
N/A
No
14 SATA
Primary
IRQ14 via SERIRQ / PIRQ
Note (1)
15 SATA
Secondary
IRQ15 via SERIRQ / PIRQ
Note (1)
Note (1):
These IRQs can be used for PCI devices when onboard device is disabled.
Summary of Contents for cExpress-AL
Page 8: ...2 Introduction This page intentionally left blank ...
Page 36: ...30 Pinouts and Signal Descriptions This page intentionally left blank ...
Page 44: ...38 Module Interfaces This page intentionally left blank ...
Page 48: ...42 Smart Embedded Management Agent SEMA This page intentionally left blank ...
Page 88: ...82 BIOS Setup This page intentionally left blank ...
Page 98: ...92 BIOS Checkpoints Beep Codes This page intentionally left blank ...