I/O Address Areas; Overview Of The Internal Module Registers - Siemens SIMATIC IPC427E Operating Instructions Manual

Technical specifications
8.6 Hardware descriptions
Interrupt sharing in APIC mode:
Interrupt
IRQ0
IRQ1
IRQ2
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7
IRQ8
IRQ9
IRQ10
IRQ11
IRQ12
IRQ13
IRQ14
IRQ15
IRQ16
IRQ17
IRQ18
IRQ19
IRQ20
IRQ21
IRQ22
IRQ23
8.6.4

I/O Address Areas

8.6.4.1

Overview of the internal module registers

The following addresses are used for the internal registers:
Addresses
I/O 062h
I/O 066h
I/O 404Eh - 404Fh
I/O 404Dh
102
HPET (High Precision Event Timer), when HPET is
enabled in the BIOS "Advanced" menu.
System Timer, when HPET is disabled.
Free
Interrupt controller 2
Com Port 2 (COM2)
Com Port 1 (COM1)
Free
Free
Free
System CMOS / real-time clock
ACPI-SCI (system control interrupt)
Free
SMBUS
NVRAM (optional)
Free
Numeric data processor
Free
Free
High Definition Audio Controller
SATA AHCI Controller
LAN1 (I219-LM)
Graphics Management Engine Interface
USB XHCI Controller
PCIe-x4 slot on Riser
PCIe-x1 slot on Riser
LAN2 (I210)
LAN3 (I210) (optional)
Free
Free
Free
Free
Input/output unit
Watchdog enable register / 066h select register (Page 103)
Watchdog trigger register (read only, address 066h) (Page 103)
Output register LED 1/2/3 and SF LED / RUN/STOP LED (Page 104)
Battery status register (read-only) (Page 104)
Interrupt type
ISA exclusive
ISA exclusive
ISA exclusive
ISA exclusive
ISA exclusive
PCI shared
ISA exclusive
PCI shared
PCI exclusive
PCI shared
PCI exclusive
Operating Instructions, 02/2021, A5E37454814-AE
SIMATIC IPC427E