Usb 2.0; System Resources - Siemens SIMATIC IPC477E PRO Operating Instructions Manual

9.5.1.6

USB 2.0

USB 2.0 port
Pin no.
1
2
3
4
9.5.2

System resources

All system resources (hardware addresses, memory configuration, allocation of interrupts,
DMA channels) are assigned dynamically by the Windows OS, depending on the hardware
configuration, drivers and connected external devices. You can view the current
configuration of system resources or possible conflicts with the following operating systems:
Windows Embedded Stand-
ard and
Windows 7 Ultimate
The following tables and images describe the system resources for the delivery state of the
device.
The interrupts are assigned to devices by BIOS. There are exclusive non-shared interrupts
for DP12 and the first Ethernet interface.
This means that applications or realtime operating system expansions can operate these
devices exclusively and with high-performance without having to share the interrupt with
other devices.
Interrupt sharing in APIC mode:
Interrupt
IRQ0
IRQ1
IRQ2
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7
IRQ8
SIMATIC IPC477E PRO
Operating Instructions, 08/2017, A5E39912462-AA
Short description
USB_P5V_fused (O)
USB_D0M (I/O)
USB_D0P (I/O)
USB_GND
Start menu "Start": Enter "msinfo32" in the search field and press
"Return" to confirm.
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
Technical specifications
9.5 Hardware descriptions
Meaning
+ 5 V (fused) for external USB interface
Data-, USB channel 0
Data+, USB channel 0
Ground for external USB interface
Interrupt type
ISA exclusive
ISA exclusive
ISA exclusive
ISA exclusive
ISA exclusive (CAN)
ISA exclusive
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