Datasheet

Intel

Atom™ Processor E6xx Series Datasheet

5.3.1.2 Variable I/O Address Range

Table 38 shows the variable I/O decode ranges. They are set using base address

registers (BARs) or other configuration bits in various configuration spaces. The PnP

software (PCI or ACPI) can use their configuration mechanisms to set and adjust these

values.

Warning: The variable I/O ranges should not be set to conflict with the fixed I/O ranges. There

will be unpredictable results if the configuration software allows conflicts to occur. The

Intel

Atom™ Processor E6xx Series does not check for conflicts.

5.3.2 PCI Devices and Functions

The Intel

Atom™ Processor E6xx Series incorporates a variety of PCI devices and

functions, as shown in Table 39.

74h RTC NMI and RTC No

75h RTC RTC No

76h RTC NMI and RTC No

77h RTC RTC No

84h-86h Internal Internal No

88h Internal Internal No

8Ch-8Eh Internal Internal No

A0h-ACh 8259 Slave 8259 Slave No

B0h 8259 Slave 8259 Slave No

B2h-B3h Power Management Power Management No

B4h-BCh 8259 Slave 8259 Slave No

3B0h-3BBh VGA VGA Yes

3C0h-3DFh VGA VGA Yes

CF8h, CFCh Internal Internal No

CF9h Reset Generator Reset Generator No

Table 37. Fixed I/O Range Decoded by the Processor (Sheet 2 of 2)

I/O Address Read Target Write Target Can be disabled?

Table 38. Variable I/O Range Decoded by the Processor

Range Name Mappable Size (bytes) Target

ACPI P_BLK Anywhere in 64k I/O space 16 Power Management

SMBus Anywhere in 64k I/O space 32 SMB Unit

GPIO Anywhere in 64k I/O space 64 GPIO

Table 39. PCI Devices and Functions (Sheet 1 of 2)

Bus: Device: Function # Functional Description

Bus 0: Device 0: Function 0 Host Bridge

Bus 0: Device 2: Function 0 Integrated Graphics and Video Device

Bus 0: Device 3: Function 0 SDVO Display Unit

Bus 0: Device 23: Function 0 PCI Express* Port 0

Bus 0: Device 24: Function 0 PCI Express* Port 1