Intel E3815 FH8065301567411 Data Sheet
Product codes
FH8065301567411
Mapping Address Spaces
Intel
®
Atom™ Processor E3800 Product Family
74
Datasheet
4.1.2
IO Fabric (MMIO) Map
Memory accesses targeting MMIO are routed by the IO fabric to programmed PCI
ranges, or routed to the PCU by default (subtractive agent). Programmed PCI ranges
can be moved within low or high MMIO, and most can be disabled.
ranges, or routed to the PCU by default (subtractive agent). Programmed PCI ranges
can be moved within low or high MMIO, and most can be disabled.
Note:
Not all devices can be mapped to high MMIO.
Fixed MMIO is claimed by the Platform Controller Unit (PCU). The default regions are
listed below. Movable ranges are not shown. See the register maps of all PCU devices
for details.
listed below. Movable ranges are not shown. See the register maps of all PCU devices
for details.
The following PCI devices may claim memory resources in MMIO space:
•
Graphics/Display (High MMIO capable)
•
PCI Express* (High MMIO capable)
•
SATA
•
SD/MMC/SDIO
•
SIO
•
HD Audio
•
Platform Controller Unit (PCU) (Multiple BARs)
•
xHCI USB
•
EHCI USB
•
USB Device
•
LPE/I
2
S
•
ISP/MIPI-CSI
See each device’s interface chapter for details.
Warning: Variable memory ranges should not be set to conflict with other memory ranges. There
will be unpredictable results if the configuration software allows conflicts to occur.
Hardware does not check for conflicts.
Hardware does not check for conflicts.
Table 42. Fixed Memory Ranges in the Platform Controller Unit (PCU)
Device
Start
Address
End
Address
Comments
Low BIOS (Flash Boot)
000E0000h
000FFFFFh
Starts 128 KB below 1 MB; Firmware/
BIOS
BIOS
IO APIC
FEC00000h
FEC00040h
Starts 20 MB below 4 GB
HPET
FED40000h
FED40FFFh
Starts 19 MB below 4 GB
TPM (LPC)
FFD40000h
FFD40FFFh
Starts 16 KB above HPET range
High BIOS/Boot Vector
FFFF0000h
FFFFFFFFh
Starts 64 KB below 4 GB; Firmware/
BIOS
BIOS