Intel E3815 FH8065301567411 Data Sheet
Product codes
FH8065301567411
PCU – iLB – GPIO
Intel
®
Atom™ Processor E3800 Product Family
Datasheet
4575
39.6
GPIO Registers
Registers are broken into two groups: memory mapped and legacy IO registers.
Memory mapped registers are used by BIOS and firmware to select the configurable
function of the GPIO and setup analog states needed for that function’s operation. They
are named based on the pin/ball name. Legacy IO registers are the more traditional
GPIO control/status type, and are used when the function selected is a traditional GPIO
(direction, level, use registers). They are numbered based on the GPIO number.
Memory mapped registers are used by BIOS and firmware to select the configurable
function of the GPIO and setup analog states needed for that function’s operation. They
are named based on the pin/ball name. Legacy IO registers are the more traditional
GPIO control/status type, and are used when the function selected is a traditional GPIO
(direction, level, use registers). They are numbered based on the GPIO number.
Figure 138.SIO - I
2
C Register Map
LPC PCI
Header
D:31,F:0
PMC BAR
ACPI BAR
IO BAR
ILB BAR
IO Space
Legacy GPIO
Registers
SPI BAR
GPIO BAR
LPC PCI
Header
D:31,F:0
PMC BAR
ACPI BAR
GPIO BAR
ILB BAR
Memory
Space
Memory
GPIO
Registers
SPI BAR
IO BAR