Intel E3815 FH8065301567411 Data Sheet

Intel

®

 Atom™ Processor E3800 Product Family

4290

Datasheet

The Platform Controller Unit (PCU) is a collection of HW blocks that are critical for 
implementing a Windows* compatible platform. These HW blocks include:

•

•

— For boot FW and system configuration data Flash storage

•

PCU – Universal Asynchronous Receiver/Transmitter (UART)PCU – System 
Management Bus (SMBus)

•

The PCU also implements some high level configuration features for BIOS/EFI boot.

The key features of the individual blocks are as follows:

•

Universal Asynchronous Receiver/Transmitter (UART)

— 16550 controller compliant

— Reduced Signal Count: TX and RX only

— COM1  interface

•

Serial Peripheral Interface (SPI)

— For one or two SPI Flash, of up to 16MB size each, only. No other SPI peripherals 

are supported.

— Stores boot FW and system configuration data

Platform Control Unit

UAR

T

LP

C

GP
IO

RT
C

HP
E

T

82
5

9

AP
IC

82
5

4

SMB

iLB

SPI

PM
C

I

O

I

O

I

O

I

O

I

O

I

O

I

O

O