The table below summarizes typical LED states that you may encounter during a system’s operation.

Table 3. Slot State Indicators

LED State

Green On Amber Off

Status

The slot is on and functioning normally.

Green On

The slot is on and the card requires attention.

Amber On

 

Green Off

Amber On

Green blinking Amber Off

Off

The slot is off and the card in the slot requires attention.

Slot power is transition from either ON to OFF or OFF to ON.

The slot is powered off.

PCI features include:

33 or 66 MHz bus speed

32-bit or 64-bit memory addressing

3.3V or 5V signaling environment

Independent bus structure supports transfers up to 1.2 GB/sec

8-, 16-, 32-, or 64-bit data transfers

Plug and Play ready

Parity enabled

DesotoE2 Hot-Plug PCI Controller

The DesotoE2 Hot-Plug PCI controller is a 32-bit PCI bus agent that operates at either 33 or

66 MHz. The PCI controller manages PHP functionality for the PCI segment it resides on. There is a DesotoE2 controller on PCI segments A and B. The DesotoE2 PHP controller is:

ACPI compliant

Compatible with Compaq’sPHP controller design

Supports either a 3.3 V or 5 V PCI bus

The DesotoE2 is responsible for:

Managing power application and removal to individual slots

Properly resetting newly-added PCI boards prior to bringing the board online

Managing connection and disconnection of the PCI signals between the P CI bus and the add- in board

Managing seamless addition and removal of individual PCI add-in boards without impacting bus functionality

IDE Interface

The Open South Bridge (OSB4) acts as a PCI-based fast IDE controller. The controller supports programmed I/O and bus master transfers. While the OSB4 supports two IDE channels, the SKA4 baseboard uses only the primary IDE channel and provides a single 40 pin IDE connector.

Baseboard Description

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