S5000PAL datasheet(38/112 Pages) INTEL

38 / 112 page

Intel

® Server Board S5000PAL / S5000XAL TPS

Functional Architecture

Revision 1.7

Intel order number: D31979-010

3.5

Super I/O

Legacy I/O support is provided by using a National Semiconductor* PC87427 Super I/O device. This chip

contains all of the necessary circuitry to support the following functions:

•

GPIOs

•

Two serial ports

•

Keyboard and mouse support

•

Wake up control

•

System health support

3.5.1.1

Serial Ports

The server board provides two serial ports: an external RJ45 serial port, and an internal DH10 serial

header.

Serial A is an optional port accessed through a 9-pin internal DH-10 header. A standard DH10 to DB9

cable can be used to direct the Serial A port to the rear of a chassis. The Serial A interface follows the

standard RS232 pin-out as defined in the following table.

Table 7. Serial A Header Pin-out

Signal Name

Serial Port A Header Pin-out

DCD

DSR

RTS

CTS

DTR

GND

The rear RJ45 Serial B port is a fully functional serial port that can support any standard serial device.

Using an RJ45 connector for a serial port allows direct support for serial port concentrators, which

typically use RJ45 connectors and are widely used in the high-density server market. For server

applications that use a serial concentrator to access the system management features of the server

board, a standard 8-pin CAT-5 cable from the serial concentrator is plugged directly into the rear RJ45

serial port.

To allow support for either of two serial port configuration standards, a jumper block located directly

behind the rear RJ45 serial port must be configured appropriately according to the desired standard. For

serial concentrators that require a DCD signal, the jumper block must be configured with the serial port

jumper over pins 1 and 2. For serial concentrators that require a DSR signal (Default), the jumper block

must be configured with the serial port jumper over pins 3 and 4. Pin 1 on the jumper is identified by “*”.

Note:

By default, the rear RJ45 serial port is configured to support a DSR signal. This configuration is

compatible with the Cisco* standard.

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