cs5535 National Semiconductor Corporation, cs5535 Datasheet

cs5535

Manufacturer Part Number

cs5535

Description

Geode Cs5535 Companion Multi-function South Bridge

Manufacturer

National Semiconductor Corporation

Datasheet

1.CS5535.pdf (555 pages)

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Geode™ CS5535 I/O Companion

Multi-Function South Bridge

General Description

The National Semiconductor

plete I/O companion for an integrated processor North

Bridge component such as the Geode GX2 processor

series. Together, the GX2 and CS5535 provide a system-

level solution well suited for the high-performance and low-

power needs of a host of information appliances that

include digital set-top boxes, personal access devices, and

thin client applications.

The internal architecture has been greatly simplified over

previous I/O companions by use of a single, high-perfor-

mance modular structure based on GeodeLink™ architec-

ture. This architecture yields high internal speed (over 4

GB/s) data movement and extremely versatile internal

power management. The GeodeLink architecture is trans-

parent to application software. Communication with the

GX2 processor is over a 33/66 MHz PCI bus.

Geode™ CS5535 Block Diagram

National Semiconductor and Virtual System Architecture are registered trademarks of National Semiconductor Corporation.

Geode, GeodeLink, MacPHYTER, WebPAD, and VSA are trademarks of National Semiconductor Corporation.

For a complete listing of National Semiconductor trademarks, please visit www.national.com/trademarks.

Ports 1-1 & 1-2

Ports 2-1 & 2-2

System Power

External USB

Test/Reset

IDE/Flash

Interface

Voltages

External

Audio

Detect (LVD)

Low Voltage

Geode™ CS5535 is a com-

GeodeLink™ Control

Processor (GLCP)

USB Controller #1

USB Controller #2

ATA-5 Controller

AC97 Controller

(USBC1)

(USBC2)

(ATAC)

(ACC)

Power Good

for Power On

Reset (POR)

The CS5535 incorporates many I/O functions, including

those found in typical SuperI/O chips, simplifying many

system designs. Since the graphics subsystem is entirely

contained in the GX2 processor, system interconnect is

simplified. The device contains state-of-the-art power man-

agement that enables systems, especially battery powered

systems, to significantly reduce power consumption.

Audio is supported by an internal controller, designed to

connect to multiple AC97 compatible codecs such as

National’s LM4550. An IR (infrared) port supports all popu-

lar IR communication protocols. The IR port is shared with

one of two industry-standard serial ports that can reach

speeds of 115.2 kbps. An LPC (low pin count) port is pro-

vided to facilitate connections to a SuperI/O should addi-

tional expansion, such as a floppy drive, be necessary,

and/or to an LPC ROM for the system BIOS.

GeodeLink™

Interface

(GLIU)

Unit

CMOS RAM

Device (DD)

Interface

82xx PC

Legacy

RTC &

Flash

Diverse

Diverse Integration Logic (DIVIL)

Geode™ GX2 Interface

33 or 66 MHz

GeodeLink™ PCI

South Bridge

(GLPCI_SB)

Controller

UART (2)

& IR (1)

Mgmnt

Timers

Power

MFGP

GPIO

SMB

LPC

Port

Preliminary

PCI

www.national.com

Revision 0.8

July 2003

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