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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© 2003 National Semiconductor Corporation
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
External USB
Test/Reset
IDE/Flash
Interface
Voltages
External
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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