SMSC SIO1049

3

Revision 0.35 (05-17-06)

PRODUCT PREVIEW

General Description

The SMSC SIO1049 is a 3.3V PC 99, PC2001, and ACPI 2.0 compliant Super I/O Controller. The

SIO1049 implements the LPC interface, a pin reduced ISA interface which provides the same or better

performance as the ISA/X-bus with a substantial savings in pins used. The part also includes 14 GPIO

pins.

The SIO1049 incorporates a 16C550A compatible UART and one Multi-Mode parallel port with

ChiProtect

™ circuitry plus EPP and ECP support. The SIO1049 does not require any external filter

components, is easy to use and offers lower system cost and reduced board area.

The SIO1049 offers a full 16-bit internally decoded address bus, a Serial IRQ interface with PCI

CLKRUN# support, relocatable configuration ports, and three DMA channel options.

The on-chip UART is compatible with the 16C550A. There is a dedicated Serial Infrared interface

UART, which complies with IrDA v1.2 (Fast IR), HPSIR, and ASKIR formats (used by Sharp and other

PDAs), as well as Consumer IR. There is a second IR port, which supports NEC, Phillips RC5 and

Microsoft CIR protocols for waking from any Sleep level, as well as other Consumer IR protocols for

normal data transfer, and is enhanced to allow measurement of an incoming carrier. In addition a third

block (BIRCC: “Blaster” IR Communication Controller) is provided in order to be able to transmit control

on up to four IR Emitter channels.

The parallel port is compatible with IBM PC/AT architectures, as well as IEEE 1284 EPP and ECP.

The parallel port ChiProtect

™ circuitry prevents damage caused by an attached powered printer when

the SIO1049 is not powered.

The SIO1049 features Software Configurable Logic (SCL) for ease of use. SCL allows programmable

system configuration of key functions such as the parallel port and UART.

The SIO1049 supports the ISA Plug-and-Play Standard register set (Version 1.0a) and provides the

recommended functionality to support Windows operating systems, PC99, and PC2001. The I/O

Address, DMA Channel, and Hardware IRQ of each device in the SIO1049 may be reprogrammed

through the internal configuration registers. There are multiple I/O address location options, a

Serialized IRQ interface, and three DMA channels.