Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete
information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no
responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without
notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does
not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC
or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's standard
Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors
known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request.
SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause
or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further
testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale
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HAVE FAILED OF ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES.
Revision 0.35 (05-17-06)
PRODUCT PREVIEW
2
SMSC SIO1049
Super I/O with LPC Interface, with IrDA and Microsoft
®
Windows
®
MCE Consumer IR Support
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.
SMSC SIO1049
PRODUCT PREVIEW
3
Revision 0.35 (05-17-06)
Super I/O with LPC Interface, with IrDA and Microsoft
®
Windows
®
MCE Consumer IR Support
Block Diagram
PD[0:7],
IO_SMI#*
IO_PME#
MULTI-MODE
PARALLEL
PORT
BUSY, SLCT,
PE, nERROR, nACK
nSLCTIN, nALF
nINIT, nSTROBE
SMI PME WDT
CONTROL, ADDRESS, DATA
GENERAL
PURPOSE
I/O
GP10, GP11,
GP12*, GP13*,
GP14*,
GP23*,
GP4[0:7]
SER_IRQ
PCI_CLK
LAD0
LAD1
LAD2
LAD3
LFRAME#
LDRQ#
PCI_RESET#
LPCPD#
CLKRUN#
SERIAL
IRQ
CONFIGURATION
REGISTERS
ACPI
BLOCK
IRQIN1*, IRQIN2*
TXD1, nRTS1, nDTR1
LPC BUS
INTERFACE
16C550
COMPATIBLE
SERIAL
PORT 1
nCTS1, RXD1,
nDSR1, nDCD1, nRI1
IRTX2, IRMODE*
INFRARED
INTERFACE
(IrCC 2.0)
CLOCK
GEN
CONSUMER
INFRARED
INTERFACE
(CIRCC3,
BIRCC)
*
IRRX2, IRRX3*
CIRTX*
CIRRX*
LEARNIN*
ETX(0-3)*
ED(0-3)*
V
TR
Vcc Vss
CLOCKI
CLKI32
* Denotes Multifunction Pins
Figure 1 SIO1049 Block Diagram
Revision 0.35 (05-17-06)
PRODUCT PREVIEW
4
SMSC SIO1049
Super I/O with LPC Interface, with IrDA and Microsoft
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