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
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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
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Revision 0.1 (03-07-07)
PRODUCT PREVIEW
2
SMSC SIO1000
Super I/O with LPC Interface with FIR and Consumer IR Support
General Description
The SMSC SIO1000 is a 3.3V PC 99, PC2001, and ACPI 2.0 compliant Super I/O Controller. The
SIO1000 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 SIO1000 incorporates a 16C550A compatible UART and one Multi-Mode parallel port with
ChiProtect™ circuitry plus EPP and ECP support. The SIO1000 does not require any external filter
components, is easy to use and offers lower system cost and reduced board area.
The SIO1000 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 dedicated Consumer Infrared interface, which
complies with NEC PPM and Phillips RC5 formats.
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 SIO1000 is not powered.
The SIO1000 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 SIO1000 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 SIO1000 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 SIO1000
PRODUCT PREVIEW
3
Revision 0.1 (03-07-07)
Super I/O with LPC Interface with FIR and 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
INFRARED
INTERFACE
(CIRCC2)
IRRX2, IRRX3*
CIRTX*
CIRRX*
*
Denotes Multifunction Pins
V
TR
Vcc Vss
CLOCKI
CLKI32
Figure 1 SIO1000 Block Diagram
Revision 0.1 (03-07-07)
PRODUCT PREVIEW
4
SMSC SIO1000
Super I/O with LPC Interface with FIR and Consumer IR Support
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ADI Reference Circuit
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