I/O Controller 128-Pin VTQN

The SIO10N268 is a single chip I/O device that can be used on the ISA or LPC bus. Bus selection isaccomplished as a jumper option. Offering the same part with two system busses enables easymigration from an ISA architecture to the LPC generation enabling the preservation of designtechniques and BIOS. The SIO10N268 is a 3.3V operational (5.0V tolerant), PC 99/2001, and ACPI 1.0 compliant Super I/O Controller. This device includes SMSC’s true CMOS 765B floppy disk controller with advanced digital data separator and SMSC’s Multi-Mode parallel port with ChiProtect circuitry plus EPP and ECP support. Each variation of the part also includes 33 GPIO pins, support for two LED’s with blinking option, and a WatchDog Timer (WDT) with optional output pin. The SIO10N268 includes (4) 16C550 compatible UARTs. One UART includes additional support for a Serial Infrared Interface that complies with IrDA v1.2 (Fast IR), HPSIR, and ASKIR formats, as well as Consumer IR. SIO10N268, when LPC Mode is selected, implements the LPC bus interface. In this mode, the X-Bus Interface is enabled to interface to external I/O devices that have an 8-bit data bus and to standard ISA memory devices, up to 2MB, which can serve as BIOS flash. SIO10N268, when ISA Mode is selected, supports the ISA Plug-and-Play Standard (Version 1.0a). The I/O Address, DMA Channel and Hardware IRQ of each device in the part may be reprogrammed through the internal configuration registers.

• 3.3 Volt Operation (5 Volt Tolerant)
• PC99, PC01, ACPI 1.0 Compliant
• LPC or ISA Interface
  • SIO10N268 offers two modes of operation: LPC Mode or ISA Mode. These modes are jumper selectable.
• X-Bus Interface (LPC Mode Only)
  • Three chip selects (2 I/O and 1 Memory)
  • 8-bit data transfers
  • Support for up to 2MB Flash
  • Interfaces with 3V memory devices
  • Support for up to two external I/O components
  • Offers three modes of operation for I/O devices
  • Provides FWH Emulation
• Serial IRQ Compatible with Serialized IRQ Support for PCI Systems
• Programmable Wake-up Event (PME) Interface
• (33) General Purpose Input/Output Pins
• System Management Interrupt
• 2.88MB Super I/O Floppy Disk Controller
  • Licensed CMOS 765B Floppy Disk Controller
  • Software and Register Compatible with SMSC"s Proprietary 82077AA Compatible Core
  • Supports Two Floppy Drives Directly
  • Configurable Open Drain/Push-Pull Output Drivers
  • Supports Vertical Recording Format
  • 16-Byte Data FIFO
  • 100% IBM Compatibility
  • Detects All Overrun and Underrun Conditions
  • Sophisticated Power Control Circuitry (PCC) Including Multiple Power Down Modes for Reduced Power Consumption
  • DMA Enable Logic
  • Data Rate and Drive Control Registers
  • 480 Address, Up to 15 IRQ and Four DMA Options
• Floppy Disk Available on Parallel Port Pins (ACPI Compliant)
  • Enhanced Digital Data Separator
  • 2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250 Kbps Data Rates
  • Programmable Precompensation Modes
• Serial Ports
  • Four Full Function Serial Ports
  • High Speed NS16C550 Compatible UARTs with Send/Receive 16-Byte FIFOs
  • Supports 230k and 460k Baud
  • Programmable Baud Rate Generator
  • Modem Control Circuitry
  • 480 Address and 15 IRQ Options
• Infrared Communications Controller
  • IrDA v1.2 (4Mbps), HPSIR, ASKIR, Consumer IR Support
  • 2 IR Ports
  • 96 Base I/O Address, 15 IRQ, and 4 DMA Options
• Multi-Mode Parallel Port with ChiProtect
  • Standard Mode IBM PC/XT, PC/AT, and PS/2 Compatible Bi-directional Parallel Port
  • Enhanced Parallel Port (EPP) Compatible - EPP 1.7 and EPP 1.9 (IEEE 1284 Compliant)
  • EEE 1284 Compliant Enhanced Capabilities Port (ECP)
  • ChiProtect Circuitry for Protection
  • 480 Address, Up to 15 IRQ, and Four DMA Options
• Two LED Drivers with blinking options
• Watch Dog Timer with optional output pin
• 128 Pin VTQN lead-free RoHS compliant package