General Description
The FDC37C672 with Consumer IR and IrDA v1.1 support incorporates a keyboard interface, SMSCs true CMOS 765B floppy disk controller, advanced digital data separator, two 16C550 compatible UARTs, one Multi-Mode parallel port which includes ChiProtect circuitry plus EPP and ECP, on-chip 24 mA AT bus drivers, two floppy direct drive support, Intelligent power management and SMI support. The true CMOS 765B core provides 100% compatibility with IBM PC/XT and PC/AT architectures in addition to providing data overflow and underflow protection. The SMSC advanced digital data separator incorporates SMSCs patented data separator technology, allowing for ease of testing and use. Both on-chip UARTs are compatible with the NS16C550. The parallel port is compatible with IBM PC/AT architecture, as well as IEEE 1284 EPP and ECP. The FDC37C672 incorporates sophisticated power control circuitry (PCC). The PCC supports multiple low power down modes.

Product Features
▪ 5 Volt Operation
▪ PC98/99 and ACPI 1.0 Compliant
▪ ISA Plug-and-Play Compatible Register Set
▪ Intelligent Auto Power Management
   − Shadowed Write-Only Registers for ACPI Compliance
▪ System Management Interrupt, Watchdog Timer
▪ 2.88MB Super I/O Floppy Disk Controller
   − Licensed CMOS 765B Floppy Disk Controller
   − Software and Register Compatible with SMSCs 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 Powerdown Modes for Reduced Power Consumption
   − DMA Enable Logic
   − Data Rate and Drive Control Registers
   − 480 Address, Up to Eight IRQ and Three DMA Options
▪ Floppy Disk Available on Parallel Port Pins
▪ Enhanced Digital Data Separator
   − 2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250 Kbps Data Rates
   − Programmable Precompensation Modes
▪ Keyboard Controller
   − 8042 Software Compatible
   − 8 Bit Microcomputer
   − 2k Bytes of Program ROM
   − 256 Bytes of Data RAM
   − Four Open Drain Outputs Dedicated for Keyboard/Mouse Interface
   − Asynchronous Access to Two Data Registers and One Status Register
   − Supports Interrupt and Polling Access
   − 8-Bit Counter Timer
   − Port 92 Support
   − 8042 P12 and P16 Outputs
▪ Serial Ports
   − Two Full Function Serial Ports
   − High Speed NS16C550A Compatible UARTs with Send/Receive 16-Byte FIFOs
   − Supports 230k and 460k Baud Programmable Baud Rate Generator Modem Control Circuitry
   − 480 Address and Eight IRQ Options
▪ Infrared Port
   − Multiprotocol Infrared Interface
   − 128-Byte Data FIFO
   − IrDA 1.1 Compliant
   − TEMIC/HP Module Support
   − Consumer IR
   − SHARP ASK IR
   − 480 Address, Up to Eight IRQ and Three DMA Options
▪ Multi-Mode Parallel Port with ChiProtect
   − Standard Mode IBM PC/XT, PC/AT, and PS/2 Compatible Bidirectional Parallel Port
   − Enhanced Parallel Port (EPP) Compatible - EPP 1.7 and EPP 1.9 (IEEE 1284 Compliant)
   − IEEE 1284 Compliant Enhanced Capabilities Port (ECP)
   − ChiProtect Circuitry for Protection Against Damage Due to Printer Power-On
   − 480 Address, Up to Eight IRQ and Three DMA Options
   ▪ ISA Host Interface
   − 16-Bit Address Qualification
   − 8-Bit Data Bus
   − IOCHRDY for ECP and Fast IR
   − Three 8-Bit DMA Channels
   − Eight Direct Parallel IRQs
   − Serial IRQ Option Compatible with Serialized IRQ Support for PCI Systems
▪ 100 Pin QFP and TQFP Packages