2.88MB Super I/O Floppy Disk Controller
− Relocatable to 480 Different Base I/O
Addresses
− 15 IRQ Options
− 4 DMA Options
− Open-Drain/Push-Pull Configurable Output
Drivers
− Licensed CMOS 765B Floppy Disk
Controller
− Advanced Digital Data Separator
− Software and Register Compatible with
SMSC's Proprietary 82077AA Compatible
Core
− Low Power CMOS Design with Sophisticated
Power Control Circuitry (PCC) Including
Multiple Powerdown Modes for Reduced
Power Consumption
− Supports Two Floppy Drives on the FDD
Interface and Two Floppy Drives on the
Parallel Port Interface
− 12 mA FDD Interface Cable Drivers with
Schmitt Trigger Inputs
Licensed CMOS 765B Floppy Disk Controller
Core
− Supports Vertical Recording Format
− 16-Byte Data FIFO
− 100% IBM Compatibility
− Detects All Overrun and Underrun
Conditions
− 12 mA Drivers and Schmitt Trigger Inputs
− DMA Enable Logic
− Data Rate and Drive Control Registers
Enhanced Digital Data Separator
− Low Cost Implementation
− No Filter Components Required
− 2 Mbps, 1 Mbps, 500 Kbps, 300 Kbps, 250
Kbps Data Rates
− Programmable Precompensation Modes
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 1.7 and EPP
1.9 Compatible (IEEE 1284 Compliant)
− IEEE 1284 Compliant Enhanced Capabilities
Port (ECP)
− ChiProtect Circuitry to Prevent Printer
Power-On Damage
− Relocatable to 480 Different Base I/O
Addresses
− 15 IRQ Options
− 4 DMA Options
− Microsoft and HP compatible High Speed
Mode
− Floppy Disk Interface on Parallel Port
− 8051-Controlled Parallel Port Mode
Serial Port
− High-Speed NS16550A-Compatible UART
with 16-Byte Send/Receive FIFOs
− Programmable Baud Rate Generator
− Modem Control Circuitry Including 230k and
460k Baud
− Relocatable to 480 Different Base I/O
Addresses
− 15 IRQ Options
208 Pin TQFP and FBGA Package Options
ORDERING INFORMATION
Order Numbers:
LPC47N252-SG for 208 Pin FBGA Package
LPC47N252-SD for 208 Pin TQFP Package
SMSC DB – LPC47N252
Page 2
Rev. 10/27/2000