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Details, datasheet, quote on part number:FDC87W21
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Datasheet text preview:
FDC87W21
Power I/O Controller with Fast Infrared Support
FEATURES
· · · · 5 Volt Operation Plug & Play 1.0A Compliant Supports Eight IRQs, Four DMA Channels, 480 Relocatable Addresses Floppy Disk Controller (FDC) Compatible with IBM PC/AT Disk Drive Systems Variable Write Precompensation with Track Selectable Capability DMA Enable Logic Supports Floppy Disk Drives and Tape Drives Detects All Over-Run and Under-Run Conditions Data Rate and Drive Control Registers Built-in Address Mark Detection Circuit to Simplify the Read Electronics IBM PC System Address Decoder 24 MHz Crystal Input (48 MHz when for 2 Mbps Fast Tape Drive) FDD Anti-Virus Functions with Software Write Protect and FDD Write Enable Signal (Write Data Signal Was Forced to Be Inactive) Supports up to Four 3.5-Inch or 5.25Inch Floppy Disk Drives Completely Compatible with Industry Standard 82077/ 765A Supports 360K/720K/1.2M/1.44M/2.88M Format; 250 Kbps, 300 Kbps, 500 Kbps, 1 Mbps, 2 Mbps Data Transfer Rate Supports Perpendicular Recording Format Supports 3-Mode FDD and Win95 Driver · 16-Byte Data FIFOs Serial Ports Two High-Speed 16550 Compatible UARTs with 16-Byte Send/Receive FIFOs MIDI Compatible Fully Programmable Serial-Interface Characteristics: 5, 6, 7 or 8-Bit Characters Even, Odd or No Parity Bit Generation/Detection 1, 1.5 or 2 Stop Bits Generation Internal Diagnostic Capabilities: Loop-Back Controls For Communications Link Fault Isolation Break, Parity, Overrun, Framing Error Simulation Programmable Baud Generator Allows Division of 1.8461 MHz and 24 MHz by 1 to (216-1) Maximum Baud Rate Is up to 911.6 (8 times of 115.2 Kbps) for 1.8461 MHz and 1.5 Mbps for 24 MHz Infrared Supports IrDA Version 1.0 SIR Protocol with Maximum Baud Rate up to 115.2 Kbps Supports SHARP ASK-IR Protocol with Maximum Baud Rate up to 57600 bps Supports IrDA Version 1.1 MIR (1.152 Mbps) and FIR (4 Mbps) Protocol Two DMA Channel for Transmitter and Receiver 32-Byte FIFO is Supported in the TX/RX Terminal -
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8-Byte Status FIFO Is Supported to Store Received Frame Status (Such as Overrun, CRC Error, Etc.) Supports Auto-Config SIR and FIR Parallel Port Compatible with IBM Parallel Port Supports Parallel Port with BiDirectional Lines Supports Enhanced Parallel Port (EPP) - Compatible with IEEE 1284 Specification Supports Extended Capabilities Port (ECP) - Compatible with IEEE 1284 Specification Extension FDD Mode Supports Disk Drive B; and Extension 2FDD Mode -
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Supports Disk Drives A and B Through Parallel Port Extension Adapter Mode Supports Pocket Devices Through Parallel Port JOYSTICK Mode Supports Joystick Through Parallel Port ISA Host Interface IDE Supports up to Two Embedded Hard Disk Drives (IDE AT BUS) Programmable Configuration Settings Immediate or Automatic Power-Down Mode for Power Management All Hardware Power-On Settings Have Internal Pull-Up or Pull-Down Resistors as Default Value 100 Pin QFP Package
GENERAL DESCRIPTION
The FDC87W21 is an enhanced version of the FDC87W22 --- which integrates the disk drive adapter, serial port (UART), IrDA 1.0 SIR, parallel port, IDE interface, configurable plugand-play registers for the whole chip --- adding powerful features: IrDA 1.1 (MIR for 1.152 Mbps or FIR for 4 Mbps), TV remote IR. In addition to the function enhancement, FDC87W21 is pin-topin compatible to FDC87W22. The disk drive adapter functions of the FDC87W21 include a floppy disk drive controller compatible with the industry standard 82077/765 data separator, write precompensation circuit, decode logic, data rate selection, clock generator, drive interface control logic, interrupt and DMA logic. The wide range of functions integrated into the FDC87W21 greatly reduces the number of components required for interfacing with floppy disk drives. The FDC87W21 supports up to 4 Three-mode Floppy Disk Drives (FDD) of formats 360K, 720K, 1.2M, 1.44M, or 2.88M, and data transfer rates of 250 Kbps, 300 Kbps, 500 Kbps, 1 Mbps, and 2 Mbps. The FDC87W21 provides two high-speed serial communication ports (UARTs), one of which supports serial Infrared communication. Each 2 UART includes a 16-byte send/receive FIFO, a programmable baud rate generator, complete modem control capability, and a processor interrupt system. One of UART supports infrared (IR) includes 32-byte FIFO, serial IR (115, 200 bps), MIR (1.152 Mbps or 0.576 Mbps), FIR (4 Mbps), and TV remote IR (supported NEC, RC5, extended RC-5, and RECS-80 protocols). The FDC87W21 supports one PC-compatible printer port (SPP), bi-directional Printer Port (BPP), and also Enhanced Parallel Port (EPP) and Extended Capabilities Port (ECP). Through the printer port interface pins, also available are: Extension FDD Mode and Extension 2FDD Mode allowing one or two external floppy disk drives to be attached. Especially in the application of notebook computer, this feature is very useful. The Extension Adapter Mode of the FDC87W21 also allows pocket devices to be installed through the printer interface pins in notebook computer applications according to a protocol set by SMSC, but with upgraded performance. The JOYSTICK mode allows a joystick to be connected to a parallel port with a signal switching cable.
The FDC87W21 supports two embedded hard disk drive (IDE AT bus) interfaces and a game port with decoded read/write output. The configuration registers support mode selection, function enable/disable, and power down function selection. Moreover, the configurable PnP registers are compatible with
the plug-and-play feature in Windows 95TM, which makes system resource allocation more efficient than ever.
Standard Microsystems is a registered trademark and SMSC is a trademark of Standard Microsystems Corporation. Other product and company names are trademarks or registered trademarks of their respective holders.
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TABLE OF CONTENTS
FEATURES ...... 1 GENERAL DESCRIPTION ....... 2 PIN CONFIGURATION.... 6 PIN DESCRIPTION...... 7 HOST INTERFACE ............ 7 FDC FUNCTIONAL DESCRIPTION....... 17 FDC87W21 FDC ........ 17 REGISTER DESCRIPTIONS........ 31 IDE ........ 42 IDE DECODE DESCRIPTION ..... 42 UART PORT .. 43 UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART A, UART B) ........... 43 REGISTER ADDRESS ...... 43 IR PORT....... 54 PARALLEL PORT......... 83 PRINTER INTERFACE LOGIC........... 83 ENHANCED PARALLEL PORT (EPP)......... 85 EXTENDED CAPABILITIES PARALLEL (ECP) PORT ......... 89 EXTENSION FDD MODE (EXTFDD) ........ 98 EXTENSION 2FDD MODE (EXT2FDD) .... 98 EXTENSION ADAPTER MODE (EXTADP) (PATENT PENDING) ........ 98 JOYSTICK MODE (PATENT PENDING)......... 99 GAME PORT DECODER ......100 PLUG AND PLAY CONFIGURATION ...........100 EXTENDED FUNCTION REGISTERS ...........100 EXTENDED FUNCTIONS ENABLE REGISTERS (EFERS)........101 EXTENDED FUNCTION INDEX REGISTERS (EFIRS), EXTENDED FUNCTION DATA REGISTERS (EFDRS) ........101 BIT MAP CONFIGURATION REGISTERS .....137 SPECIFICATIONS........139 ABSOLUTE MAXIMUM RATINGS..........139 DC CHARACTERISTICS....139 AC CHARACTERISTICS ...........141 TIMING WAVEFORMS .........147 FDC ...........147 UART/PARALLEL .........149 MODEM CONTROL TIMING.......150 PARALLEL PORT...........151 PARALLEL PORT TIMING .........151 EPP DATA OR ADDRESS READ CYCLE (EPP VERSION 1.9).........152 EPP DATA OR ADDRESS WRITE CYCLE (EPP VERSION 1.9) .......153 EPP DATA OR ADDRESS READ CYCLE (EPP VERSION 1.7).........154 4
EPP DATA OR ADDRESS WRITE CYCLE (EPP VERSION 1.7) .......155 PARALLEL PORT FIFO TIMING .........155 ECP PARALLEL PORT FORWARD TIMING ..........156 ECP PARALLEL PORT REVERSE TIMING............156 EXTENSION ADAPTER MODE COMMAND CYCLE ..157 EXTENSION ADAPTER MODE INTERRUPT CYCLE ..........157 EXTENSION ADAPTER MODE DMA CYCLE.........158 APPLICATION CIRCUITS .....158 PARALLEL PORT EXTENSION FDD ..........158 PARALLEL PORT EXTENSION FDD ..........159 PARALLEL PORT EXTENSION 2FDD ........160 PARALLEL PORT JOYSTICK MODE ...........161 FOUR FDD MODE........161 PACKAGE DIMENSIONS .....162
80 Arkay Drive Hauppauge, NY 11788 (516) 435-6000 FAX (516) 273-3123 5
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