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FDC37C93x
Plug and Play Compatible Ultra I/O Controller
FEATURES
• 5 Volt Operation
• ISA Plug-and-Play Standard (Version 1.0a)
Compatible Register Set
• 8042 Keyboard Controller
- 2K Program ROM
- 256 Bytes Data RAM
- Asynchronous Access to Two Data
Registers and One Status Register
- Supports Interrupt and Polling Access
- 8 Bit Timer/Counter
• Real Time Clock
- MC146818 and DS1287 Compatible
- 256 Bytes of Battery Backed CMOS in
Two Banks of 128 Bytes
- 128 Bytes of CMOS RAM Lockable in
4x32 Byte Blocks
- 12 and 24 Hour Time Format
- Binary and BCD Format
- 1µa Standby Current (typ)
• Intelligent Auto Power Management
• 2.88MB Super I/O Floppy Disk Controller
- Relocatable to 480 Different Addresses
- 13 IRQ Options
- 4 DMA Options
- Licensed CMOS 765B Floppy Disk
Controller
- Advanced Digital Data Separator
- Software and Register Compatible with
SMSC's Proprietary 82077AA
Compatible Core
- Sophisticated Power Control Circuitry
(PCC) Including Multiple Powerdown
Modes for Reduced Power Consumption
- Game Port Select Logic
- Supports Two Floppy Drives Directly
- 24 mA AT Bus Drivers
- Low Power CMOS Design
• Licensed CMOS 765B Floppy Disk
Controller Core
- Supports Vertical Recording Format
- 16 Byte Data FIFO
- 100% IBM® Compatibility
- Detects All Overrun and Underrun
Conditions
- 48 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
• Serial Ports
- Relocatable to 480 Different Addresses
- 13 IRQ Options
- Two High Speed NS16C550 Compatible
UARTs with Send/Receive 16 Byte
FIFOs
- Programmable Baud Rate Generator
- Modem Control Circuitry Including 230K
and 460K Baud
- IrDA, HP-SIR, ASK-IR Support
• IDE Interface
- Relocatable to 480 Different Addresses
- 13 IRQ Options (IRQ Steering through
chip)
- Two Channel/Four Drive Support
- On-Chip Decode and Select Logic
Compatible with IBM PC/XT® and
PC/AT® Embedded Hard Disk Drives
• Serial EEPROM Interface
• Multi-Mode Parallel Port with ChiProtect
