Features: · 5 Volt Operation
· ISA Plug-and-Play Standard (Version 1.0a)
Compatible Register Set
· Soft Power Management, SMI Support
· ACCESS.bus Support
· 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
- Port 92 Support
- Fast Gate A20 and Hardware Keyboard
Reset
· 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
- 1mA Standby Current (typ)
· Intelligent Auto Power Management
· 2.88MB Super I/O Floppy Disk Controller
- Relocatable to 480 Different Addresses
- 13 IRQ Options
- Four 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
- 24mA 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
- 48mA 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 FIFOsPinout
SpecificationsOperating Temperature Range.............................................................. 0 to +70
Storage Temperature Range..............................................................-55o to +150
Lead Temperature Range (soldering, 10 seconds) ....................................... +325
Positive Voltage on any pin, with respect to Ground...................................Vcc+0.3V
Negative Voltage on any pin, with respect to Ground...................................... -0.3V
Maximum Vcc...................................................................................................... +7V
*Stresses above those listed above could cause permanent damage to the device. This is a stress rating only and functional operation of the device at any other condition above those indicated in the operation sections of this specification is not implied.
DescriptionThe FDC37C93xFR with Fast IR support incorporates a keyboard interface, real-time clock, SMSC's true CMOS 765B floppy disk controller, advanced digital data separator, 16 byte data FIFO, two 16C550 compatible UARTs, one Multi-Mode parallel port which includes ChiProtect circuitry plus EPP and ECP support, IDE interface, on-chip 24 mA AT bus drivers, game port chip select and two floppy direct drive support, as well as ACCESS.bus, soft 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 SMSC's patented data separator technology, allowing for ease of testing and use. Both on-chip UARTs are compatible with the NS16C550. The parallel port, the IDE interface, and the game port select logic are compatible with IBM PC/AT architecture, as well as EPP and ECP. The FDC37C93xFR incorporates sophisticated power control circuitry (PCC). The PCC supports multiple low power down modes.
The FDC37C93xFR provides support for the ISA Plug-and-Play Standard (Version 1.0a) and provides for the recommended functionality to support Windows '95. Through internal configuration registers, each of the FDC37C93xFR's logical device's I/O address, DMA channel and IRQ channel may be programmed. There are 480 I/O address location options, 13 IRQ options, and three DMA channel options for each logical device.
The FDC37C93xFR does not require any external filter components and is, therefore, easy to use and offers lower system cost and reduced board area. The FDC37C93xFR is software and register compatible with SMSC's proprietary 82077AA core.
IBM, PC/XT and PC/AT are registered trademarks and PS/2 is a trademark of International Business Machines Corporation SMSC is a registered trademark and Ultra I/O, ChiProtect, and Multi-Mode are trademarks of Standard Microsystems Corporation
FDC37CXFR Data Sheet
