Features: • 5 Volt Operation
• Intelligent Auto Power Management
• 16 Bit Address Qualification (Optional)
• 2.88MB Super I/O Floppy Disk Controller
- Licensed CMOS 765B Floppy Disk Controller
- Software and Register Compatible with SMSC's Proprietary 82077AA Compatible Core
- Supports Two Floppy Drives Directly
- 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
- Swap Drives A and B
- Non-Burst Mode DMA option
- 48 Base I/O Address, Seven 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
• Serial Ports
- Two High Speed NS16C550 Compatible UARTs with Send/Receive 16 Byte FIFOs
- Supports 230k and 460k Baud
- Programmable Baud Rate Generator
- Modem Control Circuitry
- Infrared - IrDA (HPSIR) and Amplitude Shift Keyed IR (ASKIR)
- Alternate IR Pins (Optional)
- 96 Base I/O Address and Eight IRQ 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)
- Enhanced Capabilities Port (ECP) Compatible (IEEE 1284 Compliant)
- Incorporates ChiProtect Circuitry for Protection Against Damage Due to Printer Power-On
- 192 Base I/O Address, Seven IRQ and Three DMA Options
• ISA Host Interface
• IDE Interface (Optional)
- On-Chip Decode and Select Logic Compatible with IBM PC/XT and PC/AT Embedded Hard Disk Drives
- 48 Base I/O Address and Seven IRQ Options
• Game Port Select Logic
- 48 Base I/O Addresses
• General Purpose Address Decoder
- 16 Byte Block decode
- 48 Base I/O Address Options
• 100 Pin QFP and TQFP PackagePinout
SpecificationsOperating Temperature Range............................................ 0 to +70
Storage Temperature Range.............................................-55 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.
Note: When powering this device from laboratory or system power supplies, it is important that the Absolute Maximum Ratings not be exceeded or device failure can result. Some power supplies exhibit voltage spikes on their outputs when the AC power is switched on or off. In addition, voltage transients on the AC power line may appear on the DC output. If this possibility exists, it is suggested that a clamp circuit be used.
DescriptionThe SMSC FDC37C669 PC 95 Compatible Super I/O Floppy Disk Controller with Infrared Support utilizes SMSC's proven SuperCell technology for increased product reliability and functionality. The FDC37C669 is PC95 compliant and is optimized for motherboard applications. The FDC37C669 supports both 1 Mbps and 2 Mbps data rates and vertical vertical recording operation at 1 Mbps Data Rate.
The FDC37C669 incorporates 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 12 mA AT bus drivers, game port chip select and two floppy direct drive 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. One UART includes additional support for a Serial Infrared Interface, complying with IrDA, HPSIR, and ASKIR formats (used by Sharp, Apple Newton, and other PDAs). The parallel port, the IDE interface, and the game port select logic are compatible with IBM PC/AT architectures. The FDC37C669 incorporates sophisticated power control circuitry (PCC). The PCC supports multiple low power down modes.
The FDC37C669 Floppy Disk Controller incorporates Software Configurable Logic (SCL) for ease of use. Use of the SCL feature allows programmable system configuration of key functions such as the FDC, parallel port, and UARTs. The parallel port ChiProtect prevents damage caused by the printer being powered when the FDC37C669 is not powered.
The FDC37C669 does not require any external filter components, and is, therefore easy to use and offers lower system cost and reduced board area. The FDC37C669 is software and register compatible with SMSC's proprietary 82077AA core.
FDC37C669 Data Sheet
