Service manual

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Chipset
SMSC FDC37N869 PC 99 COMPLIANT 5V AND 3.3V SUPER I/O CONTROLLER WITH INFRARED SUPPORT
The FDC37N869 features:
supporting chip - super I/O
• 5 volt and 3.3 volt operation
• Intelligent auto power management
• 16 bit address qualification
• 2.88MB Super I/O Floppy Disk Controller
- Licensed CMOS 765B Floppy Disk Controller
- Software and register compatible with SMSC proprietary
82077AA compatible core
- Supports one Floppy Drive directly
- Configurable Open Drain/Push-Pull Output Drivers
- Supports Vertical Recording Format
- 16 byte data FIFO
- 100% IBM compatibility
- Detects all overrun and underrun conditions
- Sophisticated Power Control Circuitry (PCC) including
multiple power-down 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, 15 IRQ and 4 DMA options
- Forceable write protect and disk change controls
• Floppy disk available on parallel port pins ACPI compliant
• Enhanced digital data separator
- 2Mbps, 1Mbps, 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 communications controller
- IrDA v1.2 (4Mbps), HPSIR, ASKIR, Consumer IR Support
- 2 IR Ports
- 96 base I/O address, 15 IRQ options and 4 DMA options
• 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) 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, 16 IRQ and 4 DMA options
• Game port select logic
- 48 base I/O addresses
• General Purpose Address Decoder
- 16-byte block decode