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FDC37N972 Datasheet

  • FDC37N972

  • Advanced Notebook I/O Controller with Enhanced Keyboard Cont...

  • 390頁

  • SMSC   SMSC

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FDC37N972
ADVANCE INFORMATION
Advanced Notebook I/O Controller with Enhanced
Keyboard Control and System Management
FEATURES
!"
3.3V Operation With 5V Tolerant Buffers
!"
ACPI 1.0 and PC99 Compliant
!"
Three Power Planes
!"
ACPI Embedded Controller Interface
!"
Low Standby Current in Sleep Mode
!"
Configuration Register Set Compatible With
ISA Plug-and-Play Standard (Version 1.0a)
!"
Serial IRQ Interface Compatible With
Serialized IRQ Support for PCI Systems
!"
Floppy Disk Interface on Parallel Port
!"
8051 Controller uses Parallel Port to
Reprogram the Flash ROM
!"
Advanced Infrared Communications
Controller (IrCC 2.0)
- IrDA V1.1 (4Mbps), HPSIR, ASKIR,
Consumer IR Support
- Two IR Ports
- Relocatable Base I/O Address
!"
512k Byte Flash ROM Interface
- 8051/Host CPU Multiplexed Interface
- Sixteen 32K Pages - 8051 Keyboard
BIOS
- Eight 64K Pages - Host System BIOS
- Embedded Controller uses Parallel Port
to Reprogram Flash ROM
!"
ISA Host Interface With Clock Run Support
and ACPI SCI Interface
- 16 Bit Address Qualification
- 8 Bit Data Bus
- Zero Wait-State I/O Register Access
- Shadowed Write Only registers
- IOCHRDY for ECP, IRCC 2.0 and Flash
Cycles
- 15 Direct IRQs Including nSMI
- Four 8 Bit DMA Channels
- XNOR Test Chain
!"High-Performance
Embedded 8051
Keyboard and System Controller
- Provides System Power Management
- System Watch Dog Timer (WDT)
- 8042 Style Host Interface
- Asynchronous Access to Two Data
Registers and One Status Register
- Supports Interrupt and Polling Access
- 2K Internal ROM, nEA Pin Select
- 32K Bank Switchable External Flash
ROM Interface
- 256 Bytes Data RAM
- On-Chip Control Registers Available via
MOVX External Data Access Commands
- Access to RTC and CMOS Registers
- Up to 16x8 Keyboard Scan Matrix
- Three 16 Bit Timer/Counters
- Integrated TX/RX Serial Interface
- Eleven 8051 Interrupt Sources
- Thirty-Two 8 Bit, Host/8051 Mailbox
Registers
- Thirty Maskable Hardware Wake-Up
Events Supported
- Fast GATEA20
- Fast CPU_RESET
- Multiple Clock Sources and Frequencies
- IDLE and SLEEP Modes
- Fail-Safe Ring Oscillator
!"Real
Time Clock
- MC146818 and DS1287 Compatible
- 256 Bytes of Battery Backed CMOS in
Two 128-Byte Banks
- 128 Bytes of CMOS RAM Lockable in
4x32 Byte Blocks
- 12 and 24 Hour Time Format
- Binary and BCD Format

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