
SMSC DS – FDC37N958FR
Rev. 09/01/99
FDC37N958FR
Notebook I/O Controller with Enhanced Keyboard
and System Control
FEATURES
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5 Volt Operation
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ACPI 1.0 Compliant
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PC 99 Compliant
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Three Power Planes
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<20
"
A Consumption in Sleep Mode
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Configuration Register Set Compatible with
ISA Plug-and-Play Standard (Version 1.0a)
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Serial IRQ meets IRQ Specification for PCI
Systems
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Quiet (Active) Mode
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Continuous (Idle) Mode
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8051 Controller uses Parallel Port to
Reprogram the Flash ROM
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IR Interface Fully Compliant to IrDA 1.1
(Fast IR)
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TEMIC/IBM Module Support
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HP Module Support
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Sharp Module Support
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ISA Host Interface
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16 Bit Address Qualification
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8 Bit Data bus
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Zero Wait-State I/O Register Access
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All Write Only Registers are Shadowed
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IOCHRDY for ECP and Flash Cycles
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8 Direct IRQs Including nSMI
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Four 8 Bit DMA Channels
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System Flash Interface (256Kx8)
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8051/Host CPU Multiplexed Interface
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Eight 32K pages - 8051 Keyboard BIOS
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Four 64K pages - Host System BIOS
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8051 Keyboard and System Controller
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Provides System Power Management
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System Watch Dog Timer (WDT)
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8042 Style Host Interface
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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
Access to On-Chip Control Registers via
MOVX External Data Access Commands
Access to RTC and CMOS Registers
Up to 16x8 Keyboard Scan Matrix
Two 16 Bit Timer/Counter
Integrated TX/RX Serial Interface
Six 8051 Interrupt Sources
Sixteen 8 Bit, Host/8051 Mailbox
Registers
19 Maskable Hardware Wake-Up Events
Supported
Fast GATEA20
Fast CPU_RESET
Multiple Clock Sources and Frequencies
IDLE and SLEEP Modes
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Real Time Clock
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MC146818 and DS1287 Compatible
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256 Bytes of Battery Backed CMOS in
Two Banks of 128 Bytes
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128 Bytes of CMOS RAM Lockable in
4x32 Byte Blocks
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12 and 24 Hour Time Format
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Binary and BCD Format
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<1
"
A Standby Current (typ)
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ACCESS.bus Interface
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8584 Style Interface
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PS/2 Ports
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