SC1100 datasheet(66/348 Pages) NSC

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Revision 1.1

SuperI/O Module (Continued)

4.1

FEATURES

PC98 and ACPI Compliant

• PnP Configuration Register structure

• Flexible resource allocation for all logical devices:

— Relocatable base address

— 9 parallel IRQ routing options

— 3 optional 8-bit DMA channels (where applicable)

Serial Port

• 16550A compatible

Infrared Communication Port

• IrDA 1.1 and 1.0 compatible

• Data rate of 1.152 Mbps (MIR)

• Data rate of 4.0 Mbps (FIR)

• Data rate of up to 115.2 Kbps (HP-SIR)

• Selectable internal or external modulation/demodulation

(ASK-IR and DASK-IR options of SHARP-IR)

• Consumer-IR (TV-Remote) mode

• Consumer Remote Control supports RC-5, RC-6, NEC,

RCA and RECS 80

• DMA support

System WakeUp Control (SWC)

• Power-up request upon detection of RI# or CEIR activity:

— Optional routing of power-up request on IRQ line

• Pre-programmed CEIR address in a pre-selected

standard (any NEC, RCA or RC-5)

• Powered by VSB

• Battery-backed wakeup setup

• Power-fail recovery support

Real-Time Clock

• A modifiable address that is referenced by a 16-bit

programmable register

• DS1287, MC146818 and PC87911 compatibility

• 242 bytes of battery backed up CMOS RAM in two

banks

• Selective lock mechanisms for the CMOS RAM

• Battery backed up century calendar in days, day of the

week, date of month, months, years and century, with

automatic leap-year adjustment

• Battery backed-up time of day in seconds, minutes and

hours that allows a 12 or 24 hour format and adjust-

ments for daylight savings time

• BCD or binary format for time keeping

• Three different maskable interrupt flags:

— Periodic interrupts - At intervals from 122 msec to

500 msec

— Time-of-Month alarm - At intervals from once per

second to once per month

— Update Ended Interrupt - Once per second upon

completion of update

• Separate battery pin, 3.0V operation that includes an

internal UL protection resistor

• 7 µA maximum power consumption during power down

• Double-buffer time registers

• Y2K Compliant

Clock Sources

• 48 MHz clock input

• On-chip low frequency clock generator for wakeup

• 32.768 KHz crystal with an internal frequency multiplier

to generate all required internal frequencies

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