P5F97/P5F103 User’s Manual
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designed to bring the “Plug and Play” concept to the outside of the
computer system chassis. The bus allows devices to be attached,
configured, used and detached while the host system is in operation.
The USB will allow as many as 63 devices to be daisy chained in
any combination per port. With up to 12Mbits/sec transfer rate, the
USB is suitable for devices such as keyboard, mouse, digital
joystick, game pad, fax/modem, scanner, printer, ISDN and
telephony device.
1.11 Real-time Clock, CMOS RAM and Battery
The integrated real-time clock (RTC) provides a time of day clock, and
an 85-year calendar with alarm features. P5F97/P5F103 also has 242
bytes battery backed CMOS RAM which stores the system setup
information and password. The RTC and CMOS RAM can be set via the
BIOS SETUP program. The contents of the CMOS RAM can be cleared
by placing a shunt to short pin2 and pin3 of JP11 for 5 seconds when the
system power is off. A coin-cell style Lithium CR2032 battery is used to
provide power to the RTC and CMOS memory. The battery has a three
year life if the system is not powered up. When the system powers up,
the power for the RTC and CMOS RAM is supplied from the 5 V power
supply to extend the life of the battery.
1.12 IrDA Infrared Support
A 5-pin header connector is used to connect a Hewlett Packard HSDSL-
1000 compatible IrDA or Sharp ASKIR Infrared module. Once the
module is installed, the user can use application software such as
Microsoft Infrared (MSIR) to transfer files between the computer system
and portable devices such as laptops and printers.
1.13 Power Management
The integrated DPMA (Dynamic Power Management Architecture)
features in the ALi Aladdin V chipset go far beyond the original vision
of the “Green PC” to create exciting new application models for the
“OnNow” PC platform. The “OnNow” PC is a PC which is always on
and ready for use but appears to be off when not in use.
Chapter 1: Introduction
