MPCBL5524A1D Intel, MPCBL5524A1D Datasheet - Page 22

• Manufacturer Part Number: MPCBL5524A1D
• Manufacturer: Intel

Specifications of MPCBL5524A1D

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Introduction
2.3.17
2.3.18
2.3.19
22
Note: Floppy disks are magnetically recorded media. Avoid placing floppy disk drives near magnetic
Note: The recommended method of accessing the date in systems with Intel processor boards is indirectly
Intel NetStructure
Connector locations and pinouts are documented in
Connectors.”
Counter/Timers
Three counter/timers as defined for the PC/AT* are included on the ZT 5524 / MPCBL5524.
Operating modes supported by the counter/timers include:
The ZT 5524 / MPCBL5524’s 8254-compatible counter/timer resides in the ServerWorks Chipset’s
CSB5. A link to the datasheet for this device is available in
Two counter/timers reside in the National Semiconductor* PC87417 I/O controller. A link to the
datasheet for this device is available in
Floppy Controller
The ZT 5524 / MPCBL5524 includes a standard floppy disk controller. The floppy disk controller
supports an optional external floppy drive that is compatible with an 82077 diskette drive
controller and supports both PC-AT* and PS/2 modes. Floppy signals are available through the
RPIO connector J5.
The ZT 5524 / MPCBL5524’s floppy disk controller resides in the National Semiconductor
PC87417 I/O controller. A link to the datasheet for this device is available in
Controller.”
MPCBL5524 Connectors.”
sources such as power supplies.
Real-Time Clock
The real-time clock performs timekeeping functions and includes 256 bytes of battery-backed
CMOS RAM in two banks that are reserved for BIOS use. Timekeeping features include a time-of-
day clock and a multi-century calendar with alarm features and century rollover. The clock is
accurate to ± 13 minutes/year at 25º C. The time, date, and CMOS values can be specified or
returned to their defaults by using the BIOS Setup program. See
more information.
from the real time clock via the BIOS. The BIOS on Intel processor boards contains a century
checking and maintenance feature. This feature checks the two least significant digits of the year
stored in the real time clock during each BIOS request (INT 1Ah) to read the date and, if less than
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Interrupt on count
Frequency divider
Square wave generator
Software triggered
Hardware triggered
One shot
Connector locations and pinouts are documented in
®
ZT 5524 / MPCBL5524 High-Performance System Master Processor Board TPS
Appendix E, “I/O Controller.”
Appendix A, “ZT 5524 / MPCBL5524
Appendix E, “Chipset.”
Appendix A, “ZT 5524 /
Chapter 3, “Getting Started,”
Appendix E, “I/O
for