BOXD845EBG2L Intel, BOXD845EBG2L Datasheet - Page 28

• Manufacturer Part Number: BOXD845EBG2L
• Manufacturer: Intel

Specifications of BOXD845EBG2L

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Intel Desktop Board D845EBG2/D845EPT2 Technical Product Specification
1.8.4 Real-Time Clock, CMOS SRAM, and Battery
✏
1.9 I/O Controller
1.9.1 Serial Ports
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A coin-cell battery (CR2032) powers the real-time clock and CMOS memory. When the computer
is not plugged into a wall socket, the battery has an estimated life of three years. When the
computer is plugged in, the standby current from the power supply extends the life of the battery.
The clock is accurate to ± 13 minutes/year at 25 ºC with 3.3 VSB applied.
If the battery and AC power fail, custom defaults, if previously saved, will be loaded into CMOS
RAM at power-on.
The SMSC LPC47M102 I/O controller provides the following features:
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The BIOS Setup program provides configuration options for the I/O controller.
The Desktop Boards D845EBG2 and D845EPT2 have two serial port connectors. Serial port A is
located on the back panel. Serial port B is accessible using a connector located near the main
power connector. The serial ports support data transfers at speeds up to 115.2 kbits/sec with BIOS
support.
NOTE
For information about
SMSC LPC47M102 I/O controller
For information about
The location of the serial port A connector
The signal names of the serial port A connector
The location of the serial port B connector
The signal names of the serial port B connector
Two serial ports
One parallel port with Extended Capabilities Port (ECP) and Enhanced Parallel Port
(EPP) support
Serial IRQ interface compatible with serialized IRQ support for PCI systems
PS/2-style mouse and keyboard interfaces
Interface for one 1.44 MB or 2.88 MB diskette drive
Intelligent power management, including a programmable wake-up event interface
PCI power management support
Fan tachometer inputs
http://www.smsc.com
Refer to
Figure 10, page 54
Table 21, page 56
Figure 15, page 70
Table 41, page 71
Refer to