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DP43TF Datasheet(PDF) 22 Page - Intel Corporation |
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DP43TF Datasheet(HTML) 22 Page - Intel Corporation |
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22 / 86 page  Intel Desktop Board DP43TF Technical Product Specification 22 1.8 Real-Time Clock Subsystem 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. NOTE If the battery and AC power fail, custom defaults, if previously saved, will be loaded into CMOS RAM at power-on. When the voltage drops below a certain level, the BIOS Setup program settings stored in CMOS RAM (for example, the date and time) might not be accurate. Replace the battery with an equivalent one. Figure 1 on page 11 shows the location of the battery. 1.9 Legacy I/O Controller The I/O controller provides the following features: • One serial port header • Serial IRQ interface compatible with serialized IRQ support for PCI systems • PS/2-style mouse and keyboard interfaces • Intelligent power management, including a programmable wake-up event interface • PCI power management support The BIOS Setup program provides configuration options for the I/O controller. 1.9.1 Serial Port Interface The serial port header is located on the component side of the board. The serial port supports data transfers at speeds up to 115.2 kbits/sec with BIOS support. For information about Refer to The location of the serial port header Figure 10, page 42 The serial port header signal mapping Table 14, page 44 |
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Similar Description - DP43TF |
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