Intel ® Ich5 Real Time Clock; Intel ® Ich5 Sata Controller - IEI Technology IMBA-8650 User Manual

Some of the features of the PCI interface are listed below.
PCI Revision 2.3 compliant
33MHz
5V tolerant PCI signals (except PME#)
Integrated PCI arbiter supports up to seven PCI bus masters
The seven PCI bus masters are interfaces to the following onboard components:
PCI expansion slots
PCI Ethernet interface
ITE PCI-to-ISA bridge interface
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2.6.6 Intel ICH5 Real Time Clock
256 bytes of battery backed RAM is provided by the Motorola MC146818A real time clock
(RTC) integrated into the ICH5. The RTC operates on a 3V battery and 32.768KHz crystal.
The RTC keeps track of the time and stores system data even when the system is turned
off.
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2.6.7 Intel ICH5 SATA Controller
The integrated SATA controller on the ICH5 Southbridge supports four SATA drives with
independent DMA operations.
Figure 2-13: SATA
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IMBA-8650 Motherboard