IEI Integration NANO-9452 v4.01 - Manual (Page 36)

NANO-9452 EPIC Motherboard
Page 18
2.6.6 Intel
®
ICH7M Real Time Clock
256 bytes of battery backed RAM is provided by the Motorola MC146818A real time clock
(RTC) integrated into the ICH7M. 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.
2.6.7 Intel
®
ICH7M SATA Controller
The integrated SATA controller on the ICH7M Southbridge supports two SATA drives on
the NANO-9452 with independent DMA operations. SATA controller specifications are
listed below.
 Supports two SATA drives
 Supports 1.5 Gb/s data transfer speeds
 Supports Serial ATA Specification, Revision 1.0a
2.6.8 Intel
®
ICH7M USB Controller
Up to six high-speed, full-speed or low-speed USB devices are supported by the ICH7M
on the NANO-9452. High-speed USB 2.0, with data transfers of up to 480MB/s, is enabled
with the ICH7M integrated Enhanced Host Controller Interface (EHCI) compliant host
controller. USB full-speed and low-speed signaling is supported by the ICH7M integrated
Universal Host Controller Interface (UHCI) controllers.
2.7 PCIe Bus Components
2.7.1 PCIe Bus Overview
The PCIe bus is connected to components listed below:
 Two PCIe GbE Realtek LAN chipsets
 One Mini PCIe socket
2.7.2 Realtek RTL8111E GbE interface
The Realtek RTL8111E (PCIe) GbE controller is a 10/100/1000BASE-T Ethernet LAN
controller. The RTL8111E combines a triple-speed IEEE 802.3 compliant Media Access