Kontron AM4011, Руководство пользователя

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Functional Description AM4011
Page 2 - 4 ID 1022-1626, Rev. 1.0
P R E L I M I N A R Y
2.1.3 Intel
®
3100 Chipset
The AM4011 is equipped with the Intel® 3100 chipset which combines server-class memory and
I/O controller hub functions into a single component with the following features:
• CPU interface up to 667 MHz FSB
• Single-channel registered DDR2 SDRAM system memory interface with ECC
• Three x4 PCI Express interfaces
• Six-Channel Serial ATA 150 interfaces (only two channels are used on the AM4011)
• USB 2.0 host interface with up to four USB ports available (only two USB 2.0 ports are
used on the AM4011)
• Firmware Hub interface support
• Low Pin Count interface
• PCI Rev. 2.2 compliant with support for 32-bit/33 MHz PCI operations (not used on the
AM4011)
• Power management logic support
• Enhanced DMA controller, interrupt controller, and timer functions
• System Management Bus (SMBus) compatible with most I²C™ devices
• RTC controller
• Two 16550-compatible Serial ports (COM)
2.2 Peripherals
The following standard peripherals are available on the AM4011 board:
2.2.1 Timer
The AM4011 is equipped with the following timers:
• Real-Time Clock
The Intel® 3100 chipset integrates a MC146818A compatible real-time clock with 256
Byte CMOS RAM. The AM4011 does not include a dedicated 3V lithium battery power
source for RTC backup. Alternatively, the RTC can be powered from the management
power. But, if the power is switched off, the RTC will lose its data. All CMOS RAM data
remain stored in an additional EEPROM device to prevent data loss.
• Counter/Timer
Three 8254-style counter/timers are included on the AM4011 as defined for the PC/AT.
• Hardware delay timer for short reliable delay times
2.2.2 Watchdog Timer
The AM4011 provides a Watchdog Timer that is programmable for a timeout period ranging
from 125 ms to 256 s in 12 steps. Failure to trigger the Watchdog Timer in time results in a sys-
tem reset or an interrupt. In dual-stage mode, a combination of both interrupt and reset if the
Watchdog is not serviced. A hardware status flag will be provided to determine if the Watchdog
Timer generated the reset.
2.2.3 Battery
The AM4011 does not provide a battery. All CMOS RAM data remain stored in an additional
EEPROM device to prevent data loss.