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Bios Settings:
- Main
- Specify disk type
- Advanced
2.3.4
USB 2.0 Interfaces
USB strengths include:
Capability to daisy chain as many as 127 devices per interface
Fast bi-directional
Isochronous/asynchronous interface
480 MBPS transfer rate
Standardization of peripheral interfaces into a single format
Retro compatible with USB 1.1 devices
USB supports Plug and Play and hot-swapping operations (OS level). These features allow USB
devices to be automatically attached, configured and detached, without reboot or running setup.
Signal Paths:
USB0 signals are available on the faceplate from the J4 connector.
USB1 signals are available through the RTM.
Bios Settings:
Advanced
The AT8001 board supports the standard universal host controller interface (UHCI) for USB1.1. It
supports the enhanced host controller interface (EHCI) for USB2.0.
2.3.5
Serial Ports
Two fully functional serial ports are provided on the board for asynchronous serial communications.
They are 16C550 high-speed UART compatible and support 16-byte FIFO buffers for transfer rates
from 50bps to 115Kbps.
Each serial port is specified as follows:
Designation
Serial Port A (COM1)
Serial Port B (COM2)
IDE Configuration
USB Configuration
Communication Mode
RS-232
RS-232
Output Path
Front Plate RJ-45 (J5) and RTM
Onboard to IPMI only for VT100 over IPMI and over LAN
2-17
Pin
Signal
1
VCC
2
DATA-
3
DATA+
4
GND
AT8001 User's Guide
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