Description 17
IDE Controller
IDE is a 16 bit interface for intelligent disk drives with disk controller electronics onboard. The
PCI/ISA/IDE Accelerator, also known as PIIX4e, is a multifunction device on the server board that
acts as a PCI based Fast IDE controller. The device controls:
• PIO and IDE DMA/bus master operations
• Mode 4 timings
• Transfer rates up to 33 MB/s
• Buffering for PCI/IDE burst transfers
• Master/slave IDE mode
• Up to two devices per channel; two channels, IDE0 and IDE1
✏NOTE
18 inch maximum length of IDE cable on each channel: You can connect
an IDE signal cable, up to a maximum of 18 inches each, to each
IDE connector on the server board. Each cable can support two devices, one
at the end of the cable and one 6 inches from the end of the cable.
Network Controller
The server board includes a 10BASE-T/100BASE-TX network solution based on the Intel 82559
single chip Fast Ethernet PCI Bus Controller. As a PCI bus master, the controller can burst data at
up to 132 MB/s. The controller contains two receive and transmit FIFO buffers that prevent data
overruns or underruns while waiting for access to the PCI bus. The controller has the following:
• 32 bit PCI bus master interface (direct drive of bus), compatible with PCI Bus Specification,
Revision 2.1
• Chained memory structure with improved dynamic transmit chaining for enhanced
performance
• Programmable transmit threshold for improved bus utilization
• Early receive interrupt for concurrent processing of receive data
• On-chip counters for network management
• Autodetect and autoswitching for 10 or 100 Mbps network speeds
• Support for both 10 Mbps and 100 Mbps networks, capable of full or half duplex, with
back-to-back transmit at 100 Mbps
The network status LEDs on the server board indicate:
• Transmit/receive activity on the LAN
• Valid link to the LAN
• 10/100 Mbps transfer mode