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IDE Controller
IDE is a 16-bit interface for intelligent disk drives with AT disk controller
electronics onboard. The PCI/ISA/IDE Accelerator, also known as PIIX4, is
a multifunction device on the motherboard 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 22 MB/sec
•
Buffering for PCI/IDE burst transfers
•
Master/slave IDE mode
•
Up to two drives per channel; two channels, IDE0 and IDE1
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 motherboard.
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 motherboard includes an integrated NIC, which is the Intel 82557 PCI
LAN Controller for 10 or 100 Mbps TX Fast Ethernet networks. The
network ID is stored in an EEPROM on the motherboard. As a PCI bus
master, the controller can burst data at up to 133 MB/sec. 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 motherboard indicate:
•
Transmit/receive activity on the LAN
•
Valid link to the LAN
•
10/100 Mbps transfer mode
R440LX Server Motherboard Product Guide
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