• 132 MBytes/sec (33 MHz) burst data rate across the PCI bus
• Self-configuring design for plug and go operation
• FDE design supports cumulative 80 Mbits/sec system throughput for switched Ethernet networks (20 Mbits/sec per port)
• Efficient bus mastering design minimizes CPU utilization
• Predictive Pipelining for greater throughput with lower CPU utilization
• Four connectors support four separate network segments at full cable bandwidth
• Four sequential node IDs may be customized at load time
• Drivers for all popular networks
• Limited lifetime warranty

Cogent offers Ethernet products to meet every adapter and repeater environment, including 10BASE-2, 10BASE-T, 100BASE-TX, 100BASE-T4, and 100BASE-FX (fiber).

EM964 PCI Quartet is a 32-bit bus mastering Ethernet adapter which simply and cost-effectively optimizes PCI Local Bus server performance. The EM964 PCI Quartet adapter can support up to four network segments on separate channels, all at full cable bandwidth.

The Advanced Solution for Expanding Networks

Like most PC bus architectures, PCI is electronically limited by the number of slots it can support. PCI machines can have a maximum of five slots, but many have only two or three PCI slots. This restricts the number of network segments a PCI server can handle. The Quartet's four-channel design solves this problem and gives PCI servers the power of four Ethernet adapters in a single board. Quartet uses an on-board PCI-to-PCI bridge to extend the machine's internal PCI bus. This minimizes the load on the PCI bus and makes it possible for EM964 PCI Quartet to support all four network channel at full cable bandwidth. Each channel is fully independent, and transparent to BIOS except during configuration.

Full Duplex Ethernet (FDE) capability can be easily enabled for each channel to double the cumulative system throughput in switched Ethernet networks. The Quartet adapter has completely independent transmit and receive circuitry for true 20 Mbits/sec. operation on each channel at Minimum Interframe Spacing. Cumulative throughput with FDE on all four channels is 80 Mbits/sec. Full Duplex Ethernet servers using the Quartet adapter can handle receive and transmit requests simultaneously. As a result, workstations can take advantage of faster service.

Product Specifications

Systems Supported
PCI Local Bus servers, based on Intel,DEC Alpha, MIPS processors

Bus Interface
PCI, 32-bit bus master

Ethernet Controller
DECchip 21040 LAN coprocessor chip

Hardware Interrupts
PCI interrupt A, supports shared interrupts

Base I/O or Memory Address
Assigned by BIOS

PCI Configuration Space Supports DWORD, WORD, and BYTE access

Reliability
Calculated MTBF >100,000 hours

Power Requirements
+5 volts @ 1.5 Amp. max

Environmental Operating Range
Temperature: 0 C to 50 C
Relative Humidity: 5% to 85% non-condensing
Altitude: 3000m maximum

Interface Connections
RJ-45 (4)
BNC (4)

Dimensions
9.75" x 4" (conforms to PCI Long Card specification)

Standards Compliance
IEEE 802.3 10BASE-T
IEEE 802.3 10BASE-2

Drivers Available
NetWare 3.x, 4.x, DOS NDIS, OS/2 NDIS, OS/2 Warp, IBM LAN Server, Windows NT for DEC, Alpha

Diagnostic LEDs
Link Integrity for each channel
Network Activity for each channel

Warranty
All eMASTER+ series adapters are protected by a limited lifetime warranty

Ordering Information