Product Brief
TM
Cortina Systems® IXF1024 24-Port 10/100/1000 Mbps Ethernet Media Access Controller
Product Description
The Cortina Systems® IXF1024 24-Port 10/100/1000
Mbps Ethernet Media Access Controller (IXF1024 MAC)
is a highly integrated device that allows 2:1
oversubscription, which helps lower the cost per port.
A SPI-4.2 system interface allows direct connection to
network processors and forwarding engines. Advanced
data path management techniques are used to funnel
24 Gigabits of bandwidth across a 10 Gbps system
interface. This oversubscription of bandwidth is
practical as client server networks rarely utilize full
bandwidth at the network edge.
To implement oversubscription, Cortina Systems, Inc.
(CortinaTM) has included data path management
functions such as rate limiting on a per port basis,
priority queuing, IEEE 802.3* compliant flow control,
and programmable packet filtering. The device provides
per port traffic statistics for performance monitoring,
according to RMON RFC2819.
The IXF1024 MAC is implemented in 0.13 μ CMOS
technology and is packaged in a 672 Ball Grid Array
(BGA) and requires two supply voltages, 1.2 V for the
digital core and 2.5 V for the I/O.
Product Brief Number: 303768-2.1
Copyright © 2004 - 2008 Cortina Systems, Inc.
IXF1024 MAC Block Diagram
SPI-4.2 Data & Status Interface
Group FIFO
10 Gbps System Interface
10/100/1000
Ethernet
MAC Core
Traffic Manager
Port 1 Port 24
24x Media Interface
Micro-Controller Interface
Per-Port
FIFO
RGMII
Interface
MDIO
10/100/1000
Ethernet
MAC Core
Per-Port
FIFO
RGMII
Interface
MDIO
10/100/1000
Ethernet
MAC Core
Port 2
Per-Port
FIFO
RGMII
Interface
MDIO
Product Brief Number: 303768-2.1
Copyright © 2004 - 2008 Cortina Systems, Inc.
Typical Application of the IXF1024 MAC
8x RJ-45
Connectors
Octal
10/100/1000Mbps
PHY
8x RJ-45
Connectors
8x RJ-45
Connectors
NPU
or
Forwarding
Engine
IXF1024
24x GbE
MAC
Octal
10/100/1000Mbps
PHY
Octal
10/100/1000Mbps
PHY
Modular Switch
Line Card
*Other names and brands may be claimed as the property of others.
Cortina Systems, Inc.
840 W California Ave.
Sunnyvale, CA 94086
408-481-2300
sales@cortina-systems.com
www.cortina-systems.com
Cortina is a leading supplier of intelligent
communication solutions through continuous
innovations in advanced port processing and intelligent
port connectivity to the Core, Metro, Access and
Enterprise Market Segments. With our state-of-the-art
high speed analog digital integration, we deliver a wide
suite of products that address our customers’
Cortina in Communications
performance, density and flexibility needs enabling
faster time-to-market, longer time-in-market, and
increased revenue opportunities. Working closely with
our customers to understand their system requirements
and anticipate their needs, we are creating the
foundation ingredients for new generations of services.
TM
• High integration allows practical implementations of
24, 48 and 96-port line cards
• Optimizes bandwidth usage at the network edge and
reduces cost per port
• Enables oversubscription without switch congestion
and packet loss
• Standard compliant method for flow control that
reduces control processor load
• Allocates bandwidth to priority traffic
• Connects directly to network processors or custom
forwarding engines
• Supports a variety of 8/16/32-bit configurations
• Allows line card implementations with high port count
Copyright © 2004 - 2008 Cortina Systems, Inc.
Product Brief Number: 303768-2.1
• Modular Ethernet Switching Equipment at the Network Edge
• Enterprise and Multi-service Edge Routers
Features Benefits
• 24-Port 10/100/1000 Mbps Ethernet MAC
• 2:1 Oversubscription
• Advanced Data Path Management
• Automatic Flow Control per IEEE 802.3*
• Packet Filtering and Priority Queuing
• SPI-4.2 system side interface
• Flexible CPU interface
• Typical Power Consumption - 0.25 W per channel
Key Applications
