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Product Overview
M21111 3.2 Gbps 17x17 and M21121 3.2 Gbps 34x34 Crosspoint Switch
The M21111/21, designed for today’s demanding video, telecom and datacom switching applications are low-power,
high-speed crosspoint switches with input equalization and integrated pattern generator/checker. With all channels
operational, the M21111 and M21121 typically consume 2.6 Watts and 4 Watts of power respectively, making them ideal
for use in low power systems. The PowerScaler™ feature provides dynamically scalable switch settings for further
power reduction. With the use of the SmartPower™ feature, unused portions of the core may be automatically turned
off without affecting the operational channels. In addition, individual input and output buffers may be manually powered
down for more power consumption control.
In order to improve signal integrity, each input buffer features programmable trace equalization (IE), which removes ISI
jitter that is usually caused by board trace skin effect losses. The input equalizer circuit opens the data eye in applica-
tions where long PCB traces and cables are used. The input equalizer can be enabled on a per channel basis, allowing
maximum flexibility. Built-in system test features simplify design, verification, and production testing of the system.
The crosspoint switches includes an integrated pseudo-random bit sequence generator (PRBS TX) and checker (RX).
The M21111 and M21121 are non-blocking switches with multi-cast and broadcast abilities. All inputs and outputs are
differential positive current mode logic (PCML) with 2.5V or 3.3V supply. The M21111 and M21121 both have a common
footprint and share the same software control methodology enabling a single PCB design to support both 17x17 and
34x34 system solutions. The devices are offered in a 404 ball, 23 mm Plastic Ball Grid Array (PBGA) package and are
RoHS compliant. Non-RoHS versions of the devices are available upon request.
Features
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Programmable per lane input equalization
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Fully non-blocking array switch matrices
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Protocol agnostic
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Support for video pathological patterns
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Low power consumption at 2.5V supply: 2.6W for
M21111 and 4W for M21121
Benefits
Allows control in removing deterministic jitter (ISI)
Ultimate flexibility for switching and multicasting signals
One device supports multiple applications
Robust solution for SDI applications
Low thermal and power management costs
Provides higher tolerance and additional design margin
Design and layout flexibility saving development costs
Optimized power consumption based on system requirements
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Extended temperature operations: 0º C to 85º C
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Common footprint for M21111 and M21121
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Smart Power™ and PowerScaler™
Specification
Switch Matrix
Power at 1.2V (W)
Package (mm)
M21111
17x17
2.6
23 mm, 404
ball PBGA
M21121
34x34
4
23 mm, 404
ball PBGA
Fig. 1 - M21111/21 Product Selection Chart
Fig. 2 - M21111/21 Device Architecture
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Product Brief
M21111/21
3.2 Gbps 17x17/34x34 Crosspoint Switch
DATA
RATE
(Gbps)
Equalizing Crosspoints
Equalizing Crosspoints; versions with CDRs available
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Product Features
Applications
•
•
•
8.50
Development Phase
Large N x N cascaded switch fabrics
Telecom & datacom switches
Storage area network (SAN) switches
Packet switching
High-speed automated test equipment
Digital video switchers/routers SMPTE
424M, 292M, 344M, 259M, DVB-ASI (270
Mbps)
6.50
•
•
•
4.25
Package (RoHS Compliant)
•
M21111
M21121
M21111: 23x23 mm, 404 ball PBGA
M21121: 23x23 mm, 404 ball PBGA
•
3.20
4
8
12
17
34
72
80
144
160
CHANNEL COUNT
Fig. 3 - Signal Conditioners and Crosspoints Matrix
Equalizer
Crosspoint
M21111/
M21121
Cable
Driver
Reclocker/
CDR
Switch Card
Input Card
Output Card
Backplane
Fig. 4 - Routing Switcher Application Diagram
Fig. 5 - 3.2 Gbps Equalized After 84”
Coax and 67.5” Microstrip
For more product information, please visit
www.mindspeed.com
www.mindspeed.com/salesoffices
General Information: (949) 579-3000
Headquarters – Newport Beach
4000 MacArthur Blvd., East Tower
Newport Beach, CA 92660-3007
M21111-BRF-001-C.pdf
© 2009 Mindspeed Technologies, Inc. All rights reserved. Mindspeed and the Mindspeed logo are
trademarks of Mindspeed Technologies. All other trademarks are the property of their respec-
tive owners. Although Mindspeed Technologies strives for accuracy in all its publications, this
material may contain errors or omissions and is subject to change without notice.
This material is
provided as is and without any express or implied warranties, including merchantability, fitness
for a particular purpose and non-infringement.
Mindspeed Technologies shall not be liable for
any special, indirect, incidental or consequential damages as a result of its use.
