630740A Datasheet, PDF (1/2 Pages) M/A-COM Technology Solutions, Inc. – 3.2Gbps 24 Port Reconfigurable Non-Blocking Crosspoint Switch

M21123
3.2Gbps 24 Port Reconfigurable Non-Blocking
Crosspoint Switch
The M21123 is a very low power, reconfigurable, 24 port, non-blocking
digital crosspoint switch. The device is optimized for power and
performance for data frequencies of up to 3.2Gbps, including Serial
Digital Interface (SDI) video data rates.
The M21123 is designed to provide the designer with the utmost
choice and flexibility. With 18 reconfigurable input/output ports and 6
dedicated output ports, it may be used to create any square and non-
square matrix size, from 18x6, to 12x12, to 1x23 and every size in
between.
The M21123 includes signal conditioning to compensate for losses
accumulated across long board traces, making it ideal for high speed
backplane switching applications. Each input/output port features
individually programmable trace equalization when configured as an
input, and individually programmable de-emphasis and output swing,
when configured as an output. The dedicated output ports have
individually programmable de-emphasis and swing control.
For lowest power consumption and ease of heat dissipation
management, the device may be powered from a single 1.2V supply.
For ease of design and when DC coupling to a voltage other than 1.2V
is desired, the high speed input and output ports, as well as the digital
interface, may be powered from a 1.2V, 1.8V, 2.5V or 3.3V supply.
Furthermore, the input/output ports include on-chip 50Ω termination
and are electrically isolated from one another, allowing each to be
powered from and terminated to a different voltage rail. This provides
additional flexibility as each port on the device may be DC coupled to
up-stream and down-stream devices with different voltage rails.
The M21123 is offered in a green and RoHS compliant 88-pin QFN
package.
AVDDIO0
IE & Loss of Signal Detection
DIO0
IE
DE
DE & Programmable Swing Control
Crosspoint
Core
DE
& Prog.
Swing
Ctrl
DOUT18
AVDDIO17
IE & Loss of Signal Detection
DIO17
IE
DE
DE & Programmable Swing Control
Configuration & Control Registers
DE
& Prog.
Swing
Ctrl
DOUT23
JTAG
M21123 Block Diagram
> The M21123 is Ideal For
 Signal switching
 Fanout buffers
 Backplane equalizing and
re-driving
 3G/HD/SD-SDI switchers
and routers