DEVICE OVERVIEW 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 nonsquare 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. IE & Loss of Signal Detection AVDDIO0 DIO0 Crosspoint Core IE DE DE & Prog. Swing Ctrl DOUT18 DE & Prog. Swing Ctrl DOUT23 DE & Programmable Swing Control IE & Loss of Signal Detection AVDDIO17 DIO17 IE DE DE & Programmable Swing Control Configuration & Control Registers M21123 Block Diagram JTAG > The M21123 is Ideal For Signal switching Fanout buffers Backplane equalizing and re-driving 3G/HD/SD-SDI switchers and routers Features Benefits Customized square and non-square matrix size Per port individually programmable input equalization and output de-emphasis Per port individually programmable output swing control Compensate for signal losses across various trace lengths Per port individual powerdown control Optimized power consumption and performance for each application Optimized power consumption for variety of applications Very low power operation (65 mW per channel @1.2V) Ease of thermal management and reduced cost of operation DC and AC coupling at the input and output with integrated level shifter Integrated 50Ω input and output termination Design and layout flexibility Ease of design and layout and improved signal integrity Diagnostic and debug feature Standard 2-wire and 4-wire serial digital interface Flexible control and configuration Industrial Operation Temperature range of -40°C to 85°C Robust Operation under a wide range of conditions AVDDIO5 DIO5N DIO5P AVDDCORE DIO4N DIO4P AVDDIO4 DIO3N DIO3P AVDDIO3 AVDDIO2 DIO2N DIO2P AVDDIO1 DIO1N DIO1P AVDDCORE DIO0N DIO0P AVDDIO0 MF3 MF4 Loss of Signal detection at the input DVDDCORE AVDDIO6 DIO6P DIO6N AVDDCORE DIO7P DIO7N AVDDIO7 DIO8P DIO8N AVDDIO8 AVDDIO9 DIO9P DIO9N AVDDIO10 DIO10P DIO10N AVDDCORE DIO11P DIO11N AVDDIO11 DVDDCORE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 MF5 MF1 DOUT23P DOUT23N AVDDO22-23 DOUT22P DOUT22N AVDDCORE DOUT21P DOUT21N AVDDO20-21 DOUT20P DOUT20N DVDDIO AVDDCORE DOUT19P DOUT19N AVDDO18-19 DOUT18P DOUT18N MF0 MF2 AVDDIO12 DIO12N DIO12P AVDDCORE DIO13N DIO13P AVDDIO13 DIO14N DIO14P AVDDIO14 AVDDIO15 DIO15N DIO15P AVDDIO16 DIO16N DIO16P AVDDCORE DIO17N DIO17P AVDDIO17 MF7 MF6 T E C H N I C A L D ET A I L S 6 fixed outputs and 18 reconfigurable IOs M21123 Pinout Device Paddle GND Package (RoHS Compliant) 12mmx12mm 88 pin QFN Package 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 © 2010 Mindspeed Technologies, Inc. All rights reserved. Mindspeed and the Mindspeed logo are trademarks of Mindspeed Technologies. All other trademarks are the property of their respective 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.