M21123 - Macom

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
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