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MAX9240AGTM/V+T Application Field And Working Principle

Introduction

MAX9240AGTM/V+T is a two-channel deserializer (18- to 14-bit) that accepts a single-ended or differential clock. It offers a pipelined architecture that allows data to enter the serial port at rates up to 10 Gbps, multiplexing the data onto an LVDS or CML parallel bus at low voltage differential signaling (LVDS) or current-mode logic (CML) parallel bus rates. MAX9240AGTM/V+T is capable of transferring data to a wide range of devices on LVDS or single-ended standard logic buses, such as optical transceivers, FPGAs, ASICs, and other general-purpose logic devices.

Applications

MAX9240AGTM/V+T Serializers and deserializers (SERDES) provide solutions for high-speed backplane serial data communications, especially in telecommunications and data communications, including interfaces for backplane interconnects such as optical fibers, digital televisions, and Gigabit Ethernet. With its wide range of operating data rates, it can be used in various other applications, such as for automotive, medical, broadcast and network applications.

The MAX9240AGTM/V+T SERDES is designed to minimize power and space, which makes them ideal for a variety of applications. Some of those include embedded systems, network security appliances, enterprise routers and switches, video and audio equipment, gaming consoles, and a variety of other embedded applications.

Working Principle

The working principle of the serializer and deserializer (SERDES) is to convert a high speed digital signal between a serial data stream and a parallel data stream. A serializer is responsible for transforming a parallel data stream into a serial data stream and the deserializer is responsible for transforming a serial data stream back to a parallel data stream. The serializer and deserializer are also known as a transceiver, as they can also change data both in parallel, transforming signals between serial and parallel, as well as between differential, single ended and other formats.

The MAX9240AGTM/V+T Serializer/Deserializer functions by taking the serial data stream and the clock signal, which is received and framed into two eighteen-bit wide parallel data streams and a two-bit wide differential clock stream. The serial data and clock stream from the SERDES interface is inverted; when the SERDES is clocked, the differential clock signal changes polarity to signify the change in data on each of the eighteen-bit data stream. This enables the parallel data and clock to transition between logic states without false triggering.

The parallel data streams are transmitted to the LVDS and CML parallel buses. The LVDS uses differential signaling, while the CML uses single-ended signaling. In CML, the voltage swings are usually between zero volts and five volts. The MAX9240AGTM/V+T receives data from the parallel bus at low-voltage differential signaling (LVDS) or current-mode logic (CML) parallel bus rates. The data is multiplexed onto an LVDS or CML bus, and then demultiplexed onto two eighteen-bit wide parallel data streams. The MAX9240AGTM/V+T can support data rates up to 10 Gbps.

Conclusion

The MAX9240AGTM/V+T Serializers and Deserializers (SERDES) provide solutions for high-speed backplane serial data communications for a variety of applications. With its wide range of operating data rates, it can be used in various applications, such as embedded systems, network security appliances, enterprise routers and switches, video and audio equipment, gaming consoles, and a variety of other embedded applications. The MAX9240AGTM/V+T Serializer/Deserializer functions by taking the serial data stream and clock signal, which is received and framed into two eighteen-bit wide parallel data streams and a two-bit wide differential clock stream. The MAX9240AGTM/V+T can support data rates up to 10 Gbps.

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