LE88246DLCT

LE88246DLCT is an evaluation module (EVM) designed to facilitate evaluation and design of Ethernet transceivers used within the telecom market. It is a configurable multi-rate Ethernet transceiver with four integrated physical coding sub-layer (PCS) rate modules, allowing users to select any combination of 10 Mbps, 100 Mbps, 1000 Mbps and 10/100/1000 Mbps. The LE88246DLCT can be easily configured to evaluate the performance and timing of Ethernet physical layer devices used within telecom applications such as digital subscriber line (DSL) modems or digital subscriber line access multiplexer (DSLA).

The LE88246DLCT combines the same basic components of a multi-rate 10/100/1000 Mbps transceiver, with the functions of a PCS core, a linear-phase device, a pulse shape filter, a packet tracking FIFO, and a polyphase filter. This allows the LE88246DLCT to provide nearly equal performance across all of the targeted interface data rates, making it ideal for use in telecom applications. Aside from providing a flexible interface between multiple media connectivity devices, the LE88246DLCT also provides enhanced timing control that can be used to accurately adjust the timing between two different data devices.

The LE88246DLCT is also engineered with built-in burst mode capabilities, allowing for the transmission of extended frames over the same link. The built-in burst mode control features can be used to provide enhanced functionality in telecom applications, such as burst mode transmission of extended MPEG frames. This feature of the LE88246DLCT can be used to extend the transmission range of standard Ethernet-based routers, switches, and DSL modems, resulting in higher throughput speeds and improved communications.

The working principle of the LE88246DLCT is based on a multi-rate receiver that operates by adjusting its internal circuitry to match the incoming signal. The LE88246DLCT contains two sets of internal registers, one set for storing the current state of the circuit and another set for storing the target state of the circuit. As the incoming signal changes in rate or encoded message, the first set of registers (the current state) is read and modified to match the target state of the second set of registers. This process is carried out within a reasonable amount of time, allowing the LE88246DLCT to maintain a constant bit rate and encoding rate.

The LE88246DLCT also contains logic circuitry that utilizes the on-chip PCS core and packet tracking FIFO to detect errors and switch the connection from one rate to the other. This feature is especially useful for telecom applications, as it allows users to switch from one data transport rate to another without any manual intervention. This is particularly useful for applications that involve unreliable connections, as the LE88246DLCT can detect any errors and switch the connection to a more reliable transport rate.

Overall, the LE88246DLCT is a versatile and highly configurable evaluation module capable of meeting the requirements of a wide range of telecom applications. Its on-chip PCS core and packet tracking FIFO allow the module to accurately transmit and receive data, while its built-in burst mode capabilities enable it to transmit extended data frames over the same link, resulting in higher throughput rates and improved communications.

The LE88246DLCT is a great option for telecom applications, offering a highly flexible solution for testing and design development. Its configurable multi-rate capabilities and enhanced timing control features provide users with the ability to quickly adapt to different telecom protocols and standards, while its burst mode capabilities enable it to provide improved transmission of extended data frames. All of these features make the LE88246DLCT an ideal solution for designers, developers, and engineers working within the telecom market.