MeLT792 - Metallic Line Test Chip Set (MeLT)
|The Microsemi MeLT solution is based on the ZL75816 Driver and Test Access Switch (DTAS) and the ZL79258 NGSLAC Processor. The solution is a highly integrated chip set that address the requirement of consuming a very small PCB area with a minimal number of devices.
The ZL75816 DTAS integrates a 16 channel high voltage Multiplexer, a driver that is capable of driving up to 32 lines, a switching regulator controller that with external circuitry is capable of providing the required positive and negative batteries for up to 128 lines and integrated protection that is provided per line. Two power supply reference designs are available with different current ratings to optimize cost versus power trade offs that are system dependent.
The NGSLAC Processor provides low level processing, control functions, the required A/D and D/A communication channels. One channel of the NGSLAC Processor is required for each driver.
The MeLT test algorithms are robust and field proven. Test suites with accuracies are published by Microsemi. Access switch application is gentle and will not cause a CRC error or affect data rate of the G.Fast of xDSL signal.
Docs & Specs
- MeLT Product Brief
- ZL75816 Data Sheet
- ZL79258 Data Sheet
- MeLT Hardware Design Guide
- MeLT Software Data Sheet
- MeLT Line Test Software (LE71SK7920THM)
- Multiple reference designs are available. Please consult Microsemi Sales
- Metallic Line Test Capability (MeLT) for G.Fast FTTdp
- Metallic Line Test Capability (MeLT) for xDSL DSLAM Line Cards