Microsemi unveils Synchronous Ethernet chip for OTN

Microsemi Corp. (NASDAQ: MSCC) has announced the availability of what it claims is the world's first single-chip, standards-compliant Synchronous Ethernet (SyncE) timing device to enable the transmission of SyncE over Optical Transport Network (OTN) channels without the need for additional rate conversion phased locked loops (PLLs).

Jan 23rd, 2012

Microsemi Corp. (NASDAQ: MSCC) has announced the availability of what it claims is the world's first single-chip, standards-compliant Synchronous Ethernet (SyncE) timing device to enable the transmission of SyncE over Optical Transport Network (OTN) channels without the need for additional rate conversion phased locked loops (PLLs).

The new ZL30153 and ZL30154 timing devices support Ethernet clock rates and all OTN clock rates. Microsemi says its previous generation SyncE devices, as well as currently available competitive products, only support telecom and Ethernet clock rates.

Using Microsemi's single-chip device for both SyncE and OTN applications enables telecom equipment manufacturers to support multiple services over a single network at a lower cost, the company claims. The new ZL30153 and ZL30154 SyncE timing devices support flexible input and output rates and are fully compliant to SyncE standards.

The ZL30154 timing card device provides two independent digital PLLs for applications that require independent transmit and receive timing paths, while the ZL30153 device uses a single digital PLL for clock synchronization. The programmable digital PLLs in both devices synchronize to any clock rate from 1 Hz to 750 MHz, which enables the one-pulse-per-second GPS signal to be used directly as an input reference. In addition, the programmable synthesizers can generate any clock rate from 1 Hz to 750 MHz.

Delivering high performance at a lower cost versus the competition, Microsemi says the new devices require only an inexpensive temperature controlled crystal oscillator to achieve full compliance with ITU-T Recommendation G.8262.

For more information on communications ICs and suppliers, visit the Lightwave Buyer’s Guide.

More in Optical Tech