DESCRIPTION

· The MAX24188 is a low-cost IEEE 1588 clock designed as a central time base in multiport systems.

· It provides a common time and frequency reference for timestampers in systems like boundary or transparent clocks.

· The device can be adjusted by system software to synchronize time and frequency with an external 1588 master.

· It adjusts output frequency and time alignment signals to maintain synchronization across all 1588 elements in the system.

· It can function as a standalone central timing function or be used with Maxim’s clock synchronization ICs in multimode systems.

FEATURES

· Complete hardware support for IEEE 1588.

· Flexible block for any 1588 architecture, enabling ordinary, boundary, and transparent clocks.

· Steered by software to follow an external 1588 master.

· High time resolution (2-8ns) and period resolution (2-32ns).

· Accurate input timestamp (1ns) and output edge placement (1ns).

· Three time/frequency controls: direct time write, time adjustment, and high-resolution frequency adjustment.

· Programmable clock and time-alignment I/O to synchronize all 1588 elements.

· Output clock signal (125MHz/N, 1 ≤ N ≤ 255) and time alignment signal (e.g., 1PPS).

· Frequency-lock to an input clock signal and timestamp input time alignment signal.

· Input event timestamper detects incoming time alignment or clock edges.

· Flexible programmable event generator (PEG) for 1PPS or various clock signals.

· Built-in support for telecom equipment timing architectures with dual redundant timing cards.

· Full support for switches and routers to act as transparent or boundary clocks.

· Full support for 1588 and synchronous Ethernet.

· Operates from 10MHz, 12.8MHz, 25MHz, or 125MHz reference clock.

· SPI™ processor interface.

· 1.2V operation with 3.3V I/O.

APPLICATIONS

· Central time-clock for 1588-enabled equipment with timestamping on multiple ports.

· Wireless base stations and controllers.

· Switches, routers, DSLAMs, PON equipment.

· Pseudowire circuit emulation equipment.

· Test and measurement systems.

· Medical, industrial, and factory automation equipment.