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M21012/11/01

42 Mbps to 3.2 Gbps Quad Multi-Rate CDR

Overview

Description

The M21012 is a high-performance quad multi-rate clock and data recovery (CDR) array, optimized for multi-lane telecom, and datacom applications. Each channel has an independent multi-rate CDR capable of operating at data-rates between 42 Mbps and 3.2 Gbps, allowing maximum flexibility in system design. The M21011 is rated for operation in the range of 1 Gbps to 3.2 Gbps. The M21001 is rated for operation in the range of 42 Mbps to 800 Mbps. Aside from the difference in supported signal data-rates, the M21012, M21011, and M21001 are identical. Signal conditioning features include adaptive input equalization and output pre-emphasis, allowing robust reception and transmission of signals to other devices up to 60° away.

User-selectable input interface types allow DC-coupled input to CML, LVDS, and LVPECL. The outputs can also be DC-coupled to CML, LVDS and LVPECL. Frequency acquisition can be accomplished with or without an external reference clock. The built-in frequency synthesizer allows multi-rate operation, while operating with a single reference clock. The device can be controlled either through hardwired pins or an I2C-compatible interface. The hardwired mode eliminates the need for an external micro-controller, while allowing control of the key features of the device. The I2C-compatible interface allows complete control of the device features.

Features

Four independent Multi-Rate CDRs capable of running between 42 Mbps and 3.2 Gbps
Flexible DC-Coupled input interface to CML, LVPECL, and LVDS
Flexible Control through I2C-compatible interface or hardwired pins
Jitter generation 4.5 mUI, Jitter Tolerance 0.65 UI typical
Signal conditioning features for superior performance on trace lengths of up to 60?
Operation with or without a Reference Clock
Typical Total Power Consumption as low as 390 mW with all channels running
Built-in pattern generator and receiver for module and system testing

Ordering Information

Part	Description	Package	Pin Count
M21012-11P	CMOS OC-3 to 3.2G QCDR	QFN / MLF	72
M21012-12	CMOS OC-3 to 3.2G QCDR IC	QFN / MLF	72
M21012-12P	CMOS OC-3 to 3.2G QCDR IC	QFN / MLF	72
M21012-31P	CMOS OC-3 to 3.2G QCDR for video apps IC	QFN / MLF	72
M21012EVM	CMOS OC-3 to 3.2G QCDR Eval Brd	EVM	N/A
M21012G-12	CMOS OC-3 to 3.2G QCDR (rohs pkg)	QFN / MLF	72
M21012GEVM	CMOS OC-3 to 3.2G QCDR Eval Brd RoHS	n/a	n/a
M21012VEVM	CMOS OC-3 to 3.2G QCDR Eval Brd - Video	EVM	N/A