MAX24288 Datasheet, PDF (1/4 Pages) Maxim Integrated Products – IEEE 1588 Packet Timestamper and Clock and 1Gbps Parallel-to-Serial MII Converter

ABRIDGED DATA SHEET ^{19-5931; Rev 0; 6/11}
MAX24288
IEEE 1588 Packet Timestamper and Clock
and 1Gbps Parallel-to-Serial MII Converter
General Description
Highlighted Features
The MAX24288 is a flexible, low-cost IEEE 1588
clock and timestamper with an SGMII or 1000BASE-X
serial interface and a parallel MII interface that can
be configured for GMII, RGMII, or 10/100 MII. The
device provides all required hardware support for
high-accuracy time and frequency synchronization
using the IEEE1588 Precision Time Protocol. In both
the transmit and receive directions 1588 packets are
identified and timestamped with high precision.
System software makes use of these timestamps to
determine the time offset between the system and its
timing master. Software can then correct any time
error by steering the device’s 1588 clock subsystem
appropriately. The device provides the necessary I/O
to time-synchronize with a 1588 master elsewhere in
the same system or to be the master to which slave
components can synchronize.
In addition, the MAX24288 is a full-featured, gigabit
parallel-to-serial MII converter. It provides full SGMII
revision 1.8 compliance and also interfaces directly to
1Gbps 1000BASE-X SFP optical modules.
Applications
1588-Enabled Equipment with 1G Ethernet Ports
Wireless Base Stations and Controllers
Switches, Routers, DSLAMs, PON Equipment
Pseudowire Circuit Emulation Equipment
Test and Measurement Systems
Industrial and Factory Automation Equipment
Medical Equipment
♦ Complete Hardware Support for IEEE 1588
♦ Ordinary, Boundary, and Transparent Clocks
♦ Flexible Block for Any 1588 Architecture
♦ 1588 Clock Hardware
♦ Steerable by Software with 2^-8ns Time
Resolution and 2^-32ns Period Resolution
♦ 1ns Input Timestamp Accuracy and Output
Edge Placement Accuracy
♦ Three Time/Frequency Controls: Direct Time
Write, Time Adjustment, and High-Resolution
Frequency Adjustment
♦ Programmable Clock and Time-Alignment I/O
♦ Input Event Timestamper Detects Incoming
Time Alignment (e.g., 1 PPS) or Clock Edges
♦ Output Event Generator Provides Output Clock
Signal or Time Alignment Signal
♦ Built-In Support for Telecom Equipment Timing
Architecture with Dual Redundant Timing Cards
♦ 1588 Timestamping Hardware
♦ 1588 v1 and v2 Packets, Transmit and Receive
♦ Packet Classifier Supports 1588 Over Ethernet,
IPv4/UDP, IPv6/UDP, or MPLS and Is
Programmable for More Complex Stacks
♦ Supports 802.1Q VLAN Tags and MAC-in-MAC
♦ One-Step Operation: On-the-Fly Timestamp
Insertion or Transparent Clock Corrections; No
Need for Follow-Up Packets
♦ Can Insert All Timestamps, Receive and
Transmit, Into Packets for Easy Software Access
♦ Optional Two-Step Operation
PART
Ordering Information
TEMP RANGE PIN-PACKAGE
MAX24288ETK+
-40°C to +85°C
68 TQFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
SPI is a trademark of Motorola, Inc.
♦ Parallel-to-Serial MII Conversion
♦ Bidirectional Wire-Speed Interface Conversion
♦ Serial: 1000BASE-X or SGMII v1.8 (4, 6, or 8 Pin)
♦ Parallel: GMII, RGMII, or 10/100 MII
♦ Translates Link Speed and Duplex Mode
Negotiation Between MDIO and SGMII PCS
♦ Full Support for 1588 + Synchronous Ethernet
♦ MDIO and SPI™ Interfaces
♦ 1.2V Operation with 3.3V I/O
_________________________________________________________ Maxim Integrated Products 1
Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple
revisions of any device may be simultaneously available through various sales channels. For information about device
errata, go to: www.maxim-ic.com/errata. For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.