ds3104-se Maxim Integrated Products, Inc., ds3104-se Datasheet

ds3104-se

Manufacturer Part Number

ds3104-se

Description

Line Card Timing Ic With Synchronous Ethernet Support

Manufacturer

Maxim Integrated Products, Inc.

Datasheet

1.DS3104-SE.pdf (135 pages)

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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.

The DS3104-SE is a low-cost, feature-rich timing IC for

line cards with synchronous Gigabit Ethernet (GbE),

10-Gigabit Ethernet (10GbE), and Fast Ethernet ports.

ITU-T recommendation G.8261 (formerly G.pactiming)

specifies that network synchronization can be carried

over packet links by synchronizing the bit clock of the

physical layer as is currently done on SONET/SDH

links. The DS3104-SE enables synchronization in

Ethernet line cards in both the transmit and receive

directions.

In the transmit direction, the device accepts traditional

SONET/SDH system clocks such as 19.44MHz from

redundant

frequency-locked xMII clock rates, such as the 125MHz

GTX_CLK for GbE GMIIs. Each Ethernet PHY then

synthesizes a transmit bit clock that is frequency-locked

to the xMII clock, and thus to the system clock and

network clock. In the receive direction, each PHY

divides down the recovered bit clock to produce the

receive xMII clock. The DS3104-SE accepts the xMII

clock from any of several Ethernet ports and forwards a

frequency-locked system clock, such as 19.44MHz, to

the system timing cards. SONET/SDH ports are also

supported.

Line Cards with Any Mix of Synchronous Ethernet and

+Denotes a lead-free/RoHS-compliant package.

Rev: 072407

DS3104GN

DS3104GN+

SONET/SDH Ports in WAN Equipment Including

MSPPs, Ethernet Switches, Routers, DSLAMs, and

Wireless Base Stations

PART

system

________________________________________________________

TEMP RANGE

-40qC to +85qC

timing

Ordering Information

General Description

cards

Applications

PIN-PACKAGE

81 CSBGA (10mm)

and

synthesizes

Synchronous Ethernet Support

Line Card Timing IC with

Timing Card to Line Card Path

i Two Input Clocks from Master and Slave Timing

i Optional Frame Sync Inputs and Outputs

i Continuous Input Clock Quality Monitoring

i Hitless Reference Switching, Automatic or Manual

i Holdover on Loss of All Inputs

i Programmable PLL Bandwidth, 0.1Hz to 400Hz

i Frequency Conversion Between SONET/SDH

i Up to 7 Output Clocks: 3 CMOS/TTL (^ 125MHz),

Line Card to Timing Card Path

i Up to 8 Input Clocks: 4 CMOS/TTL (^ 125MHz)

i Hitless Reference Switching, Automatic or Manual

i Frequency Conversion Between Ethernet

i Two Output Clocks to Master and Slave Timing

General

i Suitable Line Card IC for Stratum 3/3E/4, SMC,

i Numerous Input Clock Frequencies Supported

i Numerous Output Clock Frequencies

i Internal Compensation for Master Clock

i SPI™ Processor Interface

i 1.8V Operation with 2.5V/3.3V I/O (5V Tolerant)

Cards (LVDS/LVPECL or CMOS/TTL)

SONET/SDH: 6.48, N x 19.44, N x 51.84MHz

PDH: N x DS1, N x E1, N x DS2, DS3, E3

Other: 10, 10.24, 13, 30.72MHz

Frame Sync: 2kHz, 8kHz

Custom Clock Rates: Any Multiple of 2kHz Up to

Oscillator

Rates and Ethernet MII/GMII/XGMII Rates

2 LVDS/LVPECL (^ 312.50MHz), and 2 Dual

CMOS/TTL and LVDS/LVPECL

and 4 LVDS/LVPECL/CMOS/TTL (^ 156.25MHz)

MII/GMII/XGMII and SONET/SDH Rates

Cards (CMOS/TTL or LVDS/LVPECL)

SEC

Ethernet xMII: 2.5, 25, 125, 156.25MHz

SONET/SDH: 6.48, N x 19.44, N x 51.84MHz

PDH: N x DS1, N x E1, N x DS2, DS3, E3

Frame Sync: 2kHz, 4kHz, 8kHz

Custom: Any Multiple of 2kHz Up to 131.072MHz,

Supported

Ethernet xMII: 2.5, 25, 125, 156.25, 312.5MHz

Any Multiple of 8kHz Up to 155.52MHz

77.76MHz, Any Multiple of 8kHz Up to

311.04MHz

Maxim Integrated Products

DS3104-SE

Features

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