DS3105 datasheet(1/110 Pages) MAXIM

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Giải thích chi tiết về linh kiện	Line Card Timing IC

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Preliminary. Subject to Change Without Notice.

Confidential. Document Issued Under Non-Disclosure Agreement. Confidential. Document Issued Under Non-Disclosure Agreement.

1 of 110

REV: 061507

GENERAL DESCRIPTION

The DS3105 is a low-cost, feature-rich timing IC for

telecom line cards. Typically the device accepts two

reference clocks from dual redundant system timing

cards. The DS3105 continually monitors both inputs

and performs automatic hitless reference switching if

the primary reference fails. The highly programmable

DS3105 supports numerous input and output

frequencies

including

frequencies

required

for

SONET/SDH, Synchronous Ethernet (1G, 10G and

100Mb/s), wireless basestations and CMTS systems.

PLL bandwidths from 18 Hz to 400 Hz are supported,

and a wide variety of PLL characteristics and device

features can be configured to meet the needs of

many different applications.

The DS3105 register set is backward compatible with

Semtech’s ACS8525 line card timing IC. The DS3105

pinout is similar but not identical to the ACS8525.

APPLICATIONS

SONET/SDH, Synchronous Ethernet, PDH and Other

Line Cards in WAN Equipment Including MSPPs,

Ethernet Switches, Routers, DSLAMs, and Wireless

Base Stations.

FUNCTIONAL DIAGRAM

FEATURES

Advanced DPLL Technology

Programmable PLL bandwidth: 18 Hz to 400 Hz

Hitless Reference Switching, Automatic or Manual

Holdover on Loss of All Input References

Frequency Conversion Among SONET/SDH, PDH,

Ethernet, Wireless and CMTS Rates

5 Input Clocks

Two CMOS/TTL (≤125 MHz)

Two LVDS/LVPECL/CMOS/TTL (≤156.25 MHz)

Backup Input (CMOS/TLL) in Case of Complete

Loss of System Timing References

Three Optional Frame Sync Inputs (CMOS/TTL)

Continuous Input Clock Quality Monitoring

Numerous Input Clock Frequencies Supported

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

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

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

- Frame Sync: 2 kHz, 4 kHz, 8 kHz

- Custom: Any Multiple of 2 kHz up to 131.072 MHz,

Any Multiple of 8 kHz up to 155.52 MHz

2 Output Clocks

One CMOS/TTL Output (≤125 MHz)

One LVDS/LVPECL Output (≤312.50 MHz)

Two Optional Frame Sync Outputs: 2 kHz, 8 kHz

Numerous Output Clock Frequencies Supported

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

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

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

- Other: 10, 10.24, 13, 30.72 MHz, plus other

frequencies available upon request

- Frame Sync: 2 kHz, 8 kHz

- Custom Clock Rates: Any Multiple of 2 kHz up to

77.76 MHz, Any Multiple of 8 kHz up to 311.04 MHz

General

Suitable line card IC for stratum 3E/3/4, SMC, SEC

Internal Compensation for Master Clock Oscillator

SPI Processor Interface

1.8V Operation with 3.3V I/O (5V tolerant)

Industrial Operating Temperature Range

ORDERING INFORMATION

PART

TEMP

RANGE

PACKAGE

DS3105LN

-40 to 85

°C

LQFP64

DS3105LN+

-40 to 85

°C

LQFP64, RoHS compliant

DS3105

Line Card Timing IC

PRELIMINARY DATASHEET

www.maxim-ic.com

local

oscillator

control status

DS3105

IC4

OC3

LVDS/LVPECL

or CMOS/TTL

IC3

FSYNC

MFSYNC

IC5

IC6

IC9

OC6 LVDS/LVPECL

SYNC1

SYNC2

SYNC3

Số phần tương tự - DS3105

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Maxim Integrated Produc...	DS3105	595Kb / 120P	Line Card Timing IC Rev 3; 5/09
TT Electronics.	DS3105	280Kb / 1P	Thermocouple Compensating Cable
Maxim Integrated Produc...	DS3105LN	595Kb / 120P	Line Card Timing IC Rev 3; 5/09
	DS3105LN+	595Kb / 120P	Line Card Timing IC Rev 3; 5/09
	DS3105	595Kb / 120P	Line Card Timing IC Rev 3; 5/09

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Mô tả tương tự - DS3105

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