DS2174 Datasheet, PDF (1/24 Pages) Maxim Integrated Products – EBERT

www.maxim-ic.com
FEATURES
§ Generates and detects digital patterns for
analyzing and trouble-shooting digital
communications systems
§ Programmable polynomial length and
feedback taps for generation of any
pseudorandom patterns up to 2³² - 1; up to 32
taps can be used in the feedback path
§ Programmable, user-defined pattern registers
for long repetitive patterns up to 512 bytes in
length
§ Large 48-bit count and bit error count registers
§ Software-programmable bit error insertion
§ Fully independent transmit and receive paths
§ 8-bit parallel-control port
§ Detects polynomial test patterns in the
presence of bit error rates up to 10^-2
§ Programmable for serial, 4-bit parallel, or 8-bit
parallel data interfaces
§ Serial mode clock rate is 155MHz; byte mode
is 80MHz for a net 622Mbps; OC-3
§ Available in 44-pin PLCC
ORDERING INFORMATION
DS2174Q 44-Pin PLCC 0°C to +70°C
DS2174QN 44-Pin PLCC -40°C to +85°C
DS2174
EBERT
PIN ASSIGNMENT
RDAT3 7
RDAT4 8
RDAT5 9
RDAT6 10
RDAT7 11
GND 12
A0 13
A1 14
A2 15
A3 16
CS 17
DS2174
39 D2
38 D1
37 D0
36 TDAT7
35 TDAT6
34 GND
33 TDAT5
32 TDAT4
31 TDAT3
30 TDAT2
29 GND
APPLICATIONS
§ Routers
§ Channel Service Units (CSUs)
§ Data Service Units (DSUs)
§ Muxes
§ Switches
§ Digital-to-Analog Converters (DACs)
§ CPE Equipment
§ Bridges
§ Smart Jack
DESCRIPTION
The DS2174 enhanced bit error rate tester (EBERT) is a software-programmable test-pattern generator,
receiver, and analyzer capable of meeting the most stringent error-performance requir ements of digital
transmission facilities. It features bit-serial, nibble-parallel, and byte-parallel data interfaces, and
generates and uniquely synchronizes to pseudorandom patterns of the form 2ⁿ - 1, where n can take on
values from 1 to 32, and user-defined repetitive patterns of any length up to 512 octets.
Note: 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,
click here: http://www.maxim-ic.com/errata.
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