DS125RT410 Datasheet, PDF (1/42 Pages) Texas Instruments – DS125RT410 Low Power Multi-Rate Quad Channel Retimer

DS125RT410
www.ti.com
SNLS459 – APRIL 2011
DS125RT410 Low Power Multi-Rate Quad Channel Retimer
Check for Samples: DS125RT410
FEATURES
1
•2 Each channel independently locks to data
rates from 9.8 to 12.5 Gbps and submultiples
• Fast lock operation based on protocol-select
mode
• Low latency (~300ps)
• Adaptive equalization up to 34 dB boost at 5
GHz
• Adjustable transmit V_OD : 600 to 1300 mVp-p
• Adjustable transmit de-emphasis to -15 dB
• Typical Power Dissipation (EQ+CDR+DE): 150
mW / channel
• Programmable output polarity inversion
• Input signal detection, CDR lock
detection/indicator
• On-chip Eye Monitor (EOM), PRBS generator
• Single 2.5 V ±5% power supply
• SMBus/EEPROM configuration modes
• Operating temperature range of -40 to 85°C
• RHS 48-pin 7 mm x 7 mm package
• Easy pin compatible upgrade between
repeater and retimers
– DS100RT410 (EQ+CDR+DE): 10.3125 Gbps
– DS100DF410 (EQ+DFE+CDR+DE): 10.3125
Gbps
– DS110RT410 (EQ+CDR+DE): 8.5 - 11.3 Gbps
– DS110DF410 (EQ+DFE+CDR+DE): 8.5 - 11.3
Gbps
– DS125RT410 (EQ+CDR+DE): 9.8 - 12.5 Gbps
– DS125DF410 (EQ+DFE+CDR+DE): 9.8 - 12.5
Gbps
– DS100BR410 (EQ+DE): Up to 10.3125 Gbps
APPLICATIONS
• Front port SFF 8431 (SFP+) optical and direct •
Input signal detection, CDR lock attach copper
• Backplane reach extension, data retimer
• Ethernet: 10GbE, 1GbE
• CPRI: Line bit rate options 3–7
• Interlaken: All lane bit rates
For other data rates and data transmission
protocols, other pin-compatible devices in the
retimer family can be used.
DESCRIPTION
The DS125RT410 is four channel retimers with
integrated signal conditioning. The devices include a
fully adaptive Continuous-Time Linear Equalizer
(CTLE), Clock and Data Recovery (CDR) and
transmit De-Emphasis (DE) driver to enable data
transmission over long, lossy and crosstalk-impaired
highspeed serial links to achieve BER < 1×10^-15.
Each channel can independently lock to data rate
from 9.8 to 12.5 Gbps, and associated sub rates (div
by 2, 4 and 8) to support a variety communication
protocols. A 25 MHz reference clock is required,
which need not be synchronous with the serial data.
The programmable settings can be applied using the
SMBus (I2C) interface, or they can be loaded via an
external EEPROM. An on-chip eye monitor and a
PRBS generator allow real-time measurement of
high-speed serial data for system bring-up or field
tuning. Flow-through pinout and single power supply
make the DS125RT410 easy to use.
The device is offered in a RHS 48-pin, 7 mm x 7 mm
package with flow-through pinout for the high speed
signals.
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2011, Texas Instruments Incorporated