DS64BR111 Datasheet, PDF (1/39 Pages) Texas Instruments – Ultra Low Power 6.4 Gbps 2-Channel Repeaters with Input Equalization and Output De-Emphasis

DS64BR111
April 9, 2012
Ultra Low Power 6.4 Gbps 2-Channel Repeaters with Input
Equalization and Output De-Emphasis
General Description
The DS64BR111 is an extremely low power, high perfor-
mance dual-channel repeater for serial links with data rates
up to 6.4 Gbps. The DS64BR111 pinout is configured as one
bidirectional lane (one transmit, one receive channel).
The DS64BR111 features a powerful 4-stage continuous time
linear equalizer (CTLE) to provide a boost of up to +25 dB at
3.2 GHz and open an input eye that is completely closed due
to inter-symbol interference (ISI) induced by the interconnect
mediums such as an FR-4 backplane or AWG-30 cables. The
transmitter features a programmable output de-emphasis
driver with up to -12 dB and allows amplitude voltage levels
to be selected from 700 mVp-p to 1200 mVp-p to suit multiple
application scenarios.
The programmable settings can be applied via pin settings,
SMBus (I2C) protocol or an external EEPROM. When oper-
ating in the EEPROM mode, the configuration information is
automatically loaded on power up – This eliminates the need
for an external microprocessor or software driver.
Part of National's PowerWise family of energy efficient de-
vices, the DS64BR111 consumes just 65 mW/channel (typi-
cal), and allow the option to turn-off unused channels. This
ultra low power consumption eliminates the need for external
heat sinks and simplifies thermal management in active cable
applications.
Features
■ ^{Two channel repeater for up to 6.4 Gbps}
— DS64BR111 : 1x bidirectional lane
■ ^{Low 65mW/channel (typical) power consumption, with}
option to power down unused channels
■ ^{Advanced signal conditioning features}
— Receive equalization up to +25 dB
— Transmit de-emphasis up to -12 dB
— Transmit VOD control: 700 to 1200 mVp-p
— < 0.2 UI of residual DJ at 6.4 Gbps
■ ^{Programmable via pin selection, EEPROM or SMBus}
interface
■ ^{Single supply operation selectable: 2.5V or 3.3v}
■ ^{Flow-thru pinout in 4mmx4mm 24-pin leadless LLP}
package
■ ^{>5kV HBM ESD rating}
■ ^{Industrial -40 to 85°C operating temperature range}
Applications
■ ^{High-speed active copper cable modules and FR-4}
backplane in communication systems
■ ^{FC, SAS, SATA 3/6 Gbps (with OOB detection),}
InfiniBand, CPRI, OBSAI, RXAUI and many others
Typical Application
© 2012 Texas Instruments Incorporated 301567 SNLS343B
30156790
www.ti.com