DS125BR800 Datasheet, PDF (1/59 Pages) Texas Instruments – Low-Power 12.5-Gbps 8-Channel Repeater With Input Equalization and Output De-Emphasis

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DS125BR800
SNLS426E – AUGUST 2012 – REVISED JANUARY 2015
DS125BR800 Low-Power 12.5-Gbps 8-Channel Repeater With Input Equalization and
Output De-Emphasis
1 Features
•1 Comprehensive Family, Proven System Inter-
Operability
– DS125BR111: One-Lane Repeater
– DS125BR401: Four-Lane Repeater
– DS125BR800: Eight-Channel Repeater
– DS125MB203: Two-Port 2:1/1:2 Mux/Switch
– DS125DF410: Four-Channel Retimer With
CDR
• Low 65-mW/Channel (Typ) Power Consumption,
With Option to Power Down Unused Channels
• "Non-Limiting" Output for PCIe and 10G-KR Link
Training Support
• Advanced Signal Conditioning Features
– Receive Equalization up to 30 dB at 6.25 GHz
– Transmit De-emphasis up to –12 dB
– Transmit Output Voltage Control: 700 mV to
1300 mV
• Programmable Via Pin Selection, EEPROM, or
SMBus Interface
• Single Supply Voltage: 2.5 V or 3.3 V (Selectable)
• −40°C to 85°C Operating Temperature Range
• 3-kV HBM ESD Rating
• Flow-Thru Pinout: 54-Pin WQFN (10-mm × 5.5-
mm, 0.5-mm Pitch)
• Supported Protocols
– sRIO, Infiniband, Interlaken, CPRI, OBSAI
– Other Proprietary Interface up to 12.5 Gbps
2 Applications
• SAS/SATA (up to 6 Gbps), Fibre Channel (up to
10GFC)
• PCIe Gen-3/2/1, 10G-KR, 10GbE, XAUI, RXAUI
3 Description
The DS125BR800 is an extremely low-power high-
performance multiprotocol repeater/redriver designed
to support eight channels of PCIe Gen-3/2/1, 10G-
KR, and other high-speed interface serial protocols
up to 12.5 Gbps. The continuous time linear equalizer
(CTLE) of the receiver provides a boost of up to
+30 dB at 6.25 GHz (12.5 Gbps) in each of its eight
channels and can open an input eye that is
completely closed due to inter symbol interference
(ISI) induced by interconnect medium such as 30in+
backplane traces or 8m+ copper cables, hence
enabling host controllers to ensure an error-free end-
to-end link. The transmitter provides a de-emphasis
boost of up to –12 dB and output voltage amplitude
control from 700 mV to 1300 mV to allow maximum
flexibility in the physical placement within the
interconnect channel.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
DS125BR800
WQFN (54)
10.00 mm × 5.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application
System Board
Root Complex
8
TX
Connector
8
RX
DS125BR800
8
RX
DS125BR800
Connector
8
TX
BoTarardce
ASIC
or
PCIe EP
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.