DS32EL0421_15 Datasheet, PDF (1/32 Pages) Texas Instruments – DS32EL0421 , DS32ELX0421 125 - 312.5 MHz FPGA-Link Serializer with DDR LVDS Parallel Interface

DS32EL0421, DS32ELX0421
www.ti.com
SNLS282F – MAY 2008 – REVISED APRIL 2013
DS32EL0421 , DS32ELX0421 125 - 312.5 MHz FPGA-Link Serializer with DDR LVDS
Parallel Interface
Check for Samples: DS32EL0421, DS32ELX0421
FEATURES
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•2 5-bit DDR LVDS Parallel Data Interface
• Programmable Transmit De-emphasis
• Configurable Output Levels (V_OD)
• Selectable DC-balanced Encoder
• Selectable Data Scrambler
• Remote Sense for Automatic Detection and
Negotiation of Link Status
• On Chip LC VCOs
• Redundant Serial Output (ELX device only)
• Data Valid Signaling to Assist with
Synchronization of Multiple Receivers
• Supports AC- and DC-coupled Signaling
• Integrated CML and LVDS Terminations
• Configurable PLL Loop Bandwidth
• Programmable Output Termination (50Ω or
75Ω).
• Built-in Test Pattern Generator
• Loss of Lock and Error Reporting
• Configurable via SMBus
• 48-pin WQFN Package with Exposed DAP
TARGET APPLICATIONS
• Imaging: Industrial, Medical Security, Printers
• Displays: LED Walls, Commercial
• Video Transport
• Communication Systems
• Test and Measurement
• Industrial Bus
DESCRIPTION
The DS32EL0421/DS32ELX0421 is a 125 MHz to
312.5 MHz (DDR) serializer for high-speed serial
transmission over FR-4 printed circuit board
backplanes, balanced cables, and optical fiber. This
easy-to-use chipset integrates advanced signal and
clock conditioning functions, with an FPGA friendly
interface.
The DS32EL0421/DS32ELX0421 serializes up to 5
parallel input LVDS channels to create a maximum
data payload of 3.125 Gbps. If the integrated DC-
balance encoding is enabled, the maximum data
payload achievable is 2.5 Gbps.
The DS32EL0421/DS32ELX0421 serializers feature
remote sense capability to automatically detect and
negotiate link status with its companion
DS32EL0124/DS32ELX0124 deserializers without
requiring an additional feedback path.
The parallel LVDS interface reduces FPGA I/O pins,
board trace count and alleviates EMI issues, when
compared to traditional single-ended wide bus
interfaces.
The DS32EL0421/DS32ELX0421 is programmable
through a SMBus interface as well as through control
pins.
KEY SPECIFICATIONS
• 1.25 to 3.125 Gbps Serial Data Rate
• 125 to 312.5 MHz DDR Parallel Clock
• -40° to +85°C Temperature Range
• >8 kV ESD (HBM) Protection
• Low Intrinsic Jitter — 35ps at 3.125 Gbps
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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.
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