DS99R421_15 Datasheet, PDF (1/26 Pages) Texas Instruments – 5-43 MHz FPD-Link LVDS (3 Data + 1 Clock) to FPD-Link II LVDS (Embedded Clock DC Balanced) Converter

DS99R421
www.ti.com
SNLS264D – JUNE 2007 – REVISED APRIL 2013
5-43 MHz FPD-Link LVDS (3 Data + 1 Clock) to FPD-Link II LVDS (Embedded Clock DC-
Balanced) Converter
Check for Samples: DS99R421
FEATURES
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•2 5 MHz–43 MHz Embedded Clock & DC-
Balanced Data Transmission (21 Total LVDS
Data Bits Plus 3 Low Speed LVCMOS Data
Bits)
• User Adjustable Pre-Emphasis Driving Ability
Through External Resistor on LVDS Outputs
and Capable to Drive up to 10 Meters Shielded
Twisted-Pair Cable
• Supports AC-Coupling Data Transmission
• 100Ω Integrated Termination Resistor at LVDS
Input
• Power-Down Control
• Available @SPEED BIST to DS90UR124 to
Validate Link Integrity
• All LVCMOS Inputs & Control Pins Have
Internal Pulldown
• Schmitt Trigger Inputs on OS[2:0] to Minimize
Metastable Conditions
• Outputs Tri-Stated Through DEN
• On-Chip Filters for PLLs
• Power Supply Range 3.3V ± 10%
• Automotive Temperature Range −40°C to
+105°C
• Greater Than 8kV ESD Tolerance
• Meets ISO 10605 ESD and AEC-Q100
Compliance
DESCRIPTION
The DS99R421 converts a FPD-Link input with 4
non-DC Balanced LVDS (3 LVDS Data + LVDS
Clock) plus 3 over-sampled low speed control bits
into a single LVDS DC-balanced serial stream with
embedded clock information. This single serial stream
simplifies transferring the 24-bit bus over a single
differential pair of PCB traces and cable by
eliminating the skew problems between the 3 parallel
LVDS data inputs and LVDS clock paths. It saves
system cost by narrowing 4 LVDS pairs to 1 LVDS
pair that in turn reduce PCB layers, cable width,
connector size, and pins.
The DS99R421 incorporates a single serialized LVDS
signal on the high-speed I/O. Embedded clock LVDS
provides a low power and low noise environment for
reliably transferring data over a serial transmission
path. By optimizing the converter output edge rate for
the operating frequency range EMI is further reduced.
In addition the device features pre-emphasis to boost
signals over longer distances using lossy cables.
Internal DC balanced encoding is used to support
AC-Coupled interconnects.
1
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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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