DS92LV0412SQX/NOPB National Semiconductor, DS92LV0412SQX/NOPB Datasheet - Page 36

• Manufacturer Part Number: DS92LV0412SQX/NOPB
• Description: IC SER/DESER 5-50MHZ 24B 48LLP
• Manufacturer: National Semiconductor

Specifications of DS92LV0412SQX/NOPB

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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POWER UP REQUIREMENTS AND PDB PIN
The VDD (V
1.5 ms with a monotonic rise. If slower then 1.5 ms then a
capacitor on the PDB pin is needed to ensure PDB arrives
after all the VDD have settled to the recommended operating
voltage. When PDB pin is pulled to V
to use a 10 kΩ pull-up and a 22 uF cap to GND to delay the
PDB input signal.
TRANSMISSION MEDIA
The DS92LV0411 / DS92LV0412 and their companion dese-
rializer/serializer chipset is intended to be used in a point-to-
point configuration, through a PCB trace, twisted pair or
coaxial cables. The DS92LV0411 requires external parallel
LVDS termination, but provides internal serial lane termina-
tions to provide a clean signaling environment. The intercon-
nect for LVDS should present a differential impedance of 100
Ohms. The interconnect for the Channel Link II interface
should present a differential impedance of 100 Ohms or when
configured for coaxial cables the interconnect should present
an impedance of 50 Ohms. Use cables and connectors that
DDn
and V
DDIO
) supply ramp should be faster than
DDIO
, it is recommended
36
have matched impedance to minimize impedance disconti-
nuities. Shielded or un-shielded cables may be used depend-
ing upon the noise environment and application require-
ments.
LIVE LINK INSERTION
The serializer and deserializer devices support live link or ca-
ble hot plug applications. The automatic receiver lock to ran-
dom data “plug & go” hot insertion capability allows the
DS92LV0412 to attain lock to the active data stream during a
live cable insertion event.
ALTERNATE COLOR / DATA MAPPING
Color Mapped data Pin names are provided to specify a rec-
ommended mapping for 24-bit and 18-bit Applications. When
connecting to earlier generations of Channel Link II deserial-
izer devices, a color mapping review is recommended to
ensure the correct connectivity is obtained.
examples for interfacing between DS92LV0411 and different
deserializers.
Table
14provides