BLVDS04/NOPB National Semiconductor, BLVDS04/NOPB Datasheet

no-image

BLVDS04/NOPB

Manufacturer Part Number
BLVDS04/NOPB
Description
BOARD EVAL DS92LV1023/1224
Manufacturer
National Semiconductor
Datasheet

Specifications of BLVDS04/NOPB

Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
*BLVDS04
*BLVDS04/NOPB
BLVDS04
Using the BLVDS04 Demo Kit
The BLVDS04 Demo Kit was designed to allow the user to observe the operation of the DS92LV1023
Serializer and the DS92LV1224 Deserializer. Several configurations are possible. With the purchase of
additional kits, multi-drop applications can be modeled.
The kit consists of a backplane card with 4 differential busses, 2 DUT cards; one configured as a serializer
and one configured as a deserializer, and 4 adapter cards which can be used to adapt the pin header I/O of
the DUT cards to SMB or SMA connectors.
The Backplane card
Each side of the backplane card has two differential busses, a REFCLK bus to distribute the REFCLK
signal to deserializer cards, and a SYNC/LOCK bus that connects the LOCK* output from deserializers to
the SYNC1 input of the serializer.
Each differential bus is designed for a target unloaded impedance of 130 ohms. Since addition of DUT
cards and load capacitors will lower this impedance, the busses are terminated in 100 ohms at each end.
Each differential bus has 5 ‘slots’ which use 20 pin dip headers to insert DUT cards. Between each of the
slots are provisions for adding capacitors to simulate extra loading on the bus. As the bus configuration is
changed by adding additional DUT cards or by adding load caps on the bus, the termination resistors
should be changed to match the loaded impedance of the bus.
REFCLK
Vcc
Typical Configuration
U8
Tx
Side B
BERT
Tx
Rx
Side B
BERT
Rx

Related parts for BLVDS04/NOPB

BLVDS04/NOPB Summary of contents

Page 1

Using the BLVDS04 Demo Kit The BLVDS04 Demo Kit was designed to allow the user to observe the operation of the DS92LV1023 Serializer and the DS92LV1224 Deserializer. Several configurations are possible. With the purchase of additional kits, multi-drop applications can ...

Page 2

The DUT card The DUT card can be configured as a serializer card or a deserializer card. The kit comes with 1 card configured as a serializer and 1 card configured as a deserializer. Serializer Configuration To configure a card ...

Page 3

SMB connector labeled U1. In the BUS REFCLK position (pins 2-3 connected), the REFCLK signal is supplied from the bus REFCLK channel. J4 – J4 should be set in the LOCK position; pins 2-3 connected. This jumper will ...

Page 4

Bus Connections Whether a DUT card is configured as a serializer or a deserializer the BLVDS I/O pins can be connected to any of the 4 busses on the backplane card. The default bus is BUS2 on side A of ...

Page 5

On the DUT card, side A, solder a jumper from the R17 pad to the inside pad of C32 the DUT card, side A, cut the traces from J11 and J12 to the Bus1B connectors ...

Page 6

... GND GND GND 11 CLK 12 GND 13 REN/DEN* 14 GND GND GND GND Revised by: James Chang Applications Engineer National Semiconductor Corp. Connector P4, P5, P6, P7, P8 Pin Pin 1 Vcc 2 Vcc 3 REFCLK A 4 SYNC/LOCK B 5 GND 6 GND 7 Bus A1+ 8 Bus Bus Bus Bus Bus Bus Bus GND ...

Related keywords