SERDESUR-43USB/NOPB National Semiconductor, SERDESUR-43USB/NOPB Datasheet - Page 6

• Manufacturer Part Number: SERDESUR-43USB/NOPB
• Description: BOARD EVAL DS90UR124,DS90UR241
• Manufacturer: National Semiconductor

Specifications of SERDESUR-43USB/NOPB

• Main Purpose: Interface, Serializer, Deserializer (SERDES)
• Utilized Ic / Part: DS90UR241, DS90UR124
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Other names: SERDESUR-43USB

How to set up the Evaluation Kit:
The PCB routing for the serializer input pins (DIN) have been laid out to accept
incoming LVCMOS signals from a 50-pin IDC connector. The TxOUT/RxIN (DOUT/RIN)
interface uses a USB connector/cable assembly (provided). The PCB routing for the Rx
output pins (ROUT) are accessed through a 50-pin IDC connector. Please follow these
steps to set up the evaluation kit for bench testing and performance measurements:
1) A two (2) meter USB connector
2) Jumpers and switches have been configured at the factory; they should not require
3) Power for the Tx and Rx boards must be supplied externally through Power Jack
Power Connection:
The serializer and de-serializer boards must be powered by supplying power externally
through J4 (VDD) and J5 (VSS) on serializer Board and J4 (VDD) and J5 (VSS) on de-
serializer board. Note +4V is the absolute MAXIMUM voltage (not operating voltage)
that should ever be applied to the SERDES serializer (DS90UR241) or de-serializer
(DS90UR124) VDD terminal.
maximum is exceeded.
Connect 4-pin USB A
the other side 5-pin mini USB jack
completes the LVDS interface connection.
NOTE: The DS90C241 and DS90C124 are NOT USB compliant and should not
be plugged into a USB device nor should a USB device be plugged into the
demo boards.
any changes for immediate operation of the chipset.
settings for more details. From the Video Decoder board, connect a flat cable (not
supplied) to the Serializer board and connect another flat cable (not supplied) from
the De-serializer board to the panel. Caution: The LVCMOS input levels should be
within the specified range for optimal performance, not to exceed the absolute
maximum rating of -0.3V to (VCC +0.3V).
(VDD). Grounds for both boards are connected through Power Jack (VSS) (see
section below).
Note: For 50 ohm LVCMOS input signal sources, add 50 ohm parallel termination
resistors R1-R25 on the DS90UR241 Serializer board and provide appropriate 3.3V
LVCMOS input signal levels into DIN[23:0] and TCLK.
SERDES Evaluation Kit DS90UR241/124 USB Version 0.1 User Manual
1
2
National Semiconductor Corporation
3
4
Damage to the device(s) can result if the voltage
A
/
cable assembly has been included in the kit.
side of cable harness to the serializer board and
1 2 3
4
MIN
to the de-serializer board. This
See text on Configuration
Date: 5/8/2008
Page 6 of 36