Use of Optional Rosenberger HSD Connector with STP Cable
17
SNLU135B – June 2013 – Revised April 2016
Copyright © 2013–2016, Texas Instruments Incorporated
Additional Features
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Refer Schematic and BOM section for specification.
4.3
Use of Optional Rosenberger HSD Connector with STP Cable
Following changes are required for using an STP cable with the EVM,
1. On Serializer board, depopulate C16 and C19 capacitors and populate the C17 and C18, 0.1 µF. Also,
populate P1 (Rosenberger HSD connector).
2. On Deserializer board, depopulate C6 and C7 capacitors and populate the C4 and C5, 0.1 µF. Also,
populate P1 (Rosenberger HSD connector).
3. Set the pin 5 of switch S1 LOW on DES board, to accept input from RIN0+/-.
This configuration will require Serializer and Deserializer both to be powered separately. To enable power
over STP there are two options available as shown in
and
:
1. To transmit power over the pair carrying data, mount R30 (0
Ω
), R31 (0
Ω
), L3 on SER board and R36
(0
Ω
), R37 (0
Ω
), L1 on DES board.
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2. To transmit power over unused pair of STP cable,
On SER board,
•
Mount L6 (10 µH), L7 (10 µH)
•
Put jumpers across pin 1 and pin 2 of jumpers JP2
•
Put jumpers across pin 2 and pin 3 of jumpers JP3
On DES board,
•
Mount L5 (2.7 µH), L6 (2.7 µH)
•
Put jumpers on JP3 and JP4 to match the polarity of supply (check on pin2 of each header)