Flexibility; Board Guidelines; Power Supply Filtering - Xilinx Virtex-5 RocketIO GTP User Manual

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Flexibility

In Virtex-II Pro devices, changing of attributes requires partial reconfiguration. Virtex-4
and Virtex-5 devices allow all attribute changes from the DRP, and any default values can
be set in the HDL itself.

Board Guidelines

Power Supply Filtering

The Virtex-5 GTP transceivers simplify power supply design over previous generations in
two ways:
1.
2.
Table A-7
power supply filtering for all Virtex families.
Table A-7: Power Pin Voltages
Notes:
1. Nominal values. Refer to the device data sheets for values and operating conditions.
2. Depends on AC/DC coupling or termination options. See the device user guides for more details.
Virtex-5 RocketIO GTP Transceiver User Guide
UG196 (v1.3) May 25, 2007
Only two supply voltages are needed to power the transceivers.
Because the two transceivers that share a tile have common power pins, the number of
power supply filtering components is reduced.
shows the power pin voltages for all Virtex families, and
Pin Virtex-II Pro MGT
AVCCAUXRX
AVCCAUXTX
AVCCAUXMGT N/A
VTTX 1.8 - 2.5V
VTRX 1.5 - 2.5V
MGTAVCCPLL
MGTAVCC
MGTAVTTTX
MGTAVTTRX
MGTAVTTRXC
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Virtex-4 MGT
2.5V 1.2V
2.5V 1.2V
2.5V
1.5V
(2)
(2) 0.25 - 2.5V
- -
- -
- -
- -
- -
Primary Differences
Figure A-3 shows the
Virtex-5 GTP Transceiver
-
-
-
-
(2) -
1.2V
1.0V
1.2V
1.2V
1.2V
(1)
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