Xilinx Virtex-5 RocketIO GTP

262 www.xilinx.com Virtex-5 RocketIO GTP Transceiver User Guide
UG196 (v1.3) May 25, 2007
Appendix A: MGT to GTP Transceiver Design Migration
R
Figure A-3: Virtex-II, Virtex-II Pro, Virtex-4, Virtex-5 GTP Power Supply Filtering
Virtex-II Pro Power Supply Filtering
AVCCAUXTX
AVCCAUXRX
VTTX
VTRX
AVCCAUXTX
AVCCAUXTX
AVCCAUXRXA
AVCCAUXRXB
AVCCAUXMGT
RTERM
MGTVREF
AVCCAUXRX
VTTX
VTRX
VTT
VTR
2.5V 2.5V
VTT
VTR
Device with
In-Package Capacitors
Device without
In-Package Capacitors
GNDA
GNDA
Virtex-4 Power Supply Filtering
1.2V
1.5V
2.5V
VTTXA
VTTXB
VTRXA
VTRXB
Notes:
Notes:
1. Nominal values. Refer to the device data sheets for values
and operating conditions.
1. Capacitors are 0402 0.22 µF.
2. Ferrite beads are MP21608S221A.
3. MGTVREF is 1.235V ± 1%.
4. There are multiple GNDAs per tile.
5. MGTVREF and RTERM are for the entire column.
6. RTERM equivalent resistor is 6.2 kW ± 1% and 20 ppm/C.
7. RTERM and MGTVREF resistors should have 0402 or 0603 package size.
1 kW
6.2 kW
0 kW
0 kW
2.5V
LM385
V
REF
= 1.235V
R5 =
(2.5V - V
REF
)/100 mA
1.5V Typical (0 - 2.5V)
Virtex-5 GTP Power Supply Filtering
MGTRREF
49.9W 1%
MGTVTTTX
1.2V
(1)
MGTAVCCPLL
MGTAVTTRX
1.2V
(1)
MGTAVCCA1
MGTAVCCA2
1.0V
(1)
1.2V
(1)
MGTAVTTTX1
MGTAVTTTX2
1.2V
(1)
MGTAVTTRXC
UG196_a_03_011507
Per Device
Per GTP_DUAL Tile