xc6vcx75t Xilinx Corp., xc6vcx75t Datasheet - Page 19

• Manufacturer Part Number: xc6vcx75t
• Description: Virtex-6 Cxt Family Data Sheet
• Manufacturer: Xilinx Corp.

GTX Transceiver DC Input and Output Levels
Table 25
FPGA GTX Transceivers User Guide for further details.
Table 25: GTX Transceiver DC Specifications
X-Ref Target - Figure 11
X-Ref Target - Figure 12
DS153 (v1.4) July 28, 2010
Advance Product Specification
Notes:
1.
2.
DV
V
V
DV
V
R
R
T
C
+V
OSKEW
IN
CMIN
CMOUTDC
IN
OUT
EXT
0
PPIN
PPOUT
Symbol
The output swing and preemphasis levels are programmable using the attributes discussed in Virtex-6 FPGA GTX Transceivers User Guide
and can result in values lower than reported in this table.
Other values can be used as appropriate to conform to specific protocols and standards.
+V
–V
0
summarizes the DC output specifications of the GTX transceivers in Virtex-6 CXT FPGAs. Consult the Virtex-6
N
P
Differential peak-to-peak input
voltage
Absolute input voltage
Common mode input voltage
Differential peak-to-peak output
voltage
DC common mode output voltage Equation based
Differential input resistance
Differential output resistance
Transmitter output pair (TXP and TXN) intra-pair skew
Recommended external AC coupling capacitor
P–N
(1)
DC Parameter
Figure 11: Single-Ended Peak-to-Peak Voltage
Figure 12: Differential Peak-to-Peak Voltage
External AC coupled
DC coupled
MGTAVTT = 1.2V
DC coupled
MGTAVTT = 1.2V
Transmitter output swing is set to
maximum setting
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Conditions
(2)
–400
Min
125
80
80
–
–
–
–
MGTAVTT – DV
2/3 MGTAVTT
Virtex-6 CXT Family Data Sheet
Typ
100
100
100
–
–
–
2
PPOUT
MGTAVTT
/4
Differential
2000
1000
Max
130
120
ds153_12_041410
Voltage
–
8
–
Single-Ended
Voltage
ds153_11_041410
Units
mV
mV
mV
mV
mV
nF
ps
Ω
Ω
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