Virtex-6 FPGA Data Sheet: DC and Switching Characteristics
Table 16: GTX Transceiver Quiescent Supply Current (per Lane) (1)(2)(3)
Symbol
I MGTAVTTQ
I MGTAVCCQ
Description
Quiescent MGTAVTT supply current for one GTX transceiver
Quiescent MGTAVCC supply current for one GTX transceiver
Typ (4)
0.9
3.5
Max
Note 2
Units
mA
mA
Notes:
1.
2.
3.
4.
Device powered and unconfigured.
Currents for conditions other than values specified in this table can be obtained by using the XPE or XPA tools.
GTX transceiver quiescent supply current for an entire device can be calculated by multiplying the values in this table by the number of
available GTX transceivers.
Typical values are specified at nominal voltage, 25°C.
GTX Transceiver DC Input and Output Levels
Table 17 summarizes the DC output specifications of the GTX transceivers in Virtex-6 FPGAs. Consult UG366 : Virtex-6
FPGA GTX Transceivers User Guide for further details.
Table 17: GTX Transceiver DC Specifications
Symbol
DV PPIN
V IN
V CMIN
DC Parameter
Differential peak-to-peak input
voltage
Absolute input voltage
Common mode input voltage
Conditions
External AC coupled ≤ 4.25 Gb/s
External AC coupled > 4.25 Gb/s
DC coupled
MGTAVTT = 1.2V
DC coupled
MGTAVTT = 1.2V
Min
125
175
–400
Typ
2/3 MGTAVTT
Max
2000
2000
MGTAVTT
Units
mV
mV
mV
mV
DV PPOUT
Differential peak-to-peak output Transmitter output swing is set to
voltage (1) maximum setting
1000
mV
V CMOUTDC
DC common mode output
voltage.
Equation based
MGTAVTT – DV PPOUT /4
mV
R IN
R OUT
T OSKEW
Differential input resistance
Differential output resistance
Transmitter output pair (TXP and TXN) intra-pair skew
80
80
100
100
2
130
120
8
Ω
Ω
ps
C EXT
Recommended external AC coupling
capacitor (2)
100
nF
Notes:
1.
2.
The output swing and preemphasis levels are programmable using the attributes discussed in UG366 : 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.
X-Ref Target - Figure 1
+V
P
S ingle-Ended
N
0
DS152 (v3.6) March 18, 2014
Product Specification
Figure 1: Single-Ended Peak-to-Peak Voltage
Volt a ge
d s 152_01_121509
12
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