DS893 Datasheet, PDF (56/77 Pages) Xilinx, Inc – DC and AC Switching Characteristics

Virtex UltraScale FPGAs Data Sheet: DC and AC Switching Characteristics
GTY Transceiver Specifications
GTY Transceiver DC Input and Output Levels
Table 64 summarizes the DC specifications of the GTY transceivers in Virtex UltraScale FPGAs. Consult
www.xilinx.com/products/technology/high-speed-serial for further details.
Table 64: GTY Transceiver DC Specifications
Symbol
DC Parameter
Conditions
Min
Typ
Max Units
DV_PPIN
V_IN
Differential peak-to-peak input
voltage (external AC coupled)
Single-ended input voltage.
Voltage measured at the pin
referenced to GND.
>10.3125 Gb/s
6.6 Gb/s to 10.3125 Gb/s
≤ 6.6 Gb/s
DC coupled
V_MGTAVTT = 1.2V
150
150
150
–400
–
1250
mV
–
1250
mV
–
2000
mV
–
V_MGTAVTT mV
V_CMIN
Common mode input voltage
DC coupled
V_MGTAVTT = 1.2V
–
2/3 V_MGTAVTT
–
mV
D_VPPOUT
Differential peak-to-peak output Transmitter output swing
voltage⁽¹⁾
is set to 0x1F
800
–
–
mV
When remote RX is
terminated to GND
V_MGTAVTT/2 – D_VPPOUT/4
mV
V_CMOUTDC
Common mode output voltage:
DC coupled (equation based)
When remote RX
termination is floating
V_MGTAVTT – D_VPPOUT/2
mV
V_CMOUTAC
Common mode output voltage:
AC coupled
When remote RX is
terminated to V_{RX_TERM(2)}
VMGTA
V
T
T
–
D----V---P---P-4--O----U----T-
–


V----M----G----T---A---V---T---T---2-–_{---V----R---X---_---T--E---R---M--}
Equation based
V_MGTAVTT – D_VPPOUT/2
mV
mV
R_IN
R_OUT
T_OSKEW
C_EXT
Differential input resistance
Differential output resistance
Transmitter output pair (TXP and TXN) intra-pair skew
Recommended external AC coupling capacitor⁽³⁾
–
100
–
Ω
–
100
–
Ω
–
–
5
ps
–
100
–
nF
Notes:
1. The output swing and pre-emphasis levels are programmable using the GTY transceiver attributes and can result in values
lower than reported in this table.
2. V_{RX_TERM} is the remote RX termination voltage.
3. Other values can be used as appropriate to conform to specific protocols and standards.
X-Ref Target - Figure 6
+V
P
N
0
Figure 6: Single-Ended Peak-to-Peak Voltage
Single-Ended
Peak-to-Peak
Voltage
ds893_03_120314
DS893 (v1.7.1) April 4, 2016
Product Specification
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