
Virtex-E 1.8 V Field Programmable Gate Arrays
R
DS022-2 (v3.0) March 21, 2014
Module 2 of 4
Production Product Specification
45
— OBSOLETE — OBSOLETE — OBSOLETE — OBSOLETE —
LVTTL
LVTTL requires no termination. DC voltage specifications
LVCMOS2
LVCMOS2 requires no termination. DC voltage specifica-
LVCMOS18
LVCMOS18 does not require termination.
Table 36 lists DC
voltage specifications.
AGP-2X
The specification for the AGP-2X standard does not docu-
ment a recommended termination technique. DC voltage
Table 34: LVTTL Voltage Specifications
Parameter
Min
Typ
Max
VCCO
3.0
3.3
3.6
VREF
--
-
VTT
--
-
VIH
2.0
-
3.6
VIL
0.5
-
0.8
VOH
2.4
-
VOL
--
0.4
IOH at VOH (mA)
24
-
IOLat VOL (mA)
24
-
Notes:
1.
Note: VOLand VOH for lower drive currents sample tested.
Table 35: LVCMOS2 Voltage Specifications
Parameter
Min
Typ
Max
VCCO
2.3
2.5
2.7
VREF
--
-
VTT
--
-
VIH
1.7
-
3.6
VIL
0.5
-
0.7
VOH
1.9
-
VOL
--
0.4
IOH at VOH (mA)
12
-
IOLat VOL (mA)
12
-
Table 36: LVCMOS18 Voltage Specifications
Parameter
Min
Typ
Max
VCCO
1.70
1.80
1.90
VREF
--
-
VTT
--
-
VIH
0.65 x VCCO
-1.95
VIL
– 0.5
-
0.2 x VCCO
VOH
VCCO – 0.4
-
VOL
--
0.4
IOH at VOH (mA)
–8
-
IOLat VOL (mA)
8
-
Table 37: AGP-2X Voltage Specifications
Parameter
Min
Typ
Max
VCCO
3.0
3.3
3.6
VREF = N × VCCO(1)
1.17
1.32
1.48
VTT
--
-
VIH = VREF + 0.2
1.37
1.52
-
VIL = VREF – 0.2
-
1.12
1.28
VOH = 0.9 × VCCO
2.7
3.0
-
VOL = 0.1 × VCCO
-
0.33
0.36
IOH at VOH (mA)
Note 2
-
IOLat VOL (mA)
Note 2
-
Notes:
1.
N must be greater than or equal to 0.39 and less than or
equal to 0.41.
2.
Tested according to the relevant specification.