XC3S5000-5FGG676C Datasheet, PDF (66/272 Pages) Xilinx, Inc – Introduction and Ordering Information

X-Ref Target - Figure 32
Internal
Logic
Spartan-3 FPGA Family: DC and Switching Characteristics
V_INP
P ^Differential
N ^{I/O Pair Pins}
V_INN
V_INN
V_INP
50%
V_ID
V_ICM
GND level
V_ICM
=
Input
common
mode
voltage
=
V_INP
+
2
V_INN
V_ID = Differential input voltage = V_INP - V_INN
DS099-3_01_012304
Figure 32: Differential Input Voltages
Table 37: Recommended Operating Conditions for User I/Os Using Differential Signal Standards
Signal Standard
(IOSTANDARD)
V_CCO⁽¹⁾
V_ID⁽³⁾
V_ICM
Min (V) Nom (V) Max (V) Min (mV) Nom (mV) Max (mV) Min (V) Nom (V)
LDT_25 (ULVDS_25)
2.375
2.50
2.625
200
600
1000
0.44
0.60
LVDS_25, LVDS_25_DCI
2.375
2.50
2.625
100
350
600
0.30
1.25
BLVDS_25
2.375
2.50
2.625
-
350
-
-
1.25
LVDSEXT_25,
LVDSEXT_25_DCI
2.375
2.50
2.625
100
540
1000
0.30
1.20
LVPECL_25
2.375
2.50
2.625
100
-
-
0.30
1.20
RSDS_25
2.375
2.50
2.625
100
200
-
-
1.20
DIFF_HSTL_II_18,
1.70
1.80
1.90
200
-
DIFF_HSTL_II_18_DCI
-
0.80
-
DIFF_SSTL2_II,
2.375
2.50
2.625
300
-
DIFF_SSTL2_II_DCI
-
1.05
-
Max (V)
0.78
2.20
-
2.20
2.00
-
1.00
1.45
Notes:
1. V_CCO only supplies differential output drivers, not input circuits.
2. V_REF inputs are not used for any of the differential I/O standards.
3. V_ID is a differential measurement.
DS099 (v3.1) June 27, 2013
www.xilinx.com
Product Specification
66