XC3S100E Datasheet, PDF (111/193 Pages) Xilinx, Inc – DC and Switching Characteristics

DC and Switching Characteristics
Internal
Logic
R
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 1: Differential Input Voltages
Table 9: Recommended Operating Conditions for User I/Os Using Differential Signal Standards
V_CCO for Drivers⁽¹⁾
V_ID
V_ICM
V_IH
IOSTANDARD
Attribute
Min Nom Max Min Nom Max Min Nom Max Min Max
(V) (V) (V) (mV) (mV) (mV) (V) (V) (V) (V) (V)
LVDS_25
2.375 2.50 2.625 100 350 600 0.30 1.25 2.20
-
-
BLVDS_25
2.375 2.50 2.625 100 350 600 0.30 1.25 2.20
-
-
MINI_LVDS_25
2.375 2.50 2.625 200
-
600 0.30
-
2.2
LVPECL_25⁽²⁾
Inputs Only
100 800 1000 0.3 1.2 2.2 0.8 2.0
RSDS_25
2.375 2.50 2.625 100 200
-
0.3 1.20 1.4
-
-
Notes:
1. The V_CCO rails supply only differential output drivers, not input circuits.
2. Spartan-3E devices support this standard for inputs only, not for outputs.
3. V_REF inputs are not used for any of the differential I/O standards.
V_IL
Min Max
(V) (V)
-
-
-
-
0.5 1.7
-
-
8
www.xilinx.com
DS312-3 (v1.0) March 1, 2005
Advance Product Specification