XC3S200A-4VQG100C Datasheet, PDF (19/132 Pages) Xilinx, Inc – Architectural and Configuration Overview

DC and Switching Characteristics
Differential Output Pairs
Internal
Logic
V_OUTP
P
N
V_OUTN
Differential
I/O Pair Pins
V_OUTN
V_OUTP
GND level
50%
V_OCM
V_OH
V_OD
V_OL
V_OUTP + V_OUTN
V_OCM = Output common mode voltage =
2
V_OD = Output differential voltage = ^V_OUTP ^{- V}_OUTN
V_OH = Output voltage indicating a High logic level
V_OL
=
Output
voltage
indicating
a
Low
logic
level
DS529-3_11_012907
Figure 5: Differential Output Voltages
Table 14: DC Characteristics of User I/Os Using Differential Signal Standards
IOSTANDARD Attribute Min (mV)
V_OD
Typ
(mV)
Max (mV)
Min (V)
V_OCM
Typ (V)
Max (V)
V_OH
Min (V)
V_OL
Max (V)
LVDS_25
247
350
454
1.125
–
1.375
–
–
LVDS_33
247
350
454
1.125
–
1.375
–
–
BLVDS_25
240
350
460
–
1.30
–
–
–
MINI_LVDS_25
MINI_LVDS_33
300
–
600
1.0
–
1.4
–
–
300
–
600
1.0
–
1.4
–
–
RSDS_25
100
–
400
1.0
–
1.4
–
–
RSDS_33
100
–
400
1.0
–
1.4
–
–
TMDS_33
PPDS_25
400
–
800
V_CCO – 0.405
–
V_CCO – 0.190
–
–
100
–
400
0.5
0.8
1.4
–
–
PPDS_33
100
–
400
0.5
0.8
1.4
–
–
DIFF_HSTL_I_18
DIFF_HSTL_II_18
DIFF_HSTL_III_18
DIFF_HSTL_I
DIFF_HSTL_III
DIFF_SSTL18_I
DIFF_SSTL18_II
DIFF_SSTL2_I
DIFF_SSTL2_II
DIFF_SSTL3_I
DIFF_SSTL3_II
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
V_CCO – 0.4
0.4
–
–
–
V_CCO – 0.4
0.4
–
–
–
V_CCO – 0.4
0.4
–
–
–
V_CCO – 0.4
0.4
–
–
–
V_CCO – 0.4
0.4
–
–
–
V_TT + 0.475 V_TT – 0.475
–
–
–
V_TT + 0.603 V_TT – 0.603
–
–
–
V_TT + 0.61 V_TT – 0.61
–
–
–
V_TT + 0.81 V_TT – 0.81
–
–
–
V_TT + 0.6
V_TT – 0.6
–
–
–
V_TT + 0.8
V_TT – 0.8
Notes:
1. The numbers in this table are based on the conditions set forth in Table 8 and Table 13.
2. See "External Termination Requirements for Differential I/O," page 20.
3. Output voltage measurements for all differential standards are made with a termination resistor (R_T) of 100Ω across the N and P pins of the
differential signal pair.
4. At any given time, no more than two of the following differential output standards can be assigned to an I/O bank: LVDS_25, RSDS_25,
MINI_LVDS_25, PPDS_25 when V_CCO=2.5V, or LVDS_33, RSDS_33, MINI_LVDS_33, TMDS_33, PPDS_33 when V_CCO = 3.3V
DS529-3 (v2.0) August 19, 2010
www.xilinx.com
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