R
DC and Switching Characteristics
VOUTP
VOUTN
Differential
I/O Pair Pins
P
N
Internal
Logic
VOH
VOUTN
VOD
50%
VOUTP
VOL
VOCM
GND level
VOUTP + VOUTN
V
OCM = Output common mode voltage =
2
VOUTP - VOUTN
= Output voltage indicating a High logic level
= Output voltage indicating a Low logic level
V
OD = Output differential voltage =
VOH
VOL
DS312-3_03_021505
Figure 2: Differential Output Voltages
Table 10: DC Characteristics of User I/Os Using Differential Signal Standards
VOD
∆VOD
VOCM
∆VOCM
VOH
VOL
IOSTANDARD
Attribute
Min
(mV)
Typ
(mV)
Max
(mV)
Min
(mV)
Max
(mV)
Min
(V)
Min
(mV)
Max
(mV)
Min
(V)
Max
(V)
Typ (V) Max (V)
LVDS_25
250
250
300
100
350
450
450
600
400
-
-
-
-
-
-
1.125
-
-
1.375
-
-
-
-
-
-
-
1.25
-
1.25
-
BLVDS_25
MINI_LVDS_25
RSDS_25
350
1.20
-
-
50
-
1.0
1.1
-
-
1.4
1.4
50
-
1.15
1.15
1.25
1.35
Notes:
1. The numbers in this table are based on the conditions set forth in Table 4 and Table 9.
2. Output voltage measurements for all differential standards are made with a termination resistor (R ) of 100Ω across the N and P pins of the
T
differential signal pair.
3. At any given time, no more than two differential standards may be assigned to each bank.
DS312-3 (v1.0) March 1, 2005
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9
Advance Product Specification
XILINX [ XILINX, INC ]
