XC3S400-4FT256C Xilinx Inc, XC3S400-4FT256C Datasheet - Page 65

• Manufacturer Part Number: XC3S400-4FT256C
• Description: SEMI CONDUCTOR
• Manufacturer: Xilinx Inc

Specifications of XC3S400-4FT256C

• Case: BGA
• Dc: 04+

Table 37: DC Characteristics of User I/Os Using Differential Signal Standards
DS099-3 (v2.2) May 25, 2007
Product Specification
98
Notes:
1.
2.
3.
4.
5.
6.
LDT_25 (ULVDS_25)
LVDS_25
BLVDS_25
LVDSEXT_25
LVPECL_25
RSDS_25
DIFF_HSTL_II_18
DIFF_SSTL2_II
Signal Standard
The mask revision code appears on the device top marking. See
output ranges but can be used in any design created using a previous revision.
The numbers in this table are based on the conditions set forth in
This value must be compatible with the receiver to which the FPGA’s output pair is connected.
Output voltage measurements for all differential standards are made with a termination resistor (R
of the differential signal pair.
Only one of the differential standards RSDS_25, LDT_25, LVDS_25, and LVDSEXT_25 may be used for outputs within a bank.
Each LVPECL_25 or BLVDS_25 output-pair requires three external resistors for proper output operation as shown in
Each LVPECL_25 or BLVDS_25 input-pair uses a 100Ω termination resistor at the receiver.
(5)
(6)
(6)
R
LVPECL
Figure 32: External Termination Required for LVPECL and BLVDS Output and Input
70Ω
70Ω
Revision
Mask
All
All
‘E’
All
All
‘E’
All
All
‘E’
All
All
Internal
GND level
Logic
240Ω
(1)
V
V
OUTN
OUTP
Z
Z
0
0
=50Ω
Min (mV) Typ (mV)
=50Ω
430
100
200
250
100
300
100
200
V
-
-
-
OCM
V
V
V
(3)
Figure 31: Differential Output Voltages
OD
OH
OL
50%
= Output common mode voltage =
= Output differential voltage =
= Output voltage indicating a Low logic level
= Output voltage indicating a High logic level
100Ω
600
350
V
-
-
-
-
-
-
-
-
-
OD
V
LVPECL
OCM
www.xilinx.com
Max (mV)
Spartan-3 FPGA Family: DC and Switching Characteristics
670
600
500
450
600
700
600
500
-
-
-
V
Package Marking, page
V
Table 31
OUTP
V
BLVDS
OD
OUTN
Min (V)
0.495
V
0.80
0.80
0.80
1.0
1.0
1.0
V
OUTP
and
-
-
-
-
OH
165Ω
165Ω
N
P
V
OUTP
Table
- V
OUTN
Differential
I/O Pair Pins
Typ (V)
V
2
+ V
0.600
1.20
OCM
140Ω
36.
V
-
-
-
-
-
-
-
-
-
OUTN
OL
DS099-3_02_012304
Z
Z
7. Mask revision ‘E’ devices have tighter
0
0
=50Ω
=50Ω
Max (V)
0.715
1.6
1.5
1.5
1.6
1.5
1.6
T
-
-
-
-
) of 100Ω across the N and P pins
100Ω
V
V
CCO
Min (V)
TT
ds099-3_08_112105
0.71
0.85
1.10
0.85
1.15
1.35
0.85
1.10
V
BLVDS
+ 0.80
OH
-
– 0.40
Figure
V
Max (V)
TT
1.005
0.50
1.55
1.40
1.55
1.35
1.55
1.40
0.40
V
– 0.80
OL
-
32.
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