DS705 XILINX [Xilinx, Inc], DS705 Datasheet - Page 13

• Manufacturer Part Number: DS705
• Description: XA Spartan-3A DSP Automotive FPGA Family Data Sheet
• Manufacturer: XILINX [Xilinx, Inc]

Differential I/O Standards
X-Ref Target - Figure 3
Table 13: Recommended Operating Conditions for User I/Os Using Differential Signal Standards
DS705 (v1.1) January 20, 2009
Product Specification
LVDS_25
LVDS_33
BLVDS_25
MINI_LVDS_25
MINI_LVDS_33
LVPECL_25
LVPECL_33
RSDS_25
RSDS_33
TMDS_33
PPDS_25
PPDS_33
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
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
9.
IOSTANDARD Attribute
The V
V
These true differential output standards are supported only on FPGA banks 0 and 2. Inputs are unrestricted. See the chapter “Using I/O Resources” in UG331.
See
LVPECL is supported on inputs only, not outputs. Requires V
LVPECL_33 maximum V
Requires V
These higher-drive output standards are supported only on FPGA banks 1 and 3. Inputs are unrestricted. See the chapter “Using I/O Resources” in UG331.
V
standards do not use V
ICM
REF
"External Termination Requirements for Differential I/O."
must be less than V
(3)
(3)
inputs are used for the DIFF_SSTL and DIFF_HSTL standards. The V
CCO
(3)
(3)
(3)
(3)
(3,4,7)
(4)
(5)
(5)
rails supply only differential output drivers, not input circuits.
R
CCAUX
(3)
(3)
(8)
(8)
(8)
= 3.3V ± 10%. (V
REF
ICM
CCAUX
.
= V
.
CCAUX
Min (V)
2.25
2.25
2.25
2.25
3.14
2.25
CCAUX
3.0
3.0
3.0
3.0
1.7
1.7
1.7
1.4
1.4
1.7
1.7
2.3
2.3
3.0
3.0
Internal
– (V
GND level
V
Logic
- 300 mV) ≤ V
CCO
ID
/2).
V
V
Inputs Only
Inputs Only
INN
INP
Nom (V)
for Drivers
2.5
3.3
2.5
2.5
3.3
2.5
3.3
3.3
2.5
3.3
1.8
1.8
1.8
1.5
1.5
1.8
1.8
2.5
2.5
3.3
3.3
Figure 3: Differential Input Voltages
V
ICM
ICM
V
ID
≤ (V
= Input common mode voltage =
CCAUX
= Differential input voltage = V
50%
(1)
Max (V)
CCAUX
2.75
2.75
2.75
2.75
3.47
2.75
3.6
3.6
3.6
3.6
1.9
1.9
1.9
1.6
1.6
1.9
1.9
2.7
2.7
3.6
3.6
= 3.3V ± 10%.
V
- 37 mV).
www.xilinx.com
ICM
REF
Min (mV) Nom (mV) Max (mV)
settings are the same as for the single-ended versions in
XA Spartan-3A DSP Automotive FPGA Family Data Sheet
100
100
100
200
200
100
100
100
100
150
100
100
100
100
100
100
100
100
100
100
100
100
100
V
V
V
ID
INP
INN
INP
350
350
300
800
800
200
200
V
V
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
ID
INP
- V
N
P
INN
2
+ V
INN
DS705_04_061908
Differential
I/O Pair Pins
1000
1000
1200
600
600
600
600
400
400
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Min (V)
0.68
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
0.3
2.7
0.2
0.2
0.8
0.8
0.8
0.7
0.7
1.0
1.0
1.1
1.1
–
Table
Nom (V)
V
ICM
1.25
1.25
11. Other differential
1.3
1.2
1.2
1.2
1.2
1.2
1.2
0.9
–
–
–
–
–
–
–
–
–
–
–
–
–
(2)
Max (V)
2.8
2.35
2.35
2.35
1.95
1.95
1.95
3.23
1.5
1.5
2.3
2.3
1.1
1.1
1.1
0.9
1.1
1.1
1.5
1.5
1.9
1.9
–
(6)
13