XILINX XA3S250E

37
XA Spartan-3E Automotive
FPGA Family Data Sheet
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DS635 (v2.0) September 9, 2009
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Product Specification
Summary
The Xilinx® Automotive (XA) Spartan®-3E family of FPGAs
is specifically designed to meet the needs of high-volume,
cost-sensitive automotive electronics applications. The
five-member family offers densities ranging from 100,000 to
1.6 million system gates, as shown in Table 1.
•
Introduction
XA devices are available in both extended-temperature
Q-Grade (–40°C to +125°C TJ) and I-Grade (–40°C to
+100°C TJ) and are qualified to the industry recognized
AEC-Q100 standard.
The XA Spartan-3E family builds on the success of the earlier XA Spartan-3 family by increasing the amount of logic
per I/O, significantly reducing the cost per logic cell. New
features improve system performance and reduce the cost
of configuration. These XA Spartan-3E FPGA enhancements, combined with advanced 90 nm process technology,
deliver more functionality and bandwidth per dollar than was
previously possible, setting new standards in the programmable logic industry.
Because of their exceptionally low cost, XA Spartan-3E
FPGAs are ideally suited to a wide range of automotive
applications, including infotainment, driver information, and
driver assistance modules.
The XA Spartan-3E family is a superior alternative to mask
programmed ASICs and ASSPs. FPGAs avoid the high initial mask set costs and lengthy development cycles, while
also permitting design upgrades in the field with no hardware replacement necessary because of its inherent programmability, an impossibility with conventional ASICs and
ASSPs with their inflexible hardware architecture.
Features
•
•
•
Very low-cost, high-performance logic solution for
high-volume automotive applications
Proven advanced 90-nanometer process technology
Multi-voltage, multi-standard SelectIO™ interface pins
- Up to 376 I/O pins or 156 differential signal pairs
- LVCMOS, LVTTL, HSTL, and SSTL single-ended
signal standards
- 3.3V, 2.5V, 1.8V, 1.5V, and 1.2V signaling
- 622+ Mb/s data transfer rate per I/O
- True LVDS, RSDS, mini-LVDS, differential
HSTL/SSTL differential I/O
•
•
•
•
•
•
•
•
- Enhanced Double Data Rate (DDR) support
- DDR SDRAM support up to 266 Mb/s
Abundant, flexible logic resources
- Densities up to 33,192 logic cells, including
optional shift register or distributed RAM support
- Efficient wide multiplexers, wide logic
- Fast look-ahead carry logic
- Enhanced 18 x 18 multipliers with optional pipeline
- IEEE 1149.1/1532 JTAG programming/debug port
Hierarchical SelectRAM™ memory architecture
- Up to 648 Kbits of fast block RAM
- Up to 231 Kbits of efficient distributed RAM
Up to eight Digital Clock Managers (DCMs)
- Clock skew elimination (delay locked loop)
- Frequency synthesis, multiplication, division
- High-resolution phase shifting
- Wide frequency range (5 MHz to over 300 MHz)
Eight global clocks plus eight additional clocks per
each half of device, plus abundant low-skew routing
Configuration interface to industry-standard PROMs
- Low-cost, space-saving SPI serial Flash PROM
- x8 or x8/x16 parallel NOR Flash PROM
Complete Xilinx ISE® and WebPACK™ software
support
MicroBlaze™ and PicoBlaze™ embedded processor
cores
Fully compliant 32-/64-bit 33 MHz PCI™ technology
support
Low-cost QFP and BGA packaging options
- Common footprints support easy density migration
Refer to Spartan-3E FPGA Family: Complete Data Sheet
(DS312) for a full product description, AC and DC specifications, and package pinout descriptions. Any values shown
specifically in this XA Spartan-3E Automotive FPGA Family
data sheet override those shown in DS312.
For information regarding reliability qualification, refer to
RPT081 (Xilinx Spartan-3E Family Automotive Qualification
Report) and RPT012 (Spartan-3/3E UMC-12A 90 nm Qualification Report).
© 2007–2009 Xilinx, Inc. XILINX, the Xilinx logo, Virtex, Spartan, ISE, and other designated brands included herein are trademarks of Xilinx in the United States and other
countries. PCI, PCIe, and PCI Express are trademarks of PCI-SIG and used under license. All other trademarks are the property of their respective owners.
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Product Specification
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Key Feature Differences from Commercial XC Devices
•
•
•
•
•
AEC-Q100 device qualification and full production part
approval process (PPAP) documentation support
available in both extended temperature I- and
Q-Grades
Guaranteed to meet full electrical specification over the
TJ = –40°C to +125°C temperature range (Q-Grade)
XA Spartan-3E devices are available in the -4 speed
grade only.
PCI-66 is not supported in the XA Spartan-3E FPGA
product line.
The readback feature is not supported in the XA
•
•
•
•
•
•
Spartan-3E FPGA product line.
XA Spartan-3E devices are available in Step 1 only.
JTAG configuration frequency reduced from 30 MHz to
25 MHz.
Platform Flash is not supported within the XA family.
XA Spartan-3E devices are available in Pb-free
packaging only.
MultiBoot is not supported in XA versions of this
product.
The XA Spartan-3E device must be power cycled prior
to reconfiguration.
Table 1: Summary of XA Spartan-3E FPGA Attributes
Device
CLB Array
(One CLB = Four Slices)
Equivalent
Total
Total
Logic
System
Rows Columns CLBs
Slices
Cells
Gates
Distributed
RAM bits(1)
Block
RAM
bits(1)
Dedicated
Multipliers DCMs
Maximum
Maximum Differential
I/O Pairs
User I/O
XA3S100E
100K
2,160
22
16
240
960
15K
72K
4
2
108
40
XA3S250E
250K
5,508
34
26
612
2,448
38K
216K
12
4
172
68
XA3S500E
500K
10,476
46
34
1,164
4,656
73K
360K
20
4
190
77
XA3S1200E
1200K
19,512
60
46
2,168
8,672
136K
504K
28
8
304
124
XA3S1600E
1600K
33,192
76
58
3,688
14,752
231K
648K
36
8
376
156
Notes:
1.
By convention, one Kb is equivalent to 1,024 bits.
Architectural Overview
The XA Spartan-3E family architecture consists of five fundamental programmable functional elements:
•
•
•
•
Configurable Logic Blocks (CLBs) contain flexible
Look-Up Tables (LUTs) that implement logic plus
storage elements used as flip-flops or latches. CLBs
perform a wide variety of logical functions as well as
store data.
Input/Output Blocks (IOBs) control the flow of data
between the I/O pins and the internal logic of the
device. Each IOB supports bidirectional data flow plus
3-state operation. Supports a variety of signal
standards, including four high-performance differential
standards. Double Data-Rate (DDR) registers are
included.
Block RAM provides data storage in the form of
18-Kbit dual-port blocks.
Multiplier Blocks accept two 18-bit binary numbers as
inputs and calculate the product.
DS635 (v2.0) September 9, 2009
Product Specification
•
Digital Clock Manager (DCM) Blocks provide
self-calibrating, fully digital solutions for distributing,
delaying, multiplying, dividing, and phase-shifting clock
signals.
These elements are organized as shown in Figure 1. A ring
of IOBs surrounds a regular array of CLBs. Each device has
two columns of block RAM except for the XA3S100E, which
has one column. Each RAM column consists of several
18-Kbit RAM blocks. Each block RAM is associated with a
dedicated multiplier. The DCMs are positioned in the center
with two at the top and two at the bottom of the device. The
XA3S100E has only one DCM at the top and bottom, while
the XA3S1200E and XA3S1600E add two DCMs in the middle of the left and right sides.
The XA Spartan-3E family features a rich network of traces
that interconnect all five functional elements, transmitting
signals among them. Each functional element has an associated switch matrix that permits multiple connections to the
routing.
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Notes:
1.
The XA3S1200E and XA3S1600E have two additional DCMs on both the left and right sides as
indicated by the dashed lines. The XA3S100E has only one DCM at the top and one at the bottom.
Figure 1: XA Spartan-3E Family Architecture
Configuration
I/O Capabilities
XA Spartan-3E FPGAs are programmed by loading configuration data into robust, reprogrammable, static CMOS configuration latches (CCLs) that collectively control all
functional elements and routing resources. The FPGA’s
configuration data is stored externally in a PROM or some
other non-volatile medium, either on or off the board. After
applying power, the configuration data is written to the
FPGA using any of five different modes:
The XA Spartan-3E FPGA SelectIO interface supports
many popular single-ended and differential standards.
Table 2 shows the number of user I/Os as well as the number of differential I/O pairs available for each device/package combination.
•
•
•
•
•
Serial Peripheral Interface (SPI) from an
industry-standard SPI serial Flash
Byte Peripheral Interface (BPI) Up or Down from an
industry-standard x8 or x8/x16 parallel NOR Flash
Slave Serial, typically downloaded from a processor
Slave Parallel, typically downloaded from a processor
Boundary Scan (JTAG), typically downloaded from a
processor or system tester.
DS635 (v2.0) September 9, 2009
Product Specification
XA Spartan-3E FPGAs support the following single-ended
standards:
•
•
•
•
•
3.3V low-voltage TTL (LVTTL)
Low-voltage CMOS (LVCMOS) at 3.3V, 2.5V, 1.8V,
1.5V, or 1.2V
3V PCI at 33 MHz
HSTL I and III at 1.8V, commonly used in memory
applications
SSTL I at 1.8V and 2.5V, commonly used for memory
applications
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XA Spartan-3E FPGAs support the following differential
standards:
•
•
•
•
LVDS
Bus LVDS
mini-LVDS
RSDS
•
•
•
Differential HSTL (1.8V, Types I and III)
Differential SSTL (2.5V and 1.8V, Type I)
2.5V LVPECL inputs
Table 2: Available User I/Os and Differential (Diff) I/O Pairs
Package
VQG100
CPG132
TQG144
PQG208
FTG256
FGG400
FGG484
Size (mm)
16 x 16
8x8
22 x 22
28 x 28
17 x 17
21 x 21
23 x 23
Device
User
Diff
User
Diff
User
Diff
User
Diff
User
Diff
User
Diff
User
Diff
XA3S100E
66
(7)
30
(2)
83
(11)
35
(2)
108
(28)
40
(4)
-
-
-
-
-
-
-
-
XA3S250E
66
(7)
30
(2)
92
(7)
41
(2)
108
(28)
40
(4)
158
(32)
65
(5)
172
(40)
68
(8)
-
-
-
-
XA3S500E
-
-
92
(7)
41
(2)
-
-
158
(32)
65
(5)
190
(41)
77
(8)
-
-
-
-
XA3S1200E
-
-
-
-
-
-
-
-
190
(40)
77
(8)
304
(72)
124
(20)
-
-
XA3S1600E
-
-
-
-
-
-
-
-
-
-
304
(72)
124
(20)
376
(82)
156
(21)
Notes:
1.
2.
All XA Spartan-3E devices provided in the same package are pin-compatible as further described in Module 4: Pinout Descriptions of
DS312.
The number shown in bold indicates the maximum number of I/O and input-only pins. The number shown in (italics) indicates the number
of input-only pins.
DS635 (v2.0) September 9, 2009
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Package Marking
for the quad-flat packages, except that the marking is
rotated with respect to the ball A1 indicator. Figure 4 shows
the top marking for XA Spartan-3E FPGAs in the CPG132
package.
Figure 2 provides a top marking example for XA Spartan-3E
FPGAs in the quad-flat packages. Figure 3 shows the top
marking for XA Spartan-3E FPGAs in BGA packages
except the 132-ball chip-scale package (CPG132). The
markings for the BGA packages are nearly identical to those
Note: No marking is shown for stepping.
Mask Revision Code
Fabrication Code
R
SPARTAN
R
Process Technology
Device Type
Package
XA3S250E TM
PQG208AGQ0525
D1234567A
Date Code
Speed Grade
4I
Lot Code
Temperature Range
Pin P1
DS635-1_02_082807
Figure 2: XA Spartan-3E FPGA QFP Package Marking Example
Mask Revision Code
BGA Ball A1
R
SPARTAN
R
XA3S250ETM
FTG256AGQ0525
FTG256AGQ0525
D1234567A
D1234567A
4I
Device Type
Package
Fabrication Code
Process Code
Date Code
Lot Code
Speed Grade
Temperature Range
DS635_03_082807
Figure 3: XA Spartan-3E FPGA BGA Package Marking Example
Ball A1
Lot Code
3S250E
F1234567-0525
PHILIPPINES
Package
C6 = CPG132
C6AGQ
Mask Revision Code
Device Type
Date Code
Temperature Range
4I
Speed Grade
Process Code
Fabrication Code
DS635_04_082807
Figure 4: XA Spartan-3E FPGA CPG132 Package Marking Example
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Ordering Information
XA Spartan-3E FPGAs are available in Pb-free packaging
options for all device/package combinations. All devices are
in Pb-free packages only, with a “G” character to the ordering code. All devices are available in either I-Grade or
Q-Grade temperature ranges. Only the -4 speed grade is
available for the XA Spartan-3E family. See Table 2 for valid
device/package combinations.
Pb-Free Packaging
Example:
XA3S250E -4 FT G 256 I
Device Type
Temperature Range:
I = I-Grade (TJ = –40oC to 100oC)
Q = Q-Grade (TJ = –40oC to 125oC)
Number of Pins
Pb-free
Speed Grade
Package Type
DS635_06_121608
Device
XA3S100E
Speed Grade
-4 Only
Package Type / Number of Pins
Temperature Range ( TJ )
VQG100
100-pin Very Thin Quad Flat Pack (VQFP)
I I-Grade (–40°C to 100°C)
XA3S250E
CPG132
132-ball Chip-Scale Package (CSP)
Q Q-Grade (–40°C to 125°C)
XA3S500E
TQG144
144-pin Thin Quad Flat Pack (TQFP)
XA3S1200E
PQG208
208-pin Plastic Quad Flat Pack (PQFP)
XA3S1600E
FTG256
256-ball Fine-Pitch Thin Ball Grid Array (FTBGA)
FGG400
400-ball Fine-Pitch Ball Grid Array (FBGA)
FGG484
484-ball Fine-Pitch Ball Grid Array (FBGA)
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Power Supply Specifications
Table 3: Supply Voltage Thresholds for Power-On Reset
Symbol
Description
Min
Max
Units
VCCINTT
Threshold for the VCCINT supply
0.4
1.0
V
VCCAUXT
Threshold for the VCCAUX supply
0.8
2.0
V
VCCO2T
Threshold for the VCCO Bank 2 supply
0.4
1.0
V
Notes:
1.
2.
VCCINT, VCCAUX, and VCCO supplies to the FPGA can be applied in any order. However, the FPGA’s configuration source (SPI Flash, parallel
NOR Flash, microcontroller) might have specific requirements. Check the data sheet for the attached configuration source.
To ensure successful power-on, VCCINT, VCCO Bank 2, and VCCAUX supplies must rise through their respective threshold-voltage ranges with
no dips at any point.
Table 4: Supply Voltage Ramp Rate
Symbol
Description
Min
Max
Units
VCCINTR
Ramp rate from GND to valid VCCINT supply level
0.2
50
ms
VCCAUXR
Ramp rate from GND to valid VCCAUX supply level
0.2
50
ms
VCCO2R
Ramp rate from GND to valid VCCO Bank 2 supply level
0.2
50
ms
Notes:
1.
2.
VCCINT, VCCAUX, and VCCO supplies to the FPGA can be applied in any order. However, the FPGA’s configuration source (SPI Flash, parallel
NOR Flash, microcontroller) might have specific requirements. Check the data sheet for the attached configuration source.
To ensure successful power-on, VCCINT, VCCO Bank 2, and VCCAUX supplies must rise through their respective threshold-voltage ranges with
no dips at any point.
Table 5: Supply Voltage Levels Necessary for Preserving RAM Contents
Symbol
Description
Min
Units
VDRINT
VCCINT level required to retain RAM data
1.0
V
VDRAUX
VCCAUX level required to retain RAM data
2.0
V
Notes:
1.
RAM contents include configuration data.
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DC Specifications
Table 6: General Recommended Operating Conditions
Symbol
TJ
(1)
VCCAUX
ΔVCCAUX
(2)
VIN(3,4,5,6)
TIN
Min
Nominal
Max
Units
I-Grade
–40
25
100
°C
Q-Grade
–40
25
125
°C
Internal supply voltage
1.140
1.200
1.260
V
Output driver supply voltage
1.100
-
3.465
V
Auxiliary supply voltage
2.375
2.500
2.625
V
-
-
10
mV/ms
I/O, Input-only, and
Dual-Purpose pins(3)
–0.5
–
VCCO + 0.5
V
Dedicated pins(4)
–0.5
–
VCCAUX + 0.5
V
–
–
500
ns
Junction temperature
VCCINT
VCCO
Description
Voltage variance on VCCAUX when using a DCM
Input voltage extremes to avoid
turning on I/O protection diodes
Input signal transition
time(7)
Notes:
1.
2.
3.
4.
5.
6.
7.
This VCCO range spans the lowest and highest operating voltages for all supported I/O standards. Table 9 lists the recommended VCCO
range specific to each of the single-ended I/O standards, and Table 11 lists that specific to the differential standards.
Only during DCM operation is it recommended that the rate of change of VCCAUX not exceed 10 mV/ms.
Each of the User I/O and Dual-Purpose pins is associated with one of the four banks’ VCCO rails. Meeting the VIN limit ensures that the
internal diode junctions that exist between these pins and their associated VCCO and GND rails do not turn on. See Absolute Maximum
Ratings in DS312).
All Dedicated pins (PROG_B, DONE, TCK, TDI, TDO, and TMS) draw power from the VCCAUX rail (2.5V). Meeting the VIN max limit ensures
that the internal diode junctions that exist between each of these pins and the VCCAUX and GND rails do not turn on.
Input voltages outside the recommended range is permissible provided that the IIK input clamp diode rating is met and no more than 100 pins
exceed the range simultaneously. See Absolute Maximum Ratings in DS312).
See XAPP459, "Eliminating I/O Coupling Effects when Interfacing Large-Swing Single-Ended Signals to User I/O Pins."
Measured between 10% and 90% VCCO. Follow Signal Integrity recommendations.
General DC Characteristics for I/O Pins
Table 7: General DC Characteristics of User I/O, Dual-Purpose, and Dedicated Pins
Symbol
IL
IRPU(2)
RPU(2)
Description
Leakage current at User I/O,
Input-only, Dual-Purpose, and
Dedicated pins
Current through pull-up resistor at
User I/O, Dual-Purpose, Input-only,
and Dedicated pins
Equivalent pull-up resistor value at
User I/O, Dual-Purpose, Input-only,
and Dedicated pins (based on IRPU
per Note 2)
DS635 (v2.0) September 9, 2009
Product Specification
Test Conditions
Min
Typ
Max
Units
Driver is in a high-impedance state,
VIN = 0V or VCCO max, sample-tested
–10
–
+10
μA
VIN = 0V, VCCO = 3.3V
–0.36
–
–1.24
mA
VIN = 0V, VCCO = 2.5V
–0.22
–
–0.80
mA
VIN = 0V, VCCO = 1.8V
–0.10
–
–0.42
mA
VIN = 0V, VCCO = 1.5V
–0.06
–
–0.27
mA
VIN = 0V, VCCO = 1.2V
–0.04
–
–0.22
mA
VIN = 0V, VCCO = 3.0V to 3.465V
2.4
–
10.8
kΩ
VIN = 0V, VCCO = 2.3V to 2.7V
2.7
–
11.8
kΩ
VIN = 0V, VCCO = 1.7V to 1.9V
4.3
–
20.2
kΩ
VIN = 0V, VCCO =1.4V to 1.6V
5.0
–
25.9
kΩ
VIN = 0V, VCCO = 1.14V to 1.26V
5.5
–
32.0
kΩ
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Table 7: General DC Characteristics of User I/O, Dual-Purpose, and Dedicated Pins (Continued)
Symbol
Description
Test Conditions
Min
Typ
Max
Units
IRPD(2)
Current through pull-down resistor at
User I/O, Dual-Purpose, Input-only,
and Dedicated pins
VIN = VCCO
0.10
–
0.75
mA
RPD(2)
Equivalent pull-down resistor value at
User I/O, Dual-Purpose, Input-only,
and Dedicated pins (based on IRPD
per Note 2)
VIN = VCCO = 3.0V to 3.45V
4.0
–
34.5
kΩ
VIN = VCCO = 2.3V to 2.7V
3.0
–
27.0
kΩ
VIN = VCCO = 1.7V to 1.9V
2.3
–
19.0
kΩ
VIN = VCCO = 1.4V to 1.6V
1.8
–
16.0
kΩ
VIN = VCCO = 1.14V to 1.26V
1.5
–
12.6
kΩ
All VCCO levels
–10
–
+10
μA
-
–
–
10
pF
VOCM Min ≤ VICM ≤ VOCM Max
VOD Min ≤ VID ≤ VOD Max
VCCO = 2.5V
–
120
–
Ω
IREF
VREF current per pin
CIN
Input capacitance
RDT
Resistance of optional differential
termination circuit within a differential
I/O pair. Not available on Input-only
pairs.
Notes:
1.
2.
The numbers in this table are based on the conditions set forth in Table 6.
This parameter is based on characterization. The pull-up resistance RPU = VCCO / IRPU. The pull-down resistance RPD = VIN / IRPD.
Table 8: Quiescent Supply Current Characteristics
Symbol
ICCINTQ
ICCOQ
Description
Quiescent VCCINT
supply current
Quiescent VCCO
supply current
DS635 (v2.0) September 9, 2009
Product Specification
I-Grade Maximum
Q-Grade
Maximum
Units
XA3S100E
36
58
mA
XA3S250E
104
158
mA
XA3S500E
145
300
mA
XA3S1200E
324
500
mA
XA3S1600E
457
750
mA
XA3S100E
1.5
2.0
mA
XA3S250E
1.5
3.0
mA
XA3S500E
1.5
3.0
mA
XA3S1200E
2.5
4.0
mA
XA3S1600E
2.5
4.0
mA
Device
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Table 8: Quiescent Supply Current Characteristics (Continued)
Symbol
ICCAUXQ
Description
Quiescent VCCAUX
supply current
I-Grade Maximum
Q-Grade
Maximum
Units
XA3S100E
13
22
mA
XA3S250E
26
43
mA
XA3S500E
34
63
mA
XA3S1200E
59
100
mA
XA3S1600E
86
150
mA
Device
Notes:
1.
2.
3.
4.
The numbers in this table are based on the conditions set forth in Table 6.
Quiescent supply current is measured with all I/O drivers in a high-impedance state and with all pull-up/pull-down resistors at the I/O pads
disabled. Typical values are characterized using typical devices at room temperature (TJ of 25°C at VCCINT = 1.2 V, VCCO = 3.3V, and
VCCAUX = 2.5V). The maximum limits are tested for each device at the respective maximum specified junction temperature and at maximum
voltage limits with VCCINT = 1.26V, VCCO = 3.465V, and VCCAUX = 2.625V. The FPGA is programmed with a “blank” configuration data file
(i.e., a design with no functional elements instantiated). For conditions other than those described above, (e.g., a design including functional
elements), measured quiescent current levels may be different than the values in the table. For more accurate estimates for a specific
design, use the Xilinx XPower tools.
There are two recommended ways to estimate the total power consumption (quiescent plus dynamic) for a specific design: a) The
Spartan-3E XPower Estimator provides quick, approximate, typical estimates, and does not require a netlist of the design. b) XPower
Analyzer uses a netlist as input to provide maximum estimates as well as more accurate typical estimates.
The maximum numbers in this table indicate the minimum current each power rail requires in order for the FPGA to power-on successfully.
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Single-Ended I/O Standards
Table 9: Recommended Operating Conditions for User I/Os Using Single-Ended Standards
IOSTANDARD
Attribute
VCCO for Drivers(2)
VREF
Min (V)
Nom (V)
Max (V)
VIL
VIH
Max (V)
Min (V)
Min (V)
Nom (V)
Max (V)
LVTTL
3.0
3.3
3.465
0.8
2.0
LVCMOS33(4)
3.0
3.3
3.465
0.8
2.0
LVCMOS25(4,5)
2.3
2.5
2.7
0.7
1.7
0.4
0.8
VREF is not used for
these I/O standards
LVCMOS18
1.65
1.8
1.95
LVCMOS15
1.4
1.5
1.6
0.4
0.8
LVCMOS12
1.1
1.2
1.3
0.4
0.7
PCI33_3
3.0
3.3
3.465
0.3 * VCCO
0.5 * VCCO
HSTL_I_18
1.7
1.8
1.9
0.8
0.9
1.1
VREF - 0.1
VREF + 0.1
HSTL_III_18
1.7
1.8
1.9
-
1.1
-
VREF - 0.1
VREF + 0.1
SSTL18_I
1.7
1.8
1.9
0.833
0.900
0.969
VREF - 0.125
VREF + 0.125
SSTL2_I
2.3
2.5
2.7
1.15
1.25
1.35
VREF - 0.125
VREF + 0.125
Notes:
1.
2.
3.
4.
5.
6.
Descriptions of the symbols used in this table are as follows:
VCCO – the supply voltage for output drivers
VREF – the reference voltage for setting the input switching threshold
VIL – the input voltage that indicates a Low logic level
VIH – the input voltage that indicates a High logic level
The VCCO rails supply only output drivers, not input circuits.
For device operation, the maximum signal voltage (VIH max) may be as high as VIN max. See Table 72 in DS312.
There is approximately 100 mV of hysteresis on inputs using LVCMOS33 and LVCMOS25 I/O standards.
All Dedicated pins (PROG_B, DONE, TCK, TDI, TDO, and TMS) use the LVCMOS25 standard and draw power from the VCCAUX rail (2.5V).
The Dual-Purpose configuration pins use the LVCMOS standard before the User mode. When using these pins as part of a standard 2.5V
configuration interface, apply 2.5V to the VCCO lines of Banks 0, 1, and 2 at power-on as well as throughout configuration.
For information on PCI IP solutions, see www.xilinx.com/pci.
DS635 (v2.0) September 9, 2009
Product Specification
www.xilinx.com
11
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Table 10: DC Characteristics of User I/Os Using
Single-Ended Standards (Continued)
Table 10: DC Characteristics of User I/Os Using
Single-Ended Standards
Test
Conditions
LVCMOS33(3)
LVCMOS25(3)
LVCMOS18(3)
LVCMOS15(3)
Logic Level
Characteristics
IOL
IOH
(mA)
(mA)
VOL
Max (V)
VOH
Min (V)
2
–2
0.4
VCCO - 0.4
PCI33_3(4)
1.5
–0.5
10% VCCO
90% VCCO
–6
HSTL_I_18
8
–8
0.4
VCCO - 0.4
8
–8
HSTL_III_18
24
–8
0.4
VCCO - 0.4
12
12
–12
SSTL18_I
6.7
–6.7
VTT – 0.475
VTT + 0.475
16
16
–16
SSTL2_I
8.1
–8.1
VTT – 0.61
VTT + 0.61
2
2
–2
4
4
–4
1.
6
6
–6
2.
8
8
–8
12
12
–12
16
16
–16
2
2
–2
4
4
–4
6
6
–6
8
8
–8
12
12
–12
2
2
–2
4
4
–4
6
6
–6
8
8
–8
2
2
–2
4
4
–4
6
6
–6
IOL
IOH
(mA)
(mA)
VOL
Max (V)
VOH
Min (V)
2
2
–2
0.4
2.4
4
4
–4
6
6
8
IOSTANDARD
Attribute
LVTTL(3)
Test
Conditions
Logic Level
Characteristics
DS635 (v2.0) September 9, 2009
Product Specification
0.4
IOSTANDARD
Attribute
LVCMOS12(3)
VCCO – 0.4
2
Notes:
The numbers in this table are based on the conditions set forth in
Table 6 and Table 9.
Descriptions of the symbols used in this table are as follows:
IOL – the output current condition under which VOL is tested
IOH – the output current condition under which VOH is tested
VOL – the output voltage that indicates a Low logic level
VOH – the output voltage that indicates a High logic level
VCCO – the supply voltage for output drivers
VTT – the voltage applied to a resistor termination
0.4
VCCO – 0.4
3.
4.
0.4
VCCO – 0.4
0.4
VCCO – 0.4
For the LVCMOS and LVTTL standards: the same VOL and VOH
limits apply for both the Fast and Slow slew attributes.
Tested according to the relevant PCI specifications. For
information on PCI IP solutions, see www.xilinx.com/pci.
www.xilinx.com
12
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Differential I/O Standards
Table 11: Recommended Operating Conditions for User I/Os Using Differential Signal Standards
VCCO for Drivers(1)
IOSTANDARD
Attribute
VID
VICM
Min (V)
Nom (V)
Max (V)
Min
(mV)
Nom
(mV)
Max
(mV)
Min (V)
Nom (V)
Max (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
100
800
1000
0.5
1.2
2.0
LVPECL_25(2)
Inputs Only
RSDS_25
2.375
2.50
2.625
100
200
-
0.3
1.20
1.4
DIFF_HSTL_I_18
1.7
1.8
1.9
100
-
-
0.8
-
1.1
DIFF_HSTL_III_18
1.7
1.8
1.9
100
-
-
0.8
-
1.1
DIFF_SSTL18_I
1.7
1.8
1.9
100
-
-
0.7
-
1.1
DIFF_SSTL2_I
2.3
2.5
2.7
100
-
-
1.0
-
1.5
VOH
VOL
Notes:
1.
2.
The VCCO rails supply only differential output drivers, not input circuits.
VREF inputs are not used for any of the differential I/O standards.
Table 12: DC Characteristics of User I/Os Using Differential Signal Standards
ΔVOD
VOD
IOSTANDARD
Attribute
Min
(mV)
Typ
(mV)
ΔVOCM
VOCM
Max
(mV)
Min
(mV)
Max
(mV)
Min
(V)
Typ
(V)
Max
(V)
Min
(mV)
Max
(mV)
Min
(V)
Max
(V)
LVDS_25
250
350
450
–
–
1.125
–
1.375
–
–
–
–
BLVDS_25
250
350
450
–
–
–
1.20
–
–
–
–
–
MINI_LVDS_25
300
–
600
–
50
1.0
–
1.4
–
50
–
–
RSDS_25
100
–
400
–
–
1.1
–
1.4
–
–
–
–
DIFF_HSTL_I_18
–
–
–
–
–
–
–
–
–
–
VCCO – 0.4
0.4
DIFF_HSTL_III_18
–
–
–
–
–
–
–
–
–
–
VCCO – 0.4
0.4
DIFF_SSTL18_I
–
–
–
–
–
–
–
–
–
–
VTT + 0.475
VTT – 0.475
DIFF_SSTL2_I
–
–
–
–
–
–
–
–
–
–
VTT + 0.61
VTT – 0.61
Notes:
1.
2.
3.
The numbers in this table are based on the conditions set forth in Table 6, and Table 11.
Output voltage measurements for all differential standards are made with a termination resistor (RT) of 100Ω across the N and P pins of the
differential signal pair. The exception is for BLVDS, shown in Figure 5 below.
At any given time, no more than two of the following differential output standards may be assigned to an I/O bank: LVDS_25, RSDS_25,
MINI_LVDS_25
DS635 (v2.0) September 9, 2009
Product Specification
www.xilinx.com
13
R
1/4th of Bourns
Part Number
CAT16-LV4F12
VCCO = 2.5V
1/4th of Bourns
Part Number
CAT16-PT4F4
VCCO = 2.5V
Z0 = 50Ω
165Ω
140Ω
Z0 = 50Ω
100Ω
165Ω
DS635_05_082807
Figure 5: External Termination Resistors for BLVDS Transmitter and BLVDS Receiver
Switching Characteristics
I/O Timing
Table 13: Pin-to-Pin Clock-to-Output Times for the IOB Output Path
-4 Speed
Grade
Symbol
Description
Conditions
When reading from the Output
Flip-Flop (OFF), the time from
the active transition on the
Global Clock pin to data
appearing at the Output pin. The
DCM is used.
LVCMOS25(2), 12mA
output drive, Fast slew rate,
with DCM(3)
Max
Units
XA3S100E
2.79
ns
XA3S250E
3.45
ns
XA3S500E
3.46
ns
XA3S1200E
3.46
ns
XA3S1600E
3.45
ns
XA3S100E
5.92
ns
XA3S250E
5.43
ns
XA3S500E
5.51
ns
XA3S1200E
5.94
ns
XA3S1600E
6.05
ns
Device
Clock-to-Output Times
TICKOFDCM
TICKOF
When reading from OFF, the
time from the active transition on
the Global Clock pin to data
appearing at the Output pin. The
DCM is not used.
LVCMOS25(2), 12mA
output drive, Fast slew rate,
without DCM
Notes:
1.
2.
3.
4.
The numbers in this table are tested using the methodology presented in Table 19 and are based on the operating conditions set forth in
Table 6 and Table 9.
This clock-to-output time requires adjustment whenever a signal standard other than LVCMOS25 is assigned to the Global Clock Input or a
standard other than LVCMOS25 with 12 mA drive and Fast slew rate is assigned to the data Output. If the former is true, add the appropriate
Input adjustment from Table 17. If the latter is true, add the appropriate Output adjustment from Table 18.
DCM output jitter is included in all measurements.
For minimums, use the values reported by the Xilinx timing analyzer.
DS635 (v2.0) September 9, 2009
Product Specification
www.xilinx.com
14
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Table 14: Pin-to-Pin Setup and Hold Times for the IOB Input Path (System Synchronous)
Symbol
Description
Conditions
IFD_
DELAY_
VALUE=
-4 Speed
Grade
Device
Min
Units
XA3S100E
2.98
ns
XA3S250E
2.59
ns
XA3S500E
2.59
ns
XA3S1200E
2.58
ns
XA3S1600E
2.59
ns
Setup Times
TPSDCM
TPSFD
When writing to the Input Flip-Flop
(IFF), the time from the setup of
data at the Input pin to the active
transition at a Global Clock pin.
The DCM is used. No Input Delay
is programmed.
LVCMOS25(2),
IFD_DELAY_VALUE = 0,
with DCM(4)
When writing to IFF, the time from
the setup of data at the Input pin to
an active transition at the Global
Clock pin. The DCM is not used.
The Input Delay is programmed.
LVCMOS25(2),
2
XA3S100E
3.58
ns
IFD_DELAY_VALUE =
default software setting
3
XA3S250E
3.91
ns
2
XA3S500E
4.02
ns
5
XA3S1200E
5.52
ns
4
XA3S1600E
4.46
ns
0
XA3S100E
–0.52
ns
XA3S250E
0.14
ns
XA3S500E
0.14
ns
XA3S1200E
0.15
ns
XA3S1600E
0.14
ns
0
Hold Times
TPHDCM
TPHFD
When writing to IFF, the time from
the active transition at the Global
Clock pin to the point when data
must be held at the Input pin. The
DCM is used. No Input Delay is
programmed.
LVCMOS25(3),
IFD_DELAY_VALUE = 0,
with DCM(4)
When writing to IFF, the time from
the active transition at the Global
Clock pin to the point when data
must be held at the Input pin. The
DCM is not used. The Input Delay
is programmed.
LVCMOS25(3),
2
XA3S100E
–0.24
ns
IFD_DELAY_VALUE =
default software setting
3
XA3S250E
–0.32
ns
2
XA3S500E
–0.49
ns
5
XA3S1200E
–0.63
ns
4
XA3S1600E
–0.39
ns
Notes:
1.
2.
3.
4.
The numbers in this table are tested using the methodology presented in Table 19 and are based on the operating conditions set forth in
Table 6 and Table 9.
This setup time requires adjustment whenever a signal standard other than LVCMOS25 is assigned to the Global Clock Input or the data
Input. If this is true of the Global Clock Input, subtract the appropriate adjustment from Table 17. If this is true of the data Input, add the
appropriate Input adjustment from the same table.
This hold time requires adjustment whenever a signal standard other than LVCMOS25 is assigned to the Global Clock Input or the data
Input. If this is true of the Global Clock Input, add the appropriate Input adjustment from Table 17. If this is true of the data Input, subtract
the appropriate Input adjustment from the same table. When the hold time is negative, it is possible to change the data before the clock’s
active edge.
DCM output jitter is included in all measurements.
DS635 (v2.0) September 9, 2009
Product Specification
www.xilinx.com
15
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Table 15: Setup and Hold Times for the IOB Input Path
Symbol
Description
Conditions
-4
Speed
Grade
IFD_
DELAY_
VALUE
Device
Min
Units
All
2.12
ns
Setup Times
TIOPICK
Time from the setup of data at the Input
pin to the active transition at the ICLK input
of the Input Flip-Flop (IFF). No Input Delay
is programmed.
LVCMOS25(2),
IFD_DELAY_VALUE = 0
0
TIOPICKD
Time from the setup of data at the Input
pin to the active transition at the IFF’s ICLK
input. The Input Delay is programmed.
LVCMOS25(2),
IFD_DELAY_VALUE =
default software setting
2
XA3S100E
6.49
ns
3
XA3S250E
6.85
ns
2
XA3S500E
7.01
ns
5
XA3S1200E
8.67
ns
4
XA3S1600E
7.69
ns
–0.76
ns
Hold Times
TIOICKP
Time from the active transition at the IFF’s
ICLK input to the point where data must be
held at the Input pin. No Input Delay is
programmed.
LVCMOS25(2),
IFD_DELAY_VALUE = 0
0
TIOICKPD
Time from the active transition at the IFF’s
ICLK input to the point where data must be
held at the Input pin. The Input Delay is
programmed.
LVCMOS25(2),
IFD_DELAY_VALUE =
default software setting
2
XA3S100E
–3.93
ns
3
XA3S250E
–3.51
ns
2
XA3S500E
–3.74
ns
5
XA3S1200E
–4.30
ns
4
XA3S1600E
–4.14
ns
1.80
ns
All
Set/Reset Pulse Width
TRPW_IOB
Minimum pulse width to SR control input
on IOB
All
Notes:
1.
2.
3.
The numbers in this table are tested using the methodology presented in Table 19 and are based on the operating conditions set forth in
Table 6 and Table 9.
This setup time requires adjustment whenever a signal standard other than LVCMOS25 is assigned to the data Input. If this is true, add the
appropriate Input adjustment from Table 17.
These hold times require adjustment whenever a signal standard other than LVCMOS25 is assigned to the data Input. If this is true, subtract
the appropriate Input adjustment from Table 17. When the hold time is negative, it is possible to change the data before the clock’s active
edge.
DS635 (v2.0) September 9, 2009
Product Specification
www.xilinx.com
16
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Table 16: Propagation Times for the IOB Input Path
Symbol
-4 Speed
Grade
IFD_
DELAY_
VALUE
Device
Max
Units
All
2.25
ns
Description
Conditions
TIOPLI
The time it takes for data to
travel from the Input pin through
the IFF latch to the I output with
no input delay programmed
LVCMOS25(2),
IFD_DELAY_VALUE = 0
0
TIOPLID
The time it takes for data to
travel from the Input pin through
the IFF latch to the I output with
the input delay programmed
LVCMOS25(2),
IFD_DELAY_VALUE =
default software setting
2
XA3S100E
5.97
ns
3
XA3S250E
6.33
ns
2
XA3S500E
6.49
ns
5
XA3S1200E
8.15
ns
4
XA3S1600E
7.16
ns
Propagation Times
Notes:
1.
2.
The numbers in this table are tested using the methodology presented in Table 19 and are based on the operating conditions set forth in
Table 6 and Table 9.
This propagation time requires adjustment whenever a signal standard other than LVCMOS25 is assigned to the data Input. When this is
true, add the appropriate Input adjustment from Table 17.
Table 17: Input Timing Adjustments by IOSTANDARD
Convert Input Time from
LVCMOS25 to the Following
Signal Standard
(IOSTANDARD)
Table 17: Input Timing Adjustments by IOSTANDARD
Add the
Adjustment Below
-4 Speed Grade
Convert Input Time from
LVCMOS25 to the Following
Signal Standard
(IOSTANDARD)
Units
Add the
Adjustment Below
-4 Speed Grade
Units
Differential Standards
Single-Ended Standards
LVTTL
0.43
ns
LVDS_25
0.49
ns
LVCMOS33
0.43
ns
BLVDS_25
0.39
ns
LVCMOS25
0
ns
MINI_LVDS_25
0.49
ns
LVCMOS18
0.98
ns
LVPECL_25
0.27
ns
LVCMOS15
0.63
ns
RSDS_25
0.49
ns
LVCMOS12
0.27
ns
DIFF_HSTL_I_18
0.49
ns
PCI33_3
0.42
ns
DIFF_HSTL_III_18
0.49
ns
HSTL_I_18
0.12
ns
DIFF_SSTL18_I
0.30
ns
HSTL_III_18
0.17
ns
DIFF_SSTL2_I
0.32
ns
SSTL18_I
0.30
ns
Notes:
ns
1.
SSTL2_I
0.15
2.
DS635 (v2.0) September 9, 2009
Product Specification
The numbers in this table are tested using the methodology
presented in Table 19 and are based on the operating conditions
set forth in Table 6, Table 9, and Table 11.
These adjustments are used to convert input path times originally
specified for the LVCMOS25 standard to times that correspond to
other signal standards.
www.xilinx.com
17
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Table 18: Output Timing Adjustments for IOB (Continued)
Table 18: Output Timing Adjustments for IOB
Convert Output Time from
LVCMOS25 with 12mA Drive and
Fast Slew Rate to the Following
Signal Standard (IOSTANDARD)
Add the
Adjustment
Below
-4 Speed
Grade
Slow
Units
2 mA
5.24
ns
ns
4 mA
3.21
ns
2.49
ns
1.90
ns
LVCMOS18
Fast
LVCMOS33
Slow
Fast
LVCMOS25
Slow
Fast
2 mA
5.41
Add the
Adjustment
Below
-4 Speed
Grade
Units
Single-Ended Standards
LVTTL
Convert Output Time from
LVCMOS25 with 12mA Drive and
Fast Slew Rate to the Following
Signal Standard (IOSTANDARD)
Slow
4 mA
2.41
ns
6 mA
6 mA
1.90
ns
8 mA
8 mA
0.67
ns
Fast
2 mA
4.15
ns
2.13
ns
1.14
ns
12 mA
0.70
ns
4 mA
16 mA
0.43
ns
6 mA
2 mA
5.00
ns
4 mA
1.96
ns
6 mA
1.45
ns
8 mA
0.34
ns
LVCMOS15
Slow
Fast
8 mA
0.75
ns
2 mA
4.68
ns
4 mA
3.97
ns
6 mA
3.11
ns
2 mA
3.38
ns
12 mA
0.30
ns
16 mA
0.30
ns
4 mA
2.70
ns
6 mA
1.53
ns
Slow
2 mA
6.63
ns
Fast
2 mA
2 mA
5.29
ns
4 mA
1.89
ns
6 mA
1.04
ns
LVCMOS12
4.44
ns
0.34
ns
0.55
ns
8 mA
0.69
ns
HSTL_I_18
12 mA
0.42
ns
HSTL_III_18
16 mA
0.43
ns
PCI33_3
0.46
ns
0.25
ns
–0.20
ns
2 mA
4.87
ns
SSTL18_I
4 mA
1.52
ns
SSTL2_I
6 mA
0.39
ns
Differential Standards
8 mA
0.34
ns
LVDS_25
–0.55
ns
12 mA
0.30
ns
BLVDS_25
0.04
ns
16 mA
0.30
ns
MINI_LVDS_25
–0.56
ns
Input Only
ns
–0.48
ns
2 mA
4.21
ns
LVPECL_25
4 mA
2.26
ns
RSDS_25
6 mA
1.52
ns
DIFF_HSTL_I_18
0.42
ns
0.55
ns
8 mA
1.08
ns
DIFF_HSTL_III_18
12 mA
0.68
ns
DIFF_SSTL18_I
0.40
ns
2 mA
3.67
ns
DIFF_SSTL2_I
0.44
ns
4 mA
1.72
ns
Notes:
6 mA
0.46
ns
1.
8 mA
0.21
ns
12 mA
0
ns
DS635 (v2.0) September 9, 2009
Product Specification
2.
The numbers in this table are tested using the methodology
presented in Table 19 and are based on the operating conditions
set forth in Table 6, Table 9, and Table 11.
These adjustments are used to convert output- and
three-state-path times originally specified for the LVCMOS25
standard with 12 mA drive and Fast slew rate to times that
correspond to other signal standards. Do not adjust times that
measure when outputs go into a high-impedance state.
www.xilinx.com
18
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Table 19: Test Methods for Timing Measurement at I/Os
Signal Standard
(IOSTANDARD)
Inputs
Inputs and
Outputs
Outputs
VREF (V)
VL (V)
VH (V)
RT (Ω)
VT (V)
VM (V)
LVTTL
-
0
3.3
1M
0
1.4
LVCMOS33
-
0
3.3
1M
0
1.65
LVCMOS25
-
0
2.5
1M
0
1.25
LVCMOS18
-
0
1.8
1M
0
0.9
LVCMOS15
-
0
1.5
1M
0
0.75
LVCMOS12
-
0
1.2
1M
0
0.6
-
Note 3
Note 3
25
0
0.94
25
3.3
2.03
Single-Ended
PCI33_3
Rising
Falling
HSTL_I_18
0.9
VREF – 0.5
VREF + 0.5
50
0.9
VREF
HSTL_III_18
1.1
VREF – 0.5
VREF + 0.5
50
1.8
VREF
SSTL18_I
0.9
VREF – 0.5
VREF + 0.5
50
0.9
VREF
SSTL2_I
1.25
VREF – 0.75
VREF + 0.75
50
1.25
VREF
LVDS_25
-
VICM – 0.125
VICM + 0.125
50
1.2
VICM
BLVDS_25
-
VICM – 0.125
VICM + 0.125
1M
0
VICM
MINI_LVDS_25
-
VICM – 0.125
VICM + 0.125
50
1.2
VICM
LVPECL_25
-
VICM – 0.3
VICM + 0.3
1M
0
VICM
RSDS_25
-
VICM – 0.1
VICM + 0.1
50
1.2
VICM
DIFF_HSTL_I_18
-
VREF – 0.5
VREF + 0.5
50
0.9
VICM
DIFF_HSTL_III_18
-
VREF – 0.5
VREF + 0.5
50
1.8
VICM
DIFF_SSTL18_I
-
VREF – 0.5
VREF + 0.5
50
0.9
VICM
DIFF_SSTL2_I
-
VREF – 0.5
VREF + 0.5
50
1.25
VICM
Differential
Notes:
1.
2.
3.
Descriptions of the relevant symbols are as follows:
VREF – The reference voltage for setting the input switching threshold
VICM – The common mode input voltage
VM – Voltage of measurement point on signal transition
VL – Low-level test voltage at Input pin
VH – High-level test voltage at Input pin
RT – Effective termination resistance, which takes on a value of 1MΩ when no parallel termination is required
VT – Termination voltage
The load capacitance (CL) at the Output pin is 0 pF for all signal standards.
According to the PCI specification.
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Configurable Logic Block Timing
Table 20: CLB (SLICEM) Timing
-4 Speed Grade
Symbol
Description
Min
Max
Units
When reading from the FFX (FFY) Flip-Flop, the time from the active
transition at the CLK input to data appearing at the XQ (YQ) output
-
0.60
ns
TAS
Time from the setup of data at the F or G input to the active transition
at the CLK input of the CLB
0.52
-
ns
TDICK
Time from the setup of data at the BX or BY input to the active
transition at the CLK input of the CLB
1.81
-
ns
Clock-to-Output Times
TCKO
Setup Times
Hold Times
TAH
Time from the active transition at the CLK input to the point where
data is last held at the F or G input
0
-
ns
TCKDI
Time from the active transition at the CLK input to the point where
data is last held at the BX or BY input
0
-
ns
Clock Timing
TCH
The High pulse width of the CLB’s CLK signal
0.80
-
ns
TCL
The Low pulse width of the CLK signal
0.80
-
ns
FTOG
Toggle frequency (for export control)
0
572
MHz
-
0.76
ns
1.80
-
ns
Propagation Times
TILO
The time it takes for data to travel from the CLB’s F (G) input to the X
(Y) output
Set/Reset Pulse Width
TRPW_CLB
The minimum allowable pulse width, High or Low, to the CLB’s SR
input
Notes:
1.
The numbers in this table are based on the operating conditions set forth in Table 6.
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Table 21: CLB Distributed RAM Switching Characteristics
-4
Symbol
Description
Min
Max
Units
-
2.35
ns
Clock-to-Output Times
TSHCKO
Time from the active edge at the CLK input to data appearing on the
distributed RAM output
Setup Times
TDS
Setup time of data at the BX or BY input before the active transition at the
CLK input of the distributed RAM
0.46
-
ns
TAS
Setup time of the F/G address inputs before the active transition at the CLK
input of the distributed RAM
0.52
-
ns
TWS
Setup time of the write enable input before the active transition at the CLK
input of the distributed RAM
0.40
-
ns
Hold time of the BX, BY data inputs after the active transition at the CLK
input of the distributed RAM
0.15
-
ns
0
-
ns
1.01
-
ns
Min
Max
Units
Time from the active edge at the CLK input to data appearing on the shift
register output
-
4.16
ns
Setup time of data at the BX or BY input before the active transition at the
CLK input of the shift register
0.46
-
ns
Hold time of the BX or BY data input after the active transition at the CLK
input of the shift register
0.16
-
ns
1.01
-
ns
Hold Times
TDH
TAH, TWH
Hold time of the F/G address inputs or the write enable input after the active
transition at the CLK input of the distributed RAM
Clock Pulse Width
TWPH, TWPL
Minimum High or Low pulse width at CLK input
Table 22: CLB Shift Register Switching Characteristics
-4
Symbol
Description
Clock-to-Output Times
TREG
Setup Times
TSRLDS
Hold Times
TSRLDH
Clock Pulse Width
TWPH, TWPL
Minimum High or Low pulse width at CLK input
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Clock Buffer/Multiplexer Switching Characteristics
Table 23: Clock Distribution Switching Characteristics
Maximum
Description
Symbol
-4 Speed Grade
Units
Global clock buffer (BUFG, BUFGMUX, BUFGCE) I input to O-output
delay
TGIO
1.46
ns
Global clock multiplexer (BUFGMUX) select S-input setup to I0 and I1
inputs. Same as BUFGCE enable CE-input
TGSI
0.63
ns
FBUFG
311
MHz
Frequency of signals distributed on global buffers (all sides)
18 x 18 Embedded Multiplier Timing
Table 24: 18 x 18 Embedded Multiplier Timing
-4 Speed Grade
Symbol
Description
Min
Max
Units
Combinatorial multiplier propagation delay from the A and B inputs to
the P outputs, assuming 18-bit inputs and a 36-bit product (AREG,
BREG, and PREG registers unused)
-
4.88(1)
ns
Combinatorial Delay
TMULT
Clock-to-Output Times
TMSCKP_P
Clock-to-output delay from the active transition of the CLK input to valid
data appearing on the P outputs when using the PREG register(2)
-
1.10
ns
TMSCKP_A
Clock-to-output delay from the active transition of the CLK input to valid
data appearing on the P outputs when using either the AREG or BREG
register(3)
-
4.97
ns
Data setup time at the A or B input before the active transition at the
CLK when using only the PREG output register (AREG, BREG
registers unused)(2)
3.98
-
ns
TMSDCK_A
Data setup time at the A input before the active transition at the CLK
when using the AREG input register(3)
0.23
-
ns
TMSDCK_B
Data setup time at the B input before the active transition at the CLK
when using the BREG input register(3)
0.39
-
ns
Data hold time at the A or B input before the active transition at the CLK
when using only the PREG output register (AREG, BREG registers
unused)(2)
-0.97
TMSCKD_A
Data hold time at the A input before the active transition at the CLK
when using the AREG input register(3)
0.04
TMSCKD_B
Data hold time at the B input before the active transition at the CLK
when using the BREG input register(3)
0.05
TMSCKP_B
Setup Times
TMSDCK_P
Hold Times
TMSCKD_P
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Table 24: 18 x 18 Embedded Multiplier Timing (Continued)
-4 Speed Grade
Symbol
Description
Min
Max
Units
Internal operating frequency for a two-stage 18x18 multiplier using the
AREG and BREG input registers and the PREG output register(1)
0
240
MHz
Clock Frequency
FMULT
Notes:
1.
2.
3.
Combinatorial delay is less and pipelined performance is higher when multiplying input data with less than 18 bits.
The PREG register is typically used in both single-stage and two-stage pipelined multiplier implementations.
Input registers AREG or BREG are typically used when inferring a two-stage multiplier.
Block RAM Timing
Table 25: Block RAM Timing
-4 Speed Grade
Symbol
Description
Min
Max
Units
When reading from block RAM, the delay from the active transition
at the CLK input to data appearing at the DOUT output
-
2.82
ns
TBACK
Setup time for the ADDR inputs before the active transition at the
CLK input of the block RAM
0.38
-
ns
TBDCK
Setup time for data at the DIN inputs before the active transition at
the CLK input of the block RAM
0.23
-
ns
TBECK
Setup time for the EN input before the active transition at the CLK
input of the block RAM
0.77
-
ns
TBWCK
Setup time for the WE input before the active transition at the CLK
input of the block RAM
1.26
-
ns
TBCKA
Hold time on the ADDR inputs after the active transition at the CLK
input
0.14
-
ns
TBCKD
Hold time on the DIN inputs after the active transition at the CLK
input
0.13
-
ns
TBCKE
Hold time on the EN input after the active transition at the CLK input
0
-
ns
TBCKW
Hold time on the WE input after the active transition at the CLK input
0
-
ns
Clock-to-Output Times
TBCKO
Setup Times
Hold Times
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Table 25: Block RAM Timing (Continued)
-4 Speed Grade
Symbol
Description
Min
Max
Units
Clock Timing
TBPWH
High pulse width of the CLK signal
1.59
-
ns
TBPWL
Low pulse width of the CLK signal
1.59
-
ns
0
230
MHz
Clock Frequency
FBRAM
Block RAM clock frequency. RAM read output value written back
into RAM, for shift registers and circular buffers. Write-only or
read-only performance is faster.
Notes:
1.
The numbers in this table are based on the operating conditions set forth in Table 6.
Digital Clock Manager Timing
For specification purposes, the DCM consists of three key
components: the Delay-Locked Loop (DLL), the Digital Frequency Synthesizer (DFS), and the Phase Shifter (PS).
Aspects of DLL operation play a role in all DCM applications. All such applications inevitably use the CLKIN and the
CLKFB inputs connected to either the CLK0 or the CLK2X
feedback, respectively. Thus, specifications in the DLL
tables (Table 26 and Table 27) apply to any application that
only employs the DLL component. When the DFS and/or
the PS components are used together with the DLL, then
the specifications listed in the DFS and PS tables (Table 28
through Table 31) supersede any corresponding ones in the
DLL tables. DLL specifications that do not change with the
addition of DFS or PS functions are presented in Table 26
and Table 27.
Period jitter and cycle-cycle jitter are two of many different
ways of specifying clock jitter. Both specifications describe
statistical variation from a mean value.
Period jitter is the worst-case deviation from the ideal clock
period over a collection of millions of samples. In a histogram of period jitter, the mean value is the clock period.
Cycle-cycle jitter is the worst-case difference in clock period
between adjacent clock cycles in the collection of clock periods sampled. In a histogram of cycle-cycle jitter, the mean
value is zero.
Spread Spectrum
DCMs accept typical spread spectrum clocks as long as
they meet the input requirements. The DLL will track the frequency changes created by the spread spectrum clock to
drive the global clocks to the FPGA logic. See XAPP469,
Spread-Spectrum Clocking Reception for Displays
for details.
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Delay-Locked Loop
Table 26: Recommended Operating Conditions for the DLL
-4 Speed Grade
Symbol
Description
Min
Max
Units
5(2)
240(3)
MHz
FCLKIN < 150 MHz
40%
60%
-
FCLKIN > 150 MHz
45%
55%
-
FCLKIN < 150 MHz
-
±300
ps
FCLKIN > 150 MHz
-
±150
ps
Input Frequency Ranges
FCLKIN
CLKIN_FREQ_DLL
Frequency of the CLKIN clock input
Input Pulse Requirements
CLKIN_PULSE
CLKIN pulse width as a
percentage of the CLKIN
period
Input Clock Jitter Tolerance and Delay Path Variation(4)
CLKIN_CYC_JITT_DLL_LF
CLKIN_CYC_JITT_DLL_HF
Cycle-to-cycle jitter at the
CLKIN input
CLKIN_PER_JITT_DLL
Period jitter at the CLKIN input
-
±1
ns
CLKFB_DELAY_VAR_EXT
Allowable variation of off-chip feedback delay from the DCM output to
the CLKFB input
-
±1
ns
Notes:
1.
2.
3.
4.
DLL specifications apply when any of the DLL outputs (CLK0, CLK90, CLK180, CLK270, CLK2X, CLK2X180, or CLKDV) are in use.
The DFS, when operating independently of the DLL, supports lower FCLKIN frequencies. See Table 28.
To support double the maximum effective FCLKIN limit, set the CLKIN_DIVIDE_BY_2 attribute to TRUE. This attribute divides the incoming
clock frequency by two as it enters the DCM. The CLK2X output reproduces the clock frequency provided on the CLKIN input.
CLKIN input jitter beyond these limits might cause the DCM to lose lock.
Table 27: Switching Characteristics for the DLL
-4 Speed Grade
Symbol
Description
Min
Max
Units
Output Frequency Ranges
CLKOUT_FREQ_CLK0
Frequency for the CLK0 and CLK180 outputs
5
240
MHz
CLKOUT_FREQ_CLK90
Frequency for the CLK90 and CLK270 outputs
5
200
MHz
CLKOUT_FREQ_2X
Frequency for the CLK2X and CLK2X180 outputs
10
311
MHz
CLKOUT_FREQ_DV
Frequency for the CLKDV output
0.3125
160
MHz
Output Clock
Jitter(2,3,4)
CLKOUT_PER_JITT_0
Period jitter at the CLK0 output
-
±100
ps
CLKOUT_PER_JITT_90
Period jitter at the CLK90 output
-
±150
ps
CLKOUT_PER_JITT_180
Period jitter at the CLK180 output
-
±150
ps
CLKOUT_PER_JITT_270
Period jitter at the CLK270 output
-
±150
ps
CLKOUT_PER_JITT_2X
Period jitter at the CLK2X and CLK2X180 outputs
-
±[1% of
CLKIN period
+ 150]
ps
CLKOUT_PER_JITT_DV1
Period jitter at the CLKDV output when performing integer
division
-
±150
ps
CLKOUT_PER_JITT_DV2
Period jitter at the CLKDV output when performing
non-integer division
-
±[1% of
CLKIN period
+ 200]
ps
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Table 27: Switching Characteristics for the DLL (Continued)
-4 Speed Grade
Symbol
Min
Max
Units
Duty cycle variation for the CLK0, CLK90, CLK180,
CLK270, CLK2X, CLK2X180, and CLKDV outputs,
including the BUFGMUX and clock tree duty-cycle
distortion
-
±[1% of
CLKIN period
+ 400]
ps
CLKIN_CLKFB_PHASE
Phase offset between the CLKIN and CLKFB inputs
-
±200
ps
CLKOUT_PHASE_DLL
Phase offset between DLL outputs
CLK0 to CLK2X
(not CLK2X180)
-
±[1% of
CLKIN period
+ 100]
ps
All others
-
±[1% of
CLKIN period
+ 200]
ps
5 MHz < FCLKIN <
15 MHz
-
5
ms
FCLKIN > 15 MHz
-
600
μs
20
40
ps
Duty
Description
Cycle(4)
CLKOUT_DUTY_CYCLE_DLL
Phase Alignment(4)
Lock Time
LOCK_DLL(3)
When using the DLL alone: The time
from deassertion at the DCM’s Reset
input to the rising transition at its
LOCKED output. When the DCM is
locked, the CLKIN and CLKFB
signals are in phase
Delay Lines
DCM_DELAY_STEP
Finest delay resolution
Notes:
1. The numbers in this table are based on the operating conditions set forth in Table 6 and Table 26.
2. Indicates the maximum amount of output jitter that the DCM adds to the jitter on the CLKIN input.
3. For optimal jitter tolerance and faster lock time, use the CLKIN_PERIOD attribute.
4. Some jitter and duty-cycle specifications include 1% of input clock period or 0.01 UI. Example: The data sheet specifies a maximum
jitter of “±[1% of CLKIN period + 150]”. Assume the CLKIN frequency is 100 MHz. The equivalent CLKIN period is 10 ns and 1% of
10 ns is 0.1 ns or 100 ps. According to the data sheet, the maximum jitter is ±[100 ps + 150 ps] = ±250ps.
Digital Frequency Synthesizer
Table 28: Recommended Operating Conditions for the DFS
-4 Speed Grade
Symbol
Description
Min
Max
Units
0.200
333(4)
MHz
FCLKFX < 150 MHz
-
±300
ps
FCLKFX > 150 MHz
-
±150
ps
-
±1
ns
Input Frequency Ranges(2)
FCLKIN
CLKIN_FREQ_FX
Frequency for the CLKIN input
Input Clock Jitter Tolerance(3)
CLKIN_CYC_JITT_FX_HF
CLKIN_CYC_JITT_FX_LF
Cycle-to-cycle jitter at the CLKIN
input, based on CLKFX output
frequency
CLKIN_PER_JITT_FX
Period jitter at the CLKIN input
Notes:
1.
2.
3.
4.
DFS specifications apply when either of the DFS outputs (CLKFX or CLKFX180) are used.
If both DFS and DLL outputs are used on the same DCM, follow the more restrictive CLKIN_FREQ_DLL specifications in Table 26.
CLKIN input jitter beyond these limits may cause the DCM to lose lock.
To support double the maximum effective FCLKIN limit, set the CLKIN_DIVIDE_BY_2 attribute to TRUE. This attribute divides the incoming
clock frequency by two as it enters the DCM.
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Table 29: Switching Characteristics for the DFS
-4 Speed Grade
Symbol
Description
Device
Min
Max
Units
Frequency for the CLKFX and CLKFX180 outputs
All
5
311
MHz
Period jitter at the CLKFX and CLKFX180
outputs
All
Typ
Max
Output Frequency Ranges
CLKOUT_FREQ_FX
Output Clock Jitter(2,3)
CLKOUT_PER_JITT_FX
CLKIN <20 MHz
See Note 4
CLKIN > 20 MHz
ps
±[1% of
CLKFX
period
+ 100]
±[1% of
CLKFX
period
+ 200]
ps
Duty Cycle(5,6)
Duty cycle precision for the CLKFX and CLKFX180 outputs,
including the BUFGMUX and clock tree duty-cycle distortion
All
-
±[1% of
CLKFX
period
+ 400]
ps
CLKOUT_PHASE_FX
Phase offset between the DFS CLKFX output and the DLL CLK0
output when both the DFS and DLL are used
All
-
±200
ps
CLKOUT_PHASE_FX180
Phase offset between the DFS CLKFX180 output and the DLL
CLK0 output when both the DFS and DLL are used
All
-
±[1% of
CLKFX
period
+ 300]
ps
The time from deassertion at the DCM’s
Reset input to the rising transition at its
LOCKED output. The DFS asserts LOCKED
when the CLKFX and CLKFX180 signals
are valid. If using both the DLL and the DFS,
use the longer locking time.
All
-
5
ms
-
450
μs
CLKOUT_DUTY_CYCLE_FX
Phase Alignment(6)
Lock Time
LOCK_FX(2)
5 MHz < FCLKIN <
15 MHz
FCLKIN > 15 MHz
Notes:
1. The numbers in this table are based on the operating conditions set forth in Table 6 and Table 28.
2. For optimal jitter tolerance and faster lock time, use the CLKIN_PERIOD attribute.
3. Maximum output jitter is characterized within a reasonable noise environment (150 ps input period jitter, 40 SSOs and 25% CLB switching). Output
jitter strongly depends on the environment, including the number of SSOs, the output drive strength, CLB utilization, CLB switching activities, switching
frequency, power supply and PCB design. The actual maximum output jitter depends on the system application.
4. Use the Spartan-3A Jitter Calculator (www.xilinx.com/support/documentation/data_sheets/s3a_jitter_calc.zip) to estimate DFS output jitter. Use the
Clocking Wizard to determine jitter for a specific design.
5. The CLKFX and CLKFX180 outputs always have an approximate 50% duty cycle.
6. Some duty-cycle and alignment specifications include 1% of the CLKFX output period or 0.01 UI. Example: The data sheet specifies a maximum jitter
of “±[1% of CLKFX period + 300]”. Assume the CLKFX output frequency is 100 MHz. The equivalent CLKFX period is 10 ns and 1% of 10 ns is 0.1 ns
or 100 ps. According to the data sheet, the maximum jitter is ±[100 ps + 300 ps] = ±400 ps.
Phase Shifter
Table 30: Recommended Operating Conditions for the PS in Variable Phase Mode
-4 Speed Grade
Symbol
Description
Min
Max
Units
1
167
MHz
40%
60%
-
Operating Frequency Ranges
PSCLK_FREQ
(FPSCLK)
Frequency for the PSCLK input
Input Pulse Requirements
PSCLK_PULSE
PSCLK pulse width as a percentage of the PSCLK period
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Table 31: Switching Characteristics for the PS in Variable Phase Mode
Symbol
Description
Units
Phase Shifting Range
MAX_STEPS(2)
Maximum allowed number of DCM_DELAY_STEP
steps for a given CLKIN clock period, where T = CLKIN
clock period in ns. If using
CLKIN_DIVIDE_BY_2 = TRUE, double the clock
effective clock period.
CLKIN < 60 MHz
±[INTEGER(10 •
(TCLKIN – 3 ns))]
steps
CLKIN > 60 MHz
±[INTEGER(15 •
(TCLKIN – 3 ns))]
steps
FINE_SHIFT_RANGE_MIN
Minimum guaranteed delay for variable phase shifting
±[MAX_STEPS •
DCM_DELAY_STEP_MIN]
ns
FINE_SHIFT_RANGE_MAX
Maximum guaranteed delay for variable phase shifting
±[MAX_STEPS •
DCM_DELAY_STEP_MAX]
ns
Notes:
1. The numbers in this table are based on the operating conditions set forth in Table 6 and Table 30.
2. The maximum variable phase shift range, MAX_STEPS, is only valid when the DCM is has no initial fixed phase shifting, i.e., the PHASE_SHIFT
attribute is set to 0.
3. The DCM_DELAY_STEP values are provided at the bottom of Table 27.
Miscellaneous DCM Timing
Table 32: Miscellaneous DCM Timing
Symbol
Description
Min
Max
Units
DCM_RST_PW_MIN(1)
Minimum duration of a RST pulse width
3
-
CLKIN
cycles
DCM_RST_PW_MAX(2)
Maximum duration of a RST pulse width
N/A
N/A
seconds
N/A
N/A
seconds
N/A
N/A
minutes
N/A
N/A
minutes
DCM_CONFIG_LAG_TIME(3)
Maximum duration from VCCINT applied to FPGA
configuration successfully completed (DONE pin goes
High) and clocks applied to DCM DLL
Notes:
1.
2.
3.
This limit only applies to applications that use the DCM DLL outputs (CLK0, CLK90, CLK180, CLK270, CLK2X, CLK2X180, and CLKDV).
The DCM DFS outputs (CLKFX, CLKFX180) are unaffected.
This specification is equivalent to the Virtex-4 DCM_RESET specification. This specification does not apply for Spartan-3E FPGAs.
This specification is equivalent to the Virtex-4 TCONFIG specification. This specification does not apply for Spartan-3E FPGAs.
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Configuration and JTAG Timing
Table 33: Power-On Timing and the Beginning of Configuration
-4 Speed Grade
Symbol
TPOR(2)
Description
Device
The time from the application of VCCINT, VCCAUX, and VCCO
Bank 2 supply voltage ramps (whichever occurs last) to the
rising transition of the INIT_B pin
Min
Max
Units
XA3S100E
-
5
ms
XA3S250E
-
5
ms
XA3S500E
-
5
ms
XA3S1200E
-
5
ms
XA3S1600E
-
7
ms
0.5
-
μs
XA3S100E
-
0.5
ms
XA3S250E
-
0.5
ms
XA3S500E
-
1
ms
XA3S1200E
-
2
ms
TPROG
The width of the low-going pulse on the PROG_B pin
All
TPL(2)
The time from the rising edge of the PROG_B pin to the
rising transition on the INIT_B pin
XA3S1600E
-
2
ms
TINIT
Minimum Low pulse width on INIT_B output
All
250
-
ns
TICCK(3)
The time from the rising edge of the INIT_B pin to the
generation of the configuration clock signal at the CCLK
output pin
All
0.5
4.0
μs
Notes:
1.
2.
3.
The numbers in this table are based on the operating conditions set forth in Table 6. This means power must be applied to all VCCINT, VCCO,
and VCCAUX lines.
Power-on reset and the clearing of configuration memory occurs during this period.
This specification applies only to the Master Serial, SPI, BPI-Up, and BPI-Down modes.
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Configuration Clock (CCLK) Characteristics
Table 34: Master Mode CCLK Output Period by ConfigRate Option Setting
ConfigRate
Setting
Temperature
Range
Minimum
Maximum
Units
1
(power-on value
and default value)
I-Grade
Q-Grade
485
1,250
ns
TCCLK3
3
I-Grade
Q-Grade
242
625
ns
TCCLK6
6
I-Grade
Q-Grade
121
313
ns
TCCLK12
12
I-Grade
Q-Grade
60.6
157
ns
TCCLK25
25
I-Grade
Q-Grade
30.3
78.2
ns
TCCLK50
50
I-Grade
Q-Grade
15.1
39.1
ns
Symbol
TCCLK1
Description
CCLK clock period by
ConfigRate setting
Notes:
1.
Set the ConfigRate option value when generating a configuration bitstream. See Bitstream Generator (BitGen) Options in DS312, Module 2.
Table 35: Master Mode CCLK Output Frequency by ConfigRate Option Setting
ConfigRate
Setting
Temperature
Range
Minimum
Maximum
Units
1
(power-on value
and default value)
I-Grade
Q-Grade
0.8
2.1
MHz
FCCLK3
3
I-Grade
Q-Grade
1.6
4.2
MHz
FCCLK6
6
I-Grade
Q-Grade
3.2
8.3
MHz
FCCLK12
12
I-Grade
Q-Grade
6.4
16.5
MHz
FCCLK25
25
I-Grade
Q-Grade
12.8
33.0
MHz
FCCLK50
50
I-Grade
Q-Grade
25.6
66.0
MHz
Symbol
FCCLK1
Description
Equivalent CCLK clock
frequency by ConfigRate
setting
Table 36: Master Mode CCLK Output Minimum Low and High Time
Symbol
TMCCL,
TMCCH
ConfigRate Setting
Description
Master mode CCLK minimum
Low and High time
I-Grade
Q-Grade
1
3
6
12
25
50
235
117
58
29.3
14.5
7.3
Units
ns
Table 37: Slave Mode CCLK Input Low and High Time
Symbol
TSCCL,
TSCCH
Description
CCLK Low and High time
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Min
Max
Units
5
∞
ns
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Master Serial and Slave Serial Mode Timing
Table 38: Timing for the Master Serial and Slave Serial Configuration Modes
Symbol
Slave/
Master
Description
-4 Speed Grade
Min
Max
Units
Both
1.5
10.0
ns
Both
11.0
-
ns
Both
0
-
ns
Clock-to-Output Times
TCCO
The time from the falling transition on the CCLK pin to data
appearing at the DOUT pin
Setup Times
TDCC
The time from the setup of data at the DIN pin to the active edge of
the CCLK pin
Hold Times
TCCD
The time from the active edge of the CCLK pin to the point when
data is last held at the DIN pin
Clock Timing
TCCH
TCCL
FCCSER
High pulse width at the CCLK input pin
Low pulse width at the CCLK input pin
Frequency of the clock signal at
the CCLK input pin
No bitstream compression
With bitstream compression
Master
See Table 36
Slave
See Table 37
Master
See Table 36
Slave
See Table 37
Slave
0
66(2)
MHz
0
20
MHz
Notes:
1.
2.
The numbers in this table are based on the operating conditions set forth in Table 6.
For serial configuration with a daisy-chain of multiple FPGAs, the maximum limit is 25 MHz.
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Slave Parallel Mode Timing
Table 39: Timing for the Slave Parallel Configuration Mode
-4 Speed Grade
Symbol
Description
Min
Max
Units
The time from the rising transition on the CCLK pin to a signal transition at the
BUSY pin
-
12.0
ns
TSMDCC
The time from the setup of data at the D0-D7 pins to the active edge the CCLK
pin
11.0
-
ns
TSMCSCC
Setup time on the CSI_B pin before the active edge of the CCLK pin
10.0
-
ns
TSMCCW(2)
Setup time on the RDWR_B pin before active edge of the CCLK pin
23.0
-
ns
TSMCCD
The time from the active edge of the CCLK pin to the point when data is last
held at the D0-D7 pins
1.0
-
ns
TSMCCCS
The time from the active edge of the CCLK pin to the point when a logic level
is last held at the CSO_B pin
0
-
ns
TSMWCC
The time from the active edge of the CCLK pin to the point when a logic level
is last held at the RDWR_B pin
0
-
ns
TCCH
The High pulse width at the CCLK input pin
5
-
ns
TCCL
The Low pulse width at the CCLK input pin
5
-
ns
FCCPAR
Frequency of the clock
signal at the CCLK input
pin
Not using the BUSY pin(2)
0
50
MHz
Using the BUSY pin
0
66
MHz
0
20
MHz
Clock-to-Output Times
TSMCKBY
Setup Times
Hold Times
Clock Timing
No bitstream
compression
With bitstream compression
Notes:
1.
2.
3.
The numbers in this table are based on the operating conditions set forth in Table 6.
In the Slave Parallel mode, it is necessary to use the BUSY pin when the CCLK frequency exceeds this maximum specification.
Some Xilinx documents refer to Parallel modes as “SelectMAP” modes.
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Serial Peripheral Interface Configuration Timing
Table 40: Timing for SPI Configuration Mode
Symbol
Description
Minimum
Maximum
Units
TCCLK1
Initial CCLK clock period
(see Table 34)
TCCLKn
CCLK clock period after FPGA loads ConfigRate setting
(see Table 34)
TMINIT
Setup time on VS[2:0] and M[2:0] mode pins before the rising
edge of INIT_B
50
-
ns
TINITM
Hold time on VS[2:0] and M[2:0]mode pins after the rising edge of
INIT_B
0
-
ns
TCCO
MOSI output valid after CCLK edge
See Table 38
TDCC
Setup time on DIN data input before CCLK edge
See Table 38
TCCD
Hold time on DIN data input after CCLK edge
See Table 38
Table 41: Configuration Timing Requirements for Attached SPI Serial Flash
Symbol
Description
TCCS
SPI serial Flash PROM chip-select time
TDSU
SPI serial Flash PROM data input setup time
TDH
SPI serial Flash PROM data input hold time
TV
SPI serial Flash PROM data clock-to-output time
fC or fR
Maximum SPI serial Flash PROM clock frequency (also depends
on specific read command used)
Requirement
Units
T CCS ≤ T MCCL1 – T CCO
ns
T DSU ≤ T MCCL1 – T CCO
T DH ≤ T MCCH1
T V ≤ T MCCLn – T DCC
1
f C ≥ ------------------------------T CCLKn ( min )
ns
ns
ns
MHz
Notes:
1.
2.
These requirements are for successful FPGA configuration in SPI mode, where the FPGA provides the CCLK frequency. The post
configuration timing can be different to support the specific needs of the application loaded into the FPGA and the resulting clock source.
Subtract additional printed circuit board routing delay as required by the application.
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Byte Peripheral Interface Configuration Timing
Table 42: Timing for BPI Configuration Mode
Symbol
Description
Minimum
Maximum
Units
TCCLK1
Initial CCLK clock period
(see Table 34)
TCCLKn
CCLK clock period after FPGA loads ConfigRate setting
(see Table 34)
TMINIT
Setup time on CSI_B, RDWR_B, and M[2:0] mode pins before the rising
edge of INIT_B
50
-
ns
TINITM
Hold time on CSI_B, RDWR_B, and M[2:0] mode pins after the rising
edge of INIT_B
0
-
ns
TINITADDR
Minimum period of initial A[23:0] address cycle;
LDC[2:0] and HDC are asserted and valid
BPI-UP:
(M[2:0]=<0:1:0>)
5
5
TCCLK1
cycles
BPI-DN:
(M[2:0]=<0:1:1>)
2
2
TCCO
Address A[23:0] outputs valid after CCLK falling edge
See Table 38
TDCC
Setup time on D[7:0] data inputs before CCLK rising edge
See Table 38
TCCD
Hold time on D[7:0] data inputs after CCLK rising edge
See Table 38
Table 43: Configuration Timing Requirements for Attached Parallel NOR Flash
Symbol
TCE
(tELQV)
TOE
(tGLQV)
TACC
(tAVQV)
TBYTE
(tFLQV,
tFHQV)
Description
Requirement
Units
Parallel NOR Flash PROM chip-select
time
T CE ≤ T INITADDR
ns
Parallel NOR Flash PROM
output-enable time
T OE ≤ T INITADDR
ns
T ACC ≤ 0.5T CCLKn ( min ) – T CCO – T DCC – PCB
ns
T BYTE ≤ T INITADDR
ns
Parallel NOR Flash PROM read access
time
For x8/x16 PROMs only: BYTE# to
output valid time(3)
Notes:
1.
2.
3.
These requirements are for successful FPGA configuration in BPI mode, where the FPGA provides the CCLK frequency. The post
configuration timing can be different to support the specific needs of the application loaded into the FPGA and the resulting clock source.
Subtract additional printed circuit board routing delay as required by the application.
The initial BYTE# timing can be extended using an external, appropriately sized pull-down resistor on the FPGA’s LDC2 pin. The resistor
value also depends on whether the FPGA’s HSWAP pin is High or Low.
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IEEE 1149.1/1553 JTAG Test Access Port Timing
Table 44: Timing for the JTAG Test Access Port
-4 Speed Grade
Symbol
Description
Min
Max
Units
The time from the falling transition on the TCK pin
to data appearing at the TDO pin
1.0
11.0
ns
TTDITCK
The time from the setup of data at the TDI pin to
the rising transition at the TCK pin
7.0
-
ns
TTMSTCK
The time from the setup of a logic level at the TMS
pin to the rising transition at the TCK pin
7.0
-
ns
TTCKTDI
The time from the rising transition at the TCK pin
to the point when data is last held at the TDI pin
0
-
ns
TTCKTMS
The time from the rising transition at the TCK pin
to the point when a logic level is last held at the
TMS pin
0
-
ns
TCCH
The High pulse width at the TCK pin
5
-
ns
TCCL
The Low pulse width at the TCK pin
5
-
ns
FTCK
Frequency of the TCK signal
-
25
MHz
Clock-to-Output Times
TTCKTDO
Setup Times
Hold Times
Clock Timing
Notes:
1.
The numbers in this table are based on the operating conditions set forth in Table 6.
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Revision History
The following table shows the revision history for this document.
Date
Version
Revision
08/31/07
1.0
Initial Xilinx release.
01/20/09
1.1
•
•
•
•
Updated "Key Feature Differences from Commercial XC Devices."
Updated TACC requirement in Table 43.
Updated description of TDCC and TCCD in Table 42.
Removed Table 45: MultiBoot Trigger Timing.
09/09/09
2.0
•
•
•
•
•
•
Added package sizes to Table 2, page 4.
Removed Genealogy Viewer Link from "Package Marking," page 5.
Updated data and notes for Table 6, page 8.
Updated test conditions for RPU and maximum value for CIN in Table 7, page 8.
Updated notes for Table 8, page 9.
Updated Max VCCO for LVTTL and LVCMOS33, removed PCIX data, updated VIL Max for
LVCMOS18, LVCMOS15, and LVCMOS12, updated VIH Min for LVCMOS12, and added
note 6 in Table 9, page 11.
Removed PCIX data, revised note 2, and added note 4 in Table 10, page 12.
Updated figure description of Figure 5, page 14.
Added note 4 to Table 13, page 14.
Removed PC166_3 and PCIX adjustment values from Table 17, page 17.
Deleted Table 18 (duplicate of Table 17, page 17). Subsequent tables renumbered.
Removed PCIX data Table 18, page 18.
Removed PCIX data and removed VREF values for DIFF_HSTL_I_18,
DIFF_HSTL_III_18, DIFF_SSTL18_I, and DIFF_SSTL2_I from Table 19, page 19.
Updated TDICK minimum setup time in Table 20, page 20.
Updated notes, references to notes, and revised the maximum clock-to-output times for
TMSCKP_P Table 24, page 22.
Added "Spread Spectrum," page 24.
Updated note 3 in Table 26, page 25.
Added note 4 Table 28, page 26.
Updated notes, references to notes, and CLKOUT_PER_JITT_FX data in Table 29,
page 27.
Updated MAX_STEPS data in Table 31, page 28.
Updated ConfigRate Setting for TCCLK1 to indicate 1 is the default value in Table 34,
page 30.
Updated ConfigRate Setting for FCCLK1 to indicate 1 is the default value in Table 35,
page 30.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Notice of Disclaimer
THE XILINX HARDWARE FPGA AND CPLD DEVICES REFERRED TO HEREIN (“PRODUCTS”) ARE SUBJECT TO THE TERMS AND
CONDITIONS OF THE XILINX LIMITED WARRANTY WHICH CAN BE VIEWED AT http://www.xilinx.com/warranty.htm. THIS LIMITED
WARRANTY DOES NOT EXTEND TO ANY USE OF PRODUCTS IN AN APPLICATION OR ENVIRONMENT THAT IS NOT WITHIN THE
SPECIFICATIONS STATED IN THE XILINX DATA SHEET. ALL SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
PRODUCTS ARE NOT DESIGNED OR INTENDED TO BE FAIL-SAFE OR FOR USE IN ANY APPLICATION REQUIRING FAIL-SAFE
PERFORMANCE, SUCH AS LIFE-SUPPORT OR SAFETY DEVICES OR SYSTEMS, OR ANY OTHER APPLICATION THAT INVOKES
THE POTENTIAL RISKS OF DEATH, PERSONAL INJURY, OR PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). USE OF PRODUCTS IN CRITICAL APPLICATIONS IS AT THE SOLE RISK OF CUSTOMER, SUBJECT TO
APPLICABLE LAWS AND REGULATIONS.
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Automotive Applications Disclaimer
XILINX PRODUCTS ARE NOT DESIGNED OR INTENDED TO BE FAIL-SAFE, OR FOR USE IN ANY APPLICATION REQUIRING
FAIL-SAFE PERFORMANCE, SUCH AS APPLICATIONS RELATED TO: (I) THE DEPLOYMENT OF AIRBAGS, (II) CONTROL OF A
VEHICLE, UNLESS THERE IS A FAIL-SAFE OR REDUNDANCY FEATURE (WHICH DOES NOT INCLUDE USE OF SOFTWARE IN
THE XILINX DEVICE TO IMPLEMENT THE REDUNDANCY) AND A WARNING SIGNAL UPON FAILURE TO THE OPERATOR, OR (III)
USES THAT COULD LEAD TO DEATH OR PERSONAL INJURY. CUSTOMER ASSUMES THE SOLE RISK AND LIABILITY OF ANY
USE OF XILINX PRODUCTS IN SUCH APPLICATIONS.
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