XC5VSX35T-1FF665I Xilinx Inc, XC5VSX35T-1FF665I Datasheet - Page 314
XC5VSX35T-1FF665I
Manufacturer Part Number
XC5VSX35T-1FF665I
Description
IC FPGA VIRTEX-5 35K 665FCBGA
Manufacturer
Xilinx Inc
Series
Virtex™-5 SXTr
Datasheets
1.XC5VLX30-1FFG324C.pdf
(91 pages)
2.XC5VLX30-1FFG324C.pdf
(13 pages)
3.XC5VLX30-1FFG324C.pdf
(385 pages)
Specifications of XC5VSX35T-1FF665I
Number Of Logic Elements/cells
34816
Number Of Labs/clbs
2720
Total Ram Bits
3096576
Number Of I /o
360
Voltage - Supply
0.95 V ~ 1.05 V
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 100°C
Package / Case
665-BBGA, FCBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Number Of Gates
-
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Chapter 6: SelectIO Resources
314
Weighted Average Calculation of SSO
This section describes the SSO calculation where the SSO contributions of all I/O in a bank
are combined into a single figure.
SSO of an individual bank is calculated by summing the SSO contributions of the
individual I/O standards in the bank. The SSO contribution is the percentage of full
utilization of any one I/O standard in any one bank. For drivers of each I/O standard, the
calculation follows:
For a bank with drivers of multiple I/O standards, the SSO calculation is:
A sample SSO calculation follows. The system parameters used are:
First, SSO limits for each I/O standard are obtained from
The SSO contribution of each I/O standard is calculated as:
Finally, the bank SSO is calculated:
Bank 1 SSO = SSO contribution (1) + SSO contribution (2) + SSO Contribution (3)
I/O Group
SSO Contribution (I/ O group n) = (quantity of drivers)/(Bank SSO limit)
Bank SSO
1
2
3
SSO Allowance
Device:
Bank:
I/O Standards, Quantities:
SSO Contribution
SSO Contribution (1)
SSO Contribution (2)
SSO Contribution (3)
= 30% + 20% + 48%
=
SSTL2_II
LVCMOS25_24 Fast
LVCMOS25_6 Fast
(
1 to n
∑
I/O Standard
)
SSO Contribution n ( )
www.xilinx.com
= SF1 × SF2 × SF3 × 100%
= 0.909 × 0.917 × 0.905 × 100%
= 75.4%
XC5VLX50 FF1153
11
SSTL2_II,
LVCMOS25_24 Fast,
LVCMOS25_6 Fast,
= (quantity of drivers)/(Bank SSO limit)
=
=
=
=
12/40
6/30
19/40
98%
SSO Limit (Drivers per Bank)
=
=
=
12
6
19
Table
30%
20%
48%
40
30
40
6-40:
Virtex-5 FPGA User Guide
UG190 (v5.3) May 17, 2010
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