XC5VSX35T-1FFG665CES Xilinx Inc, XC5VSX35T-1FFG665CES Datasheet - Page 167
![IC FPGA VIRTEX-5 ES 35K 665FCBGA](/photos/6/73/67306/xilinx-_1136-fbga_sml.jpg)
XC5VSX35T-1FFG665CES
Manufacturer Part Number
XC5VSX35T-1FFG665CES
Description
IC FPGA VIRTEX-5 ES 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-1FFG665CES
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
0°C ~ 85°C
Package / Case
665-BBGA, FCBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of Gates
-
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Virtex-5 FPGA User Guide
UG190 (v5.3) May 17, 2010
ECC Decode-Only
Similarly, at time T2W and T3W, DI[63:0] = B and C, together with their corresponding
parity bits PB (hex) and PC (hex) are written into memory locations b and c. PB and PC
appear at output ECCPARITY[7:0] shortly after T2W and T3W.
ECC Encode-Only Read
ECC encode-only read is identical to normal block RAM read. 64-bit data appears at
DO[63:0] and 8-bit parity appears at DOP[7:0]. Single-bit error correction does not happen,
and the error flags SBITERR and DBITERR is never asserted.
Set by Attributes
EN_ECC_READ = TRUE
EN_ECC_WRITE = FALSE
In ECC decode-only, only the ECC decoder is enabled. The ECC encoder is disabled.
Decode-only mode is used to inject single-bit or double-bit errors to test the functionality
of the ECC decoder. The ECC parity bits must be externally supplied using the DIP[7:0]
pins.
Using ECC Decode-Only to Inject Single-Bit Error
•
•
•
•
•
The ECC decoder also corrects single-bit error in parity bits.
Using the ECC Decode-Only to Inject Double-Bit Error
•
•
•
•
•
The ECC decoder also detects when double-bit error in parity bits occurs, and when a
single-bit error in the data bits and a single-bit error in the corresponding parity bits
occurs.
At time T1W, T2W, T3W, DI[63:0] = A, B, C with single-bit error and DIP[7:0] = PA
(hex), PB (hex), PC (hex), the corresponding ECC parity bits for A, B, and C are
written into memory locations a, b, and c.
At time T1R, T2R, T3R, the contents of address a, b, and c are read out and corrected as
needed.
Latch mode: DO[63:0] = A, B, C, DOP[7:0] = PA, PB, PC shortly after T1R, T2R, T3R.
Register mode: DO[63:0] = A, B, C, DOP[7:0] = PA, PB, PC shortly after T2R, T3R, T4R.
SBITERR lines up with the corresponding DO/DOP data.
At time T1W, T2W, T3W, DI[63:0] = A, B, C with double-bit error and DIP[7:0] = PA
(hex), PB (hex), PB (hex), the corresponding ECC parity bits for A, B, and C are written
into memory location a, b, and c.
At time T1R, T2R, T3R, the original contents of address a, b, and c are read out and a
double-bit error is detected.
Latch mode: DO[63:0] = A, B, C with double-bit error, DOP[7:0] = PA, PB, PC shortly
after T1R, T2R, T3R.
Register mode: DO[63:0] = A, B, C with double-bit error, DOP[7:0] = PA, PB, PC
shortly after T2R, T3R, T4R.
DBITERR lines up with the corresponding DO/DOP data.
www.xilinx.com
Built-in Error Correction
167
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