XC5VLX50T-1FFG665C Xilinx Inc, XC5VLX50T-1FFG665C Datasheet - Page 167

• Manufacturer Part Number: XC5VLX50T-1FFG665C
• Description: FPGA, VIRTEX-5 LXT, 50K, 665FCBGA
• Manufacturer: Xilinx Inc
• Series: Virtex™-5 LXTr

Specifications of XC5VLX50T-1FFG665C

• No. Of Logic Blocks: 7200
• Family Type: Virtex-5
• No. Of Speed Grades: 1
• Total Ram Bits: 2211840
• No. Of I/o's: 360
• Clock Management: DCM, PLL
• I/o Supply Voltage: 3.3V
• Operating Frequency Max: 550MHz
• Number Of Logic Elements/cells: 46080
• Number Of Labs/clbs: 3600
• 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
• Core Supply Voltage Range: 1V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: HW-V5-ML561-UNI-G - EVALUATION PLATFORM VIRTEX-5HW-V5-ML550-UNI-G - EVALUATION PLATFORM VIRTEX-5HW-V5-ML521-UNI-G - EVALUATION PLATFORM VIRTEX-5HW-V5GBE-DK-UNI-G - KIT DEV V5 LXT GIGABIT ETHERNET122-1508 - EVALUATION PLATFORM VIRTEX-5
• Number Of Gates: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 122-1565

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
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The ECC decoder also corrects single-bit error in parity bits.
Using the ECC Decode-Only to Inject Double-Bit Error
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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.
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Built-in Error Correction
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