EP2SGX30DF780C5N Altera, EP2SGX30DF780C5N Datasheet - Page 289

• Manufacturer Part Number: EP2SGX30DF780C5N
• Description: IC STRATIX II GX 30K 780-FBGA
• Manufacturer: Altera
• Series: Stratix® II GXr

Specifications of EP2SGX30DF780C5N

• Number Of Logic Elements/cells: 33880
• Number Of Labs/clbs: 1694
• Total Ram Bits: 1369728
• Number Of I /o: 361
• Voltage - Supply: 1.15 V ~ 1.25 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 780-FBGA
• Family Name: Stratix II GX
• Number Of Logic Blocks/elements: 33880
• # I/os (max): 361
• Frequency (max): 609.76MHz
• Process Technology: SRAM
• Operating Supply Voltage (typ): 1.2V
• Logic Cells: 33880
• Ram Bits: 1369728
• Operating Supply Voltage (min): 1.15V
• Operating Supply Voltage (max): 1.25V
• Operating Temp Range: 0C to 85C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 780
• Package Type: FC-FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -
• Lead Free Status / Rohs Status: Compliant
• Other names: 544-1754

Figure 4–12. DCD Measurement Technique for Non-DDIO (Single-Data Rate) Outputs
Figure 4–13. DCD Measurement Technique for DDIO (Double-Data Rate) Outputs
However, when the output is a double data rate input/output (DDIO)
signal, both edges of the input clock signal (positive and negative) trigger
output transitions
clock and the input clock buffer affect the output DCD.
When an FPGA PLL generates the internal clock, the PLL output clocks
the IOE block. As the PLL only monitors the positive edge of the reference
clock input and internally re-creates the output clock signal, any DCD
present on the reference clock is filtered out. Therefore, the DCD for a
DDIO output with PLL in the clock path is better than the DCD for a
DDIO output without PLL in the clock path.
(Figure
4–13). Therefore, any distortion on the input