EP1S20F780I6N Altera, EP1S20F780I6N Datasheet - Page 324

• Manufacturer Part Number: EP1S20F780I6N
• Description: IC STRATIX FPGA 20K LE 780-FBGA
• Manufacturer: Altera
• Series: Stratix®r

Specifications of EP1S20F780I6N

• Number Of Logic Elements/cells: 18460
• Number Of Labs/clbs: 1846
• Total Ram Bits: 1669248
• Number Of I /o: 586
• Voltage - Supply: 1.425 V ~ 1.575 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 780-FBGA
• Family Name: Stratix
• Number Of Logic Blocks/elements: 18460
• # I/os (max): 586
• Frequency (max): 450.05MHz
• Process Technology: 0.13um (CMOS)
• Operating Supply Voltage (typ): 1.5V
• Logic Cells: 18460
• Ram Bits: 1669248
• Operating Supply Voltage (min): 1.425V
• Operating Supply Voltage (max): 1.575V
• Operating Temp Range: -40C to 100C
• Operating Temperature Classification: Industrial
• 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

Enhanced PLLs
1–14
Stratix Device Handbook, Volume 2
Stratix and Stratix GX devices can drive any enhanced PLL driven
through the global clock or regional clock network to any general I/O pin
as an external output clock. The jitter on the output clock is not
guaranteed for these cases.
Clock Feedback
The following three feedback modes in Stratix and Stratix GX device
enhanced PLLs allow multiplication and/or phase shifting:
■
■
■
■
Table 1–7
Phase Shifting
Stratix and Stratix GX device enhanced PLLs provide advanced
programmable phase shifting. You set these parameters in the Quartus II
software.
No compensation mode
Normal Mode
Zero delay buffer mode
External feedback mode
Table 1–7. Clock Feedback Mode Availability
Clock Feedback Mode
Zero delay buffer: The external clock output pin is phase-aligned
with the clock input pin for zero delay. Altera recommends using the
same I/O standard on the input clock and the output clocks for
optimum performance.
External feedback: The external feedback input pin, FBIN, is phase-
aligned with the clock input, CLK, pin. Aligning these clocks allows
you to remove clock delay and skew between devices. This mode is
only possible for PLLs 5 and 6. PLLs 5 and 6 each support feedback
for one of the dedicated external outputs, either one single-ended or
one differential pair. In this mode, one encounter feeds back to the
PLL FBIN input, becoming part of the feedback loop.
Normal mode: If an internal clock is used in this mode, it is phase-
aligned to the input clock pin. The external clock output pin has a
phase delay relative to the clock input pin if connected in this mode.
No compensation: In this mode, the PLL does not compensate for
any clock networks or external clock outputs.
shows which modes are supported by which PLL type.
Enhanced PLLs
Yes
Yes
Yes
Yes
Mode Available in
Altera Corporation
Fast PLLs
Yes
Yes
No
No
July 2005