EP1S60F1020C7 Altera, EP1S60F1020C7 Datasheet - Page 104
EP1S60F1020C7
Manufacturer Part Number
EP1S60F1020C7
Description
IC STRATIX FPGA 60K LE 1020-FBGA
Manufacturer
Altera
Series
Stratix®r
Datasheet
1.EP1S10F780C7.pdf
(276 pages)
Specifications of EP1S60F1020C7
Number Of Logic Elements/cells
57120
Number Of Labs/clbs
5712
Total Ram Bits
5215104
Number Of I /o
773
Voltage - Supply
1.425 V ~ 1.575 V
Mounting Type
Surface Mount
Operating Temperature
0°C ~ 85°C
Package / Case
1020-FBGA
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Number Of Gates
-
Other names
544-1434
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PLLs & Clock Networks
2–90
Stratix Device Handbook, Volume 1
f
During switchover, the PLL VCO continues to run and will either slow
down or speed up, generating frequency drift on the PLL outputs. The
clock switchover transitions without any glitches. After the switch, there
is a finite resynchronization period to lock onto new clock as the VCO
ramps up. The exact amount of time it takes for the PLL to relock relates
to the PLL configuration and may be adjusted by using the
programmable bandwidth feature of the PLL. The specification for the
maximum time to relock is 100 µs.
For more information on clock switchover, see AN 313, Implementing
Clock Switchover in Stratix & Stratix GX Devices.
PLL Reconfiguration
The PLL reconfiguration feature enables system logic to change Stratix
device enhanced PLL counters and delay elements without reloading a
Programmer Object File (.pof). This provides considerable flexibility for
frequency synthesis, allowing real-time PLL frequency and output clock
delay variation. You can sweep the PLL output frequencies and clock
delay in prototype environments. The PLL reconfiguration feature can
also dynamically or intelligently control system clock speeds or t
delays in end systems.
Clock delay elements at each PLL output port implement variable delay.
Figure 2–54
for the counters and the clock delay elements. The configuration time is
less than 20 μs for the enhanced PLL using a input shift clock rate of
22 MHz. The charge pump, loop filter components, and phase shifting
using VCO phase taps cannot be dynamically adjusted.
shows a diagram of the overall dynamic PLL control feature
Altera Corporation
July 2005
CO
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