參數(shù)資料
型號: EP1S30B1508C5ES
廠商: Altera Corporation
英文描述: Stratix Device Family Data Sheet
中文描述: Stratix系列器件數(shù)據(jù)手冊
文件頁數(shù): 116/290頁
文件大?。?/td> 3559K
代理商: EP1S30B1508C5ES
2–92
Stratix Device Handbook, Volume 1
Altera Corporation
July 2005
PLLs & Clock Networks
bandwidth is tuned by varying the charge pump current, loop filter
resistor value, high frequency capacitor value, and
m
counter value. You
can manually adjust these values if desired. Bandwidth is programmable
from 200 kHz to 1.5 MHz.
External Clock Outputs
Enhanced PLLs 5 and 6 each support up to eight single-ended clock
outputs (or four differential pairs). Differential SSTL and HSTL outputs
are implemented using 2 single-ended output buffers which are
programmed to have opposite polarity. In Quartus II software, simply
assign the appropriate differential I/O standard and the software will
implement the inversion. See
Figure 2–55
.
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