EP2S15 ALTERA [Altera Corporation], EP2S15 Datasheet - Page 227

• Manufacturer Part Number: EP2S15
• Description: Stratix II Device Family
• Manufacturer: ALTERA [Altera Corporation]

PLL Timing
Specifications
Altera Corporation
May 2007
f
f
f
f
t
t
t
f
t
f
t
f
I N
I N P F D
I N D U T Y
E I N D U T Y
I N J I T T E R
O U T J I T T E R
F C O M P
O U T
O U T D U T Y
S C A N C L K
C O N F I G P L L
O U T _ E X T
Table 5–92. Enhanced PLL Specifications (Part 1 of 2)
Name
Input clock frequency
Input frequency to the
PFD
Input clock duty cycle
External feedback
input clock duty cycle
Input or external
feedback clock input
jitter tolerance in
terms of period jitter.
Bandwidth ≤ 0.85 MHz
Input or external
feedback clock input
jitter tolerance in
terms of period jitter.
Bandwidth >
0.85 MHz
Dedicated clock
output period jitter
External feedback
compensation time
Output frequency for
internal global or
regional clock
Duty cycle for external
clock output (when set
to 50%).
Scanclk frequency
Time required to
reconfigure scan
chains for enhanced
PLLs
PLL external clock
output frequency
Description
Tables 5–92
operating in both the commercial junction temperature range (0 to 85 °C)
and the industrial junction temperature range (–40 to 100 °C).
and
Min
1.5
1.5
(2)
(2)
40
40
45
2
2
5–93
174/f
describe the Stratix II PLL specifications when
S C A N C L K
Typ
0.5
1.0
50
250 ps for ≥ 100 MHz
25 mUI for < 100 MHz
Stratix II Device Handbook, Volume 1
DC & Switching Characteristics
550.0
550.0
Max
500
420
100
60
60
10
55
(1)
outclk
outclk
ps or mUI
ns (p-p)
ns (p-p)
(p-p)
MHz
MHz
MHz
MHz
MHz
Unit
ns
ns
%
%
%
5–91