ep1agx50d Altera Corporation, ep1agx50d Datasheet - Page 286

• Manufacturer Part Number: ep1agx50d
• Description: Arria Gx Device Data Sheet
• Manufacturer: Altera Corporation

PLL Timing Specifications
PLL Timing
Specifications
4–132
Arria GX Device Handbook, Volume 1
f
f
f
f
t
t
t
f
f
t
f
f
t
t
f
f
f
f
IN
INPFD
INDUTY
ENDUTY
INJITTER
OUTJITTER
FCOMP
OUT
SCANCLK
CONFIGEPLL
OUT_EXT
OUTDUTY
LOCK
DLOCK
SWITCHOVER
CLBW
VCO
SS
Table 4–116. 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
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
Scanclk frequency
Time required to reconfigure scan chains
for EPLLs
PLL external clock output frequency
Duty cycle for external clock output
Time required for the PLL to lock from the
time it is enabled or the end of device
configuration
Time required for the PLL to lock
dynamically after automatic clock
switchover between two identical clock
frequencies
Frequency range where the clock
switchover performs properly
PLL closed-loop bandwidth
PLL VCO operating range
Spread-spectrum modulation frequency
Tables 4–116
operating in both the commercial junction temperature range (0 to 85 C)
and the industrial junction temperature range (–40 to 100 C), except for
the clock switchover and phase-shift stepping features. These two
features are only supported from the 0 to 100 C junction temperature
range.
≤
0.85 MHz
Description
and
4–117
describe the Arria GX PLL specifications when
1.5
1.5
0.13
Min
300
100
1.5
40
40
45
2
2
(2)
(2)
174/f
SCANCLK
0.03
Typ
0.5
1.0
1.2
50
1
Altera Corporation
Max
16.9
500
420
550
100
500
840
500
(3)
(1)
60
60
10
55
1
1
ps or mUI
ns (peak-
ns (peak-
May 2008
to-peak)
to-peak)
MHz
MHz
(p-p)
MHz
MHz
MHz
MHz
MHz
MHz
Unit
kHz
ms
ms
ns
ns
%
%
%