Altera ALTPLL (Phase-Locked Loop) IP Core - Manual (Page 52)

Description Type Parameter
Specifies the high period count for the corresponding
L[1..0] counter. Values range from 1 to 512 . If omitted,
the default is
1
.
Integer
L[]_HIGH
Specifies the initial value for the corresponding
L[1..0]
counter. Values range from
1
to
512
. If omitted, the default
is 1 .
Integer
L[]_INITIAL
Specifies the low period count for the corresponding
L[1..0]
counter. Values range from
1
to
512
. If omitted,
the default is 1 .
Integer L[]_LOW
Specifies the mode for the corresponding L[1..0] counter.
Values are
BYPASS
,
ODD
or
EVEN
. If omitted, the default is
BYPASS
.
String L[]_MODE
Specifies the phase tap for the corresponding
L[1..0]
counter. Values range from 0 to 7 . If omitted, the default
is
0
.
Integer
L[]_PH
Specifies, in nanoseconds (ns), the time delay for the
corresponding
L[1..0] counter. Values range from 0 ns
to
3
ns. If omitted, the default is
0
.
String
L[]_TIME_DELAY
Specifies the number of half-clock cycles that the output
clocks must be locked before the
locked port goes high.
This parameter is required for simulation in third-party
simulators. Available for Stratix IV, Stratix III, Cyclone IV,
and Cyclone III devices only.
Integer
LOCK_HIGH
Specifies the number of half-clock cycles that the output
clocks must be out-of-lock before the
locked port goes
low. This parameter is required for simulation in third-
party simulators. Available for Stratix IV, Stratix III,
Cyclone IV, and Cyclone III devices only.
Integer LOCK_LOW
Specifies the value of the LOCK_WINDOW_UI setting. If
omitted, default is
0.05
.
String LOCK_WINDOW_UI
Specifies, in picofarads (pF), the value of the loop capacitor.
Values range from
5 to 20 pF. The Compiler cannot achieve
all values. If omitted, the default value is
10
.
String
LOOP_FILTER_C
Specifies, in kilo ohms (K Ohm), the value of the loop
resistor. Values range from
1 K to 20 K. The Compiler
cannot achieve all values.
String
LOOP_FILTER_R
Allows you to specify Altera-specific parameters in VHDL
Design Files (.vhd). The default is
UNUSED
.
String
LPM_HINT
Identifies the library of parameterized modules (LPM)
entity name in VHDL Design Files. String
LPM_TYPE
ALTPLL (Phase-Locked Loop) IP Core User Guide Altera Corporation
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ALTPLL Parameters 52
2014.08.18