Altera ALTPLL (Phase-Locked Loop) IP Core User Manual
Page 48
Description
Type
Parameter
Specifies the integer multiplication factor for the VCO
frequency for the corresponding output clock port,
CLK[9..0]
. The parameter value must be greater than
0
.
Specify this parameter only if the corresponding
CLK[9..0
]
port is used; however, it is not required if a Clock Settings
assignment is specified for the corresponding
CLK[9..0]
port. If omitted, the default is
0
. Parameters
CLK[9..5]_
MULTIPLY_BY
are not available in Cyclone III devices.
Integer
CLK[]_MULTIPLY_BY
Specifies the output frequency of the corresponding output
clock port,
CLK[9..0]
.This parameter is ignored if the
corresponding
CLK[9..0]
port is not used. This parameter
is unavailable if multiplication or division factors are
specified. If omitted, the default is
0
.
Integer
CLK[]_OUTPUT_FREQUENCY
Specifies the phase shift for the corresponding output clock
port,
CLK[9..0]
, in picoseconds (ps). If omitted, the default
is
0
. Parameters
CLK[9..5]_PHASE_SHIFT
are not available
in Cyclone III devices.
String
CLK[]_PHASE_SHIFT
Specifies, in picoseconds (ps), the delay value to be applied
to the corresponding output clock port,
CLK[9..0]
. This
parameter affects only the corresponding
CLK[9..0]
port
and is independent of the corresponding
CLK[9..0]_
PHASE_SHIFT
parameter; therefore, both parameters can
be used simultaneously. If no units are specified, default
is picoseconds (ps). Legal time delay values range from -3
ns to 6 ns in increments of 0.25 ns. These values should
not be used as parameters except when reprogramming
the PLL using the real-time programming interface.
String
CLK[]_TIME_DELAY
Specifies whether the clock output needs to be forced to
use even counter mode for the corresponding
CLK[9..0]
port. Values are
ON
or
OFF
. If omitted, the default is
OFF
.
String
CLK[]_USE_EVEN_COUNTER_MODE
Specifies whether the clock output needs to be forced to
use even counter values for the corresponding
CLK[9..0]
port. Values are
ON
or
OFF
. If omitted, the default is
OFF
.
String
CLK[]_USE_EVEN_ COUNTER_VALUE
ALTPLL (Phase-Locked Loop) IP Core User Guide
Altera Corporation
ug-altpll
ALTPLL Parameters
48
2014.08.18