Altera ALTPLL (Phase-Locked Loop) IP Core Manuel d'utilisateur télécharger pdf (Page 49)

DescriptionTypeParameter

Specifies the output clock port which should be

compensated for.

• If the OPERATION_MODE parameter is set to normal

mode, the values are CLK[], GCLK[], LCLK[] , or

LVDSCLK[]. Default is CLK0.

• If the OPERATION_MODE parameter is set to zero-delay

buffer mode, value is EXTCLK[]. Default is EXTCLK0.

• If the OPERATION_MODE parameter is set to source-

synchronous mode, the values are CLK[], LCLK[],

GCLK[], or LVDSCLK[]. This clock cannot be offset with

respect to the reference clock. This relationship is

preserved closely even upon temperature and frequency

changes.

StringCOMPENSATE_CLOCK

Specifies the down spectrum percentage. Values range from

0 through 0.5.

StringDOWN_SPREAD

Specifies the high period count for the corresponding

E[3..0] counter. Values range from 1 through 512. If

omitted, the default is 1.

IntegerE[]_HIGH

Specifies the initial value for the corresponding E[3..0]

counter. Values range from 1 through 512. If omitted, the

default is 1.

IntegerE[]_INITIAL

Specifies the low period count for the corresponding

E[3..0] counter. Values range from 1 through 512. If

omitted, the default is 1.

IntegerE[]_LOW

Specifies the mode for the corresponding E[3..0] counter.

Values are BYPASS, ODD, or EVEN. If omitted, the default is

BYPASS.

StringE[]_MODE

Specifies the phase tap for the corresponding E[3..0]

counter. Values range from 0 through 7. If omitted, the

default is 0.

IntegerE[]_PH

Specifies, in nanoseconds (ns), the time delay for the

corresponding E[3..0] counter. Values range from 0 ns

to 3 ns. If omitted, the default is 0.

StringE[]_TIME_DELAY

Specifies the counter for the corresponding ENABLE[1..0]

port. Values are L0 or L1.

StringENABLE[]_COUNTER

Specifies whether to use the switchover counter. Values

are ON or OFF. If omitted, the value is OFF.

StringENABLE_SWITCH_OVER_COUNTER

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ALTPLL (Phase-Locked Loop) IP Core User Guide

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ALTPLL Parameters

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2014.08.18

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Altera ALTPLL (Phase-Locked Loop) IP Core Manuel d'utilisateur Page 49

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