Altera ALTPLL (Phase-Locked Loop) IP Core Manual do Utilizador descarregar pdf (Página 53)

DescriptionTypeParameter

Specifies the modulus for the M counter. Provides direct

access to the internal PLL parameters. If the M parameter

is specified, all advanced parameters must be used. Values

range from 1 to 512. If omitted, the default is 0.

IntegerM

Specifies the initial value for the M counter. Provides direct

access to the internal PLL parameters. If the M_INITIAL

parameter is specified, all advanced parameters must be

used. Values range from 0 to 512. If omitted, the default

is 0.

IntegerM_INITIAL

Specifies the phase tap for the M counter. Values range

from 0 to 7. If omitted, the default is 0.

IntegerM_PH

Specifies the test source for the M counter. If omitted,

default is 5.

IntegerM_TEST_SOURCE

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

counter. Values range from 0 ns through 3 ns. If omitted,

the default is 0. This parameter is not available for Cyclone

II and Stratix II devices.

IntegerM_TIME_DELAY

Specifies the spread spectrum modulus for the M counter.

Provides direct access to the internal PLL parameters. If

the M2 parameter is specified, all advanced parameters must

be used. Values range from 1 to 512. If omitted, the value

is 1.

IntegerM2

Specifies the modulus for the N counter. Provides direct

access to the internal PLL parameters. If the N parameter

is specified, all advanced parameters must be used. Values

range from 1 to 512. If omitted, the default is 1.

IntegerN

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

counter. Values range from 0 ns through 3 ns. If omitted,

the default is 0. This parameter is not available for

Cyclone II and Stratix II devices.

IntegerN_TIME_DELAY

Specifies the spread spectrum modulus for the N counter.

Provides direct access to the internal PLL parameters. If

the N2 parameter is specified, all advanced parameters must

be used. Values range from 1 through 512. If omitted, the

default is 1.

IntegerN2

Altera Corporation

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 Manual do Utilizador Página 53

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