CDA CD 60 Especificações descarregar pdf (Página 60)

PCI CD and PCI CDa

Document Number: 008-00965-06 EDT Public Revision: I December 2004

Template: edt.dot

Page 60

edt_set_out_clk_ics307

Description

Sets the frequency output on the PCI CDa board, using parameters computed by

edt_find_vco_frequency_ics307. The clock_channel command selects the

clock channel to which this should be applied. The CDa has only one clock channel; therefore,

the channel ID should always be set to 0.

Syntax

#include “edtinc.h”

#include “edt_ss_vco.h”

void edt_set_out_clk_ics307(EdtDev *edt_p, edt_pll *clk_data,

int clock_channel);

Arguments

edt_p

Device handle returned from

edt_open.

clk_data The

edt_pll structure filled in by

edt_find_vco_frequency_ics307 or

edt_find_vco_frequency_ics307_nodivide.

clock_channel

Channel ID (0)

edt_set_frequency_ics307

Description

This is a convenience function that first calls edt_find_vco_frequency_ics307 to

compute the parameters for the ICS307 PLL chip, then calls edt_set_out_clk_ics307

to set the frequency on the desired channel. If the target frequency is greater than 100 MHz,

edt_find_vco_frequency_ics307_nodivide is used instead of

edt_find_vco_frequency_ics307. The CDa has only one clock channel; therefore,

the channel ID should always be set to 0.

Syntax

#include “edtinc.h”

#include “edt_ss_vco.h”

double edt_set_frequency_ics307(EdtDev *edt_p, double ref_xtal,

double target, int clock_channel)

Arguments

edt_p

Device handle returned from

edt_open.

target

The desired output frequency in Hz.

xtal

The base frequency of the PCI CDa board. Default is 10.3681 MHz

clock_channel

Channel ID (0)

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