Dialogic DSI SPCI Network Interface Boards Specifikace stáhnout pdf (Strana 88)

4 Message Reference

4.3.11 MVD_MSG_CNFCLOCK - Configure Clock Request

Synopsis

Message sent to an SS7HD board to configure or reconfigure the clocking mode for the

board. It is not necessary to send this message for single board systems or systems

where the CT Bus is not used. In these cases, the options in the MGT_MSG_CONFIG0

message are sufficient.

Format

MESSAGE HEADER

Field Name

Meaning

type

MVD_MSG_CNFCLOCK (0x7e20)

src

Sending Module ID

dst

MVD_TASK_ID

rsp_req

used to request a confirmation

hclass

status

err_info

len

PARAMETER AREA

Offset

Size

Name

bus_speed

clk_mode

pll_clk_src

ref1_mode

ref2_mode

clk_term

Description

This message is used to control the on-board clock circuitry. It allows the user to select

the CT Bus clocking mode and the reference clock sources for the local and bus

reference clocks.

The confirmation message (if requested) indicates success with a status value of 0.

Parameters

The MVD_MSG_CNFCLOCK message includes the following parameters:

bus_speed

Set the CT Bus speed. The following table shows the permitted values and their

meanings.

1 2 ... 83 84 85 86 87 88 89 90 91 92 93 ... 124 125

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