6 Message Reference

6.3.11 Configure Clock Request

Synopsis:

Message sent to a DSI SPCI Board to configure the clocking mode for the board.

Message Format:

 

 

MESSAGE HEADER

Field Name

 

Meaning

 

 

 

type

 

MVD_MSG_CNFCLOCK (0x7e20)

 

 

 

id

 

0

 

 

 

src

 

Sending Module ID

 

 

 

dst

 

MVD_TASK_ID

 

 

 

rsp_req

 

used to request a confirmation

 

 

 

hclass

 

0

 

 

 

status

 

Status Response (if confirmation requested)

 

 

 

err_info

 

0

 

 

 

len

 

8

 

 

 

 

 

PARAMETER AREA

Offset

Size

Name

 

 

 

0

2

bus_speed

 

 

 

2

2

clk_mode

 

 

 

4

2

pll_clk_src

 

 

 

6

2

ref1_mode

 

 

 

8

2

Reserved. Set to zero

 

 

 

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 by status of zero.

Parameter Description:

bus_speed

This parameter is used to set the CT bus speed; the permissible values are as follows:

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Dialogic DSI SPCI Network Interface Boards manual Configure Clock Request, Parameter Description Busspeed

DSI SPCI Network Interface Boards specifications

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