Specifications

4 Message Reference
54
4.3.12 MVD_MSG_CLOCK_PRI - Configure Clock Priority Request
Synopsis
Message sent to a DSI SPCI Board to configure the clock recovery priority order.
Format
MESSAGE HEADER
Field Name
Meaning
type
MVD_MSG_CLOCK_PRI (0x7e21)
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
1
liu0_pri
1
1
liu1_pri
2
1
liu2_pri
3
1
liu3_pri
4
1
liu4_pri
5
1
liu5_pri
6
1
liu6_pri
7
1
liu7_pri
Description
This message allows the user to specify a priority for each line interface. When
configured to recover clock from the line interfaces, this priority is used to decide
which line interface to use as the clock source. The highest priority in-sync line
interface is used, with the board automatically moving through the list of clock sources
as line interfaces lose synchronization or are deemed stable again. If no interfaces are
in sync, the board remains in "holdover" mode, based on the last valid clock that was
recovered.
The confirmation message (if requested) indicates success by status of zero.
Parameters
liun_pri
The relative priority for each LIU using the values taken from the following table: