Specifications

4 Message Reference
46
Note: This message provides an alternative approach for controlling switching through the CT bus
switch allowing connections to the CT bus to be utilized only as required (rather than being
set up at initialization time).
Format
MESSAGE HEADER
Field Name
Meaning
type
MVD_MSG_SC_CONNECT (0x7e1f)
id
0
src
Sending Module ID
dst
MVD_TASK_ID (0x10)
rsp_req
used to request a confirmation
hclass
0
status
Status Response (if confirmation requested)
err_info
0
len
16
PARAMETER AREA
Offset
Size
Name
0
2
local_stream
2
2
local_slot
4
2
mode
6
2
source_stream
8
2
source_slot
10
2
dest_stream
12
2
dest_slot
14
2
pattern
Description
This message is sent to the DSI SPCI Board to control the CT bus switch. Several
different actions can be performed depending on the value of the mode parameter,
these are CT bus to local bus connection, local bus to CT bus connection, duplex
connection between CT bus, and local bus and duplex connection between local bus
timeslots.
The confirmation message (if requested) indicates success by status of zero.
Parameters
The following table depicts which parameters are required for each of the seven
different modes. (* = parameter is required)
Mode
Required Parameters
local st
local ts
source st
source ts
dest st
dest ts
pattern
1
*
*
*
*
2
*
*
*
*
3
*
*
*
*
*
*
4
*
*
5
*
*