User`s manual

AMBE-3000™-HDK Development Board
User’s Manual Version 1.1
Page 41
DVSI Confidential Proprietary
Operation
decoded by first AMBE-3000™-HDK Development Board. The HDK Board implements an
asynchronous RS-232 serial interface for channel data using a protocol designed by DVSI.
Figure 23 Full Duplex Mode
Full Duplex Communication Setup and Control
To set up a full duplex communication system between two HDK boards, each board must be
individually configured and then the connection (P2 to P2) between the two boards can be made. In
order for two boards (board “A” to connect to board “B”) one board (board ”A”) has to be programmed
with skew control ON and the other board (board “B”) with skew control OFF. Both boards “A” and “B”
must be set to the same vocoder rate.
To set up the first board “A” with skew ON run the following commands:
C:\ Command Prompt
-
’
X
hdkcom.exe –port COM4 460800 –r <rate index or rate words in hex> –mode
dualhdkskew
where:
-port COM4 is the PC’s COM port that the HDK communicates on as indicated by Windows
Device Manger
460800 is the baud rate of the PC connection
-r is the rate index of the bit rate the file is to be decoded at. See Table 23 Standard Rate Table
for AMBE-3000. To use rate words to set the rate – the format must be six words in hex separated
by a space as shown in the following example:
-r 0x0460 0x0986 0x0000 0x0000 0x0000 0x5660