Specifications

Net-2000™ VCU Users Manual
Version 4.0, December, 2013
Interface Protocol
6.3.2.3 Channel Data Packet Format
Channel Packet (220 bytes)
16 bit Word
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bytes
Byte (n) Byte (n+1)
Parameter Name
0 - 1 0 0 0 0 0 0 0 0 1 1 0 1 1 0 1 0 len
2 - 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 type
Header
4 - 5 x x x x x x x x x x x x x x x x seq
6 - 7 x x x x x x x x x x x x x x x x rate [0]
8 - 9 x x x x x x x x x x x x x x x x rate [1]
10 - 11 x x x x x x x x x x x x x x x x rate [2]
12 - 13 x x x x x x x x x x x x x x x x rate [3]
14 - 15 x x x x x x x x x x x x x x x x rate [4]
16 - 17 x x x x x x x x 1 1 0 0 x x x x rate [5]
18 - 19 x x 0 0 0 x 0 0 0 0 0 0 x x x 0 cmode
20 - 21 0 0 0 0 0 0 0 0 x x x x x x x x tone.idx
22 - 23 x x x x x x x x x x x x x x x x tone.amp
24 - 25 0 0 0 0 0 0 0 0 1 0 x x x x x x ws
26 - 27 0 0 0 0 x x x x 0 0 0 x 0 0 x x format
28 - 29 x x x x x x x x x x x x x x x x channel [0-1]
30 - 31 x x x x x x x x x x x x x x x x channel [2-3]
32 - 33 x x x x x x x x x x x x x x x x channel [4-5]
… … … …
218 - 219 x x x x x x x x x x x x x x x x channel [190-191]
Table 12 Channel Data Packet
Channel Data Packets are always 220 bytes and have the following format described in Table 12 and C-language
data structure
below:
struct channel_packet_t {
short len;
short type;
short seq;
short rate[6];
short cmode;
short tone[2];
short ws;
short format;
char channel[192];
};
Note that each bit of channel data occupies one byte of the channel[] buffer in the packet.
The remaining bytes in the channel[] buffer are ignored. The elements of the Decode
packet are described in detail in the following sections.
(Subject to Change) Page 39
DVSI CONFIDENTIAL PROPRIETARY