Specifications

Net-2000™ VCU Users Manual
Version 4.0, December, 2013
Interface Protocol
6.3.4 Reset Packet
The Reset packet is used to reset the encoder and decoder state when the VCU is in File Mode. In order to get
reproducible, bit-exact results in File Mode the state of the vocoder must be reset before sending Channel or Voice
packets to the VCU.
Reset Packet
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 0 0 0 0 1 0 0 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 x x which
Table 39 Reset Packet
Reset packets have the following format described Table 39 Reset Packetand C-language data structure below:
struct reset_pa
cket_t {
short len;
short type;
short seq;
short which;
};
The size of the Reset packet is eight bytes. The elements of the Reset packet are described in detail in the following
sections.
6.3.4.1 Reset Packet Bytes 0 & 1 (len)
The len parameter (bytes 0 and 1) hold the 16-bit length of the packet (Table 3). The packet length is eight bytes.
len = Length (in bytes) of total packet (including header)
16 bit Word
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Byte 0 Byte 1 Decimal Value
Reset Packet Size 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 8 bytes
Table 40 len Header Parameter
(Subject to Change) Page 54
DVSI CONFIDENTIAL PROPRIETARY