CN8478 Datasheet, PDF (214/221 Pages) Conexant Systems, Inc – Multichannel Synchronous Communications Controller (MUSYCC)

8.0 Terms, Definitions, and Conventions
8.6 Definitions
CN8478/CN8474A/CN8472A/CN8471A
Multichannel Synchronous Communications Controller (MUSYCC™)
message
octet
pointer
subchannel
time slot
word
In the context of an HDLC protocol, a data message consists of a header field, an
address field, a control field, a payload field, and an FCS field delimited by an
opening and a closing flag—7Eh (01111110h). This term is synonymous with
frame and packet.
A field made up of 8 binary bits. Synonymous with byte.
A 32-bit field containing the address of another bit field, descriptor, dword, word,
or byte.
When a 64 kbps time slot (or channel) consists of lower rate bit streams (in
multiples of 8 kbps), each bit stream is said to be a subchannel of the original
channel.
An 8-bit portion of a channelized T1 or E1 frame which repeats every 125 µs and
represents a 64 kbps signal. In channelized T1 and E1 frames, 24 and 32 time
slots operate at 64 kbps.
A field made up of 16 binary bits or 2 bytes concatenated.
8-8
Conexant
100660E