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Unformatted text preview: The Master Channel Demultiplexing Function shall examine the MCID in the
incoming stream of Transfer Frames and shall route them to the instances of the Master
Channel Reception Function and, if present, to the Master Channel Frame Service users.
1 If a gap in the Master Channel Frame Count is detected, a Loss Flag is optionally
delivered to the users. 2 Transfer Frames with an invalid MCID are discarded. 184.108.40.206 An abstract model of the Master Channel Demultiplexing Function is illustrated in
figure 4-17. CCSDS 132.0-B-1 Page 4-26 September 2003 CCSDS RECOMMENDATION FOR TM SPACE DATA LINK PROTOCOL MC Reception
Function MC Frame
Service User MC Frames Master Channel
Function for a
Channel MC Frames Demultiplexing All Frames
All Frames Reception Function Figure 4-17: Abstract Model of Master Channel Demultiplexing Function
4.3.7 ALL FRAMES RECEPTION FUNCTION
220.127.116.11 The All Frames Reception Function shall be used to perform error control decoding
defined by this Recommendation.
NOTE – There is an instance of the All Frames Reception Function for each Physical
18.104.22.168 If the Frame Error Control Field is present in the Transfer Frame, the All Frames
Reception Function shall recompute the CRC value for the Transfer Frame and compare it to
the content of the Frame Error Control Field to determine if the Transfer Frame contains a
NOTE – A Transfer Frame which contains a detected error is not required to be delivered
in cross support situations.
22.214.171.124 An abstract model of the All Frames Reception Function is illustrated in figure 4-18. CCSDS 132.0-B-1 Page 4-27 September 2003 CCSDS RECOMMENDATION FOR TM SPACE DATA LINK PROTOCOL MC Demux.
All Frames All Frames
Channel Error Control Decoding All Frames
Coding Sublayer Figure 4-18: Abstract Model of All Frames Reception Function CCSDS 132.0-B-1 Page 4-28 September 2003 CCSDS RECOMMENDATION FOR TM SPACE DATA LINK PROTOCOL 5 MANAGED PARAMETERS NOTE...
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This document was uploaded on 03/06/2014.
- Spring '14