MT312 Contents
List of figures
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
System Block Diagram - SNIM5 ............................................................................................. 1
System Block Diagram - SNIM5 ............................................................................................. 2
MT312 Functional Block Diagram ........................................................................................... 3
Viterbi block diagram ............................................................................................................11
Viterbi error count measurement ...........................................................................................12
Viterbi error count coarse indication ......................................................................................12
DVB Conceptual diagram o f the conoluntional de-interleaver block .......................................13
DSS Conceptual diagram of the convolutional de-interleaver block ........................................13
DVB block structure ..............................................................................................................14
Figure 10 DSS block structure ..............................................................................................................14
Figure 11 DVB Energy dispersal conceptual diagram ............................................................................15
Figure 12 MT312 Control Structure .......................................................................................................16
Figure 13 Alternative System Block Diagram - SNIM6 ...........................................................................17
Figure 14 Initialisation sequence in DVB mode .....................................................................................20
Figure 15 Simple channel change sequence .........................................................................................24
Figure 16 Channel change sequence with new Symbol rate, DVB mode ................................................24
Figure 17 Channel change sequence with search mode, DVB mode .....................................................25
Figure 18 Results of Symbol rate and code ...........................................................................................25
Figure 19 A DiSEqC™ data byte interrupting a continuous 22kHz tone .................................................29
Figure 20 One DiSEqC™ data byte - 0x11 (hex) plus parity bit .............................................................29
Figure 21 DVB Transport Packet Header bytes ......................................................................................55
Figure 22 MT312 output data wave form diagram ..................................................................................56
Figure 23 MT312 output data wave form diagram 2 ...............................................................................57
Figure 24 MT312 output data wave form diagram 2 ...............................................................................58
Figure 25 One DiSEqC™ data byte - 0x11 (hex) plus parity bit .............................................................77
Figure 26 Crystal oscillator circuit .........................................................................................................79
Figure 27 Application Schematic ...........................................................................................................83
8
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
