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| DVB-S2 Tx block diagram |
This is the top module for the DVB-S2 transmitter, which instantiates the subcomponents needed by the standard. Note that the config is fully dynamic so at any given moment there might frames with potentially different configs moving inside the DVB-S2 Tx.
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| AXI LDPC Encoder block diagram |
Data frame is fed to the frame data (s_tdata) and DVB parameters should be
synchronized with it.
Values from the DVB tables (Annexes B and C from ETSI EN 302 307-1 V1.4.1), are
expanded to per bit and fed to the s_ldpc interface. This interface need 2
values: the actual frame offsets (s_ldpc_offset) and when to process another
frame bit (s_ldpc_next).
When s_ldpc_tlast is received, accumulation is considered completed and the
final accumulation begins, in which point the component will not accept any data
until the output frame is fully written.