add DVB-RSC2 codec

dshekhalev · Jan 19, 2023 · 4d9cb95 · 4d9cb95
1 parent 7cffde9
commit 4d9cb95
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Showing 27 changed files with 6,247 additions and 60 deletions.
diff --git a/do/do_rsc2.do b/do/do_rsc2.do
@@ -0,0 +1,26 @@
+onerror {resume}
+
+set incdir  ../include
+set rtldir  ../rtl
+set tbdir   ../testbench
+set workdir ../work
+#
+vlib $workdir
+#
+vlog -work $workdir -incr -sv +incdir+$incdir+$rtldir $rtldir/*.sv
+vlog -work $workdir -incr -sv +incdir+$incdir+$rtldir $rtldir/buffer/*.sv
+#
+vlog -work $workdir -incr -sv +incdir+$incdir+$rtldir/rsc $rtldir/rsc/*.sv
+vlog -work $workdir -incr -sv +incdir+$incdir+$rtldir/rsc/enc $rtldir/rsc/enc/*.sv
+vlog -work $workdir -incr -sv +incdir+$incdir+$rtldir/rsc/dec $rtldir/rsc/dec/*.sv
+#
+vlog -work $workdir -incr -sv +incdir+$incdir+$rtldir/rsc2 $rtldir/rsc2/*.sv
+vlog -work $workdir -incr -sv +incdir+$incdir+$rtldir/rsc2/enc $rtldir/rsc2/enc/*.sv
+vlog -work $workdir -incr -sv +incdir+$incdir+$rtldir/rsc2/dec $rtldir/rsc2/dec/*.sv
+
+vlog -work $workdir +initreg+0 -sv +incdir+$incdir+$tbdir/rsc $tbdir/rsc2/bertest.sv
+
+set seed [clock seconds]
+
+vsim -sv_seed $seed bertest -lib $workdir +nowarn+3015+3813+2241
+run -all
diff --git a/rtl/rsc/README.md b/rtl/rsc/README.md
@@ -12,8 +12,8 @@ vivado 2019.1 Artix 7 - 2
 
 Wimax OFDMA Nduobits = 1920(3840 bits), coderate = 2/3, 5bit metric, 10 iteration. Encoder use output buffer 
 
-Encoder 	: LUT/REG/RAMB	210/179/2.0	>200MHz (100Mbps -> 150Mbps) 
+Encoder 	: LUT/REG/RAMB	210/179/2.0	>200MHz (200Mbps -> 300Mbps) 
 
-Decoder simple	: LUT/REG/RAMB 	5.3k/4.7k/12.0 	~160MHz (12Mbps -> 8Mbps) 
+Decoder simple	: LUT/REG/RAMB 	5.3k/4.7k/12.0 	~160MHz (24Mbps -> 16Mbps) 
 
 Attention: This is only CTC codecs. There is no bits permutation or interleaving. The coder and decoder correspond each other but can have different bit order with standard codes. 
diff --git a/rtl/rsc/dec/rsc_dec.sv b/rtl/rsc/dec/rsc_dec.sv
@@ -240,7 +240,7 @@ module rsc_dec
 
   //
   // input buffer
-  logic [cIB_TAG_W-1 : 0] ibuffer__iwtag   ;
+  logic   [cIB_TAG_W-1 : 0] ibuffer__iwtag           ;
 
   logic                     ibuffer__irempty         ;
   logic     [cADDR_W-1 : 0] ibuffer__ifsaddr         ;

diff --git a/rtl/rsc/dec/rsc_dec_engine.sv b/rtl/rsc/dec/rsc_dec_engine.sv
@@ -467,63 +467,63 @@ module rsc_dec_engine
   // address generators
   //------------------------------------------------------------------------------------------------------
 
-   rsc_dec_addr_gen
-   #(
-     .pB_nF ( 0 )
-   )
-   faddr_gen
-   (
-     .iclk     ( iclk               ) ,
-     .ireset   ( ireset             ) ,
-     .iclkena  ( iclkena            ) ,
-     //
-     .ipmode   ( ctrl__oaddr_pmode  ) ,
-     .iclear   ( ctrl__oaddr_clear  ) ,
-     .ienable  ( ctrl__oaddr_enable ) ,
-     //
-     .iN       ( used_N             ) ,
-     .iNm1     ( used_Nm1           ) ,
-     .iP       ( used_P             ) ,
-     .iP0comp  ( used_P0comp        ) ,
-     .iPincr   ( used_Pincr         ) ,
-     .iPdvbinv ( used_Pdvbinv       ) ,
-     //
-     .osaddr   ( faddr_gen__osaddr  ) ,
-     .opaddr   ( faddr_gen__opaddr  ) ,
-     .obitinv  (  addr_gen__obitinv )
-   );
-
-   assign ofsaddr = faddr_gen__osaddr[pADDR_W-1 : 0];
-   assign ofpaddr = faddr_gen__opaddr[pADDR_W-1 : 0];
-
-   rsc_dec_addr_gen
-   #(
-     .pB_nF ( 1 )
-   )
-   baddr_gen
-   (
-     .iclk     ( iclk               ) ,
-     .ireset   ( ireset             ) ,
-     .iclkena  ( iclkena            ) ,
-     //
-     .ipmode   ( ctrl__oaddr_pmode  ) ,
-     .iclear   ( ctrl__oaddr_clear  ) ,
-     .ienable  ( ctrl__oaddr_enable ) ,
-     //
-     .iN       ( used_N             ) ,
-     .iNm1     ( used_Nm1           ) ,
-     .iP       ( used_P             ) ,
-     .iP0comp  ( used_P0comp        ) ,
-     .iPincr   ( used_Pincr         ) ,
-     .iPdvbinv ( used_Pdvbinv       ) ,
-     //
-     .osaddr   ( baddr_gen__osaddr  ) ,
-     .opaddr   ( baddr_gen__opaddr  ) ,
-     .obitinv  (  ) // n.u.
-   );
-
-   assign obsaddr = baddr_gen__osaddr[pADDR_W-1 : 0];
-   assign obpaddr = baddr_gen__opaddr[pADDR_W-1 : 0];
+  rsc_dec_addr_gen
+  #(
+    .pB_nF ( 0 )
+  )
+  faddr_gen
+  (
+    .iclk     ( iclk               ) ,
+    .ireset   ( ireset             ) ,
+    .iclkena  ( iclkena            ) ,
+    //
+    .ipmode   ( ctrl__oaddr_pmode  ) ,
+    .iclear   ( ctrl__oaddr_clear  ) ,
+    .ienable  ( ctrl__oaddr_enable ) ,
+    //
+    .iN       ( used_N             ) ,
+    .iNm1     ( used_Nm1           ) ,
+    .iP       ( used_P             ) ,
+    .iP0comp  ( used_P0comp        ) ,
+    .iPincr   ( used_Pincr         ) ,
+    .iPdvbinv ( used_Pdvbinv       ) ,
+    //
+    .osaddr   ( faddr_gen__osaddr  ) ,
+    .opaddr   ( faddr_gen__opaddr  ) ,
+    .obitinv  (  addr_gen__obitinv )
+  );
+
+  assign ofsaddr = faddr_gen__osaddr[pADDR_W-1 : 0];
+  assign ofpaddr = faddr_gen__opaddr[pADDR_W-1 : 0];
+
+  rsc_dec_addr_gen
+  #(
+    .pB_nF ( 1 )
+  )
+  baddr_gen
+  (
+    .iclk     ( iclk               ) ,
+    .ireset   ( ireset             ) ,
+    .iclkena  ( iclkena            ) ,
+    //
+    .ipmode   ( ctrl__oaddr_pmode  ) ,
+    .iclear   ( ctrl__oaddr_clear  ) ,
+    .ienable  ( ctrl__oaddr_enable ) ,
+    //
+    .iN       ( used_N             ) ,
+    .iNm1     ( used_Nm1           ) ,
+    .iP       ( used_P             ) ,
+    .iP0comp  ( used_P0comp        ) ,
+    .iPincr   ( used_Pincr         ) ,
+    .iPdvbinv ( used_Pdvbinv       ) ,
+    //
+    .osaddr   ( baddr_gen__osaddr  ) ,
+    .opaddr   ( baddr_gen__opaddr  ) ,
+    .obitinv  (  ) // n.u.
+  );
+
+  assign obsaddr = baddr_gen__osaddr[pADDR_W-1 : 0];
+  assign obpaddr = baddr_gen__opaddr[pADDR_W-1 : 0];
 
   //------------------------------------------------------------------------------------------------------
   // MAP engine

diff --git a/rtl/rsc/dec/rsc_dec_map_engine.sv b/rtl/rsc/dec/rsc_dec_map_engine.sv
@@ -140,11 +140,13 @@
   assign rsc_dec_map_engine__ifyLLR           = '0 ;
   assign rsc_dec_map_engine__ifwLLR           = '0 ;
   assign rsc_dec_map_engine__ifLextr          = '0 ;
+  assign rsc_dec_map_engine__ifsLLRtag        = '0 ;
   assign rsc_dec_map_engine__ibaddr           = '0 ;
   assign rsc_dec_map_engine__ibsLLR           = '0 ;
   assign rsc_dec_map_engine__ibyLLR           = '0 ;
   assign rsc_dec_map_engine__ibwLLR           = '0 ;
   assign rsc_dec_map_engine__ibLextr          = '0 ;
+  assign rsc_dec_map_engine__ibsLLRtag        = '0 ;
   assign rsc_dec_map_engine__if_rp_state_even = '0 ;
   assign rsc_dec_map_engine__if_rp_state_odd  = '0 ;
   assign rsc_dec_map_engine__ib_rp_state_even = '0 ;

diff --git a/rtl/rsc2/README.md b/rtl/rsc2/README.md
@@ -0,0 +1,19 @@
+Dynamic configuration DVB-RSC2 (ETSI EN 301 545-2 V1.2.1) duo-binary convolution turbo code with MAX-Log-MAP decoding.
+
+Supported modes: all modes defined in Table A-1/2/4/5
+
+Supports code rates: [1/3; 1/2; 2/3; 3/4; 4/5; 5/6; 6/7; 7/8]
+
+Encoder uses two pass coding with minimal delays. 
+
+Decoder uses special MAP engine with 1 duo-bits per tick processing and simultaneous forward/backard recursion. 
+
+vivado 2019.1 Artix 7 - 2 
+
+Wimax OFDMA Nduobits = 152(304 bits), coderate = 1/2, 5bit metric, 10 iteration. Encoder use output buffer 
+
+Encoder 	: LUT/REG/RAMB	330/255/2.0	>200MHz (245Mbps -> 490Mbps) 
+
+Decoder simple	: LUT/REG/RAMB 	9.5k/8k/10.0 	~160MHz (29Mbps -> 14.5Mbps) 
+
+Attention: This is only CTC codec. There is no bits permutation or interleaving. The coder and decoder correspond each other but can have different bit order with standard codes.