continiuing co-simulation with 353 code, verified martching data to the compressor input (de641880) · Commits · Elphel / x393

compressor_jp/cmprs_cmd_decode.v

+8 −4

Original line number	Diff line number	Diff line
		@@ -153,6 +153,8 @@ module cmprs_cmd_decode#(
		// cr_w, // data written to cr (1 cycle long) - just to reset legacy IRQ
		// ntiles,//[17:0] - number of tiles in a frame to process
		input frame_start, // @mclk
		output frame_start_xclk, // frame start, parameters are copied at this pulse

		// outputs sync @ posedge mclk:
		output cmprs_en_mclk, // @mclk 0 resets immediately
		input cmprs_en_extend, // @mclk keep compressor enabled for graceful shutdown
		@@ -162,7 +164,7 @@ module cmprs_cmd_decode#(
		// cmprs_run should be off
		output reg sigle_frame_buf, // memory controller uses a single frame buffer (frame_number_* == 0), use other sync
		// outputs sync @ posedge xclk:
		output reg cmprs_en_xclk, // enable compressor, turne off immedaitely
		output reg cmprs_en_xclk, // enable compressor, turn off immedaitely
		output reg cmprs_en_late_xclk, // enable stuffer, extends control fields for graceful shutdown
		// cmprs_start, // single cycle when single or constant compression is turned on
		// cmprs_repeat,// high in repetitive mode
		@@ -283,7 +285,7 @@ module cmprs_cmd_decode#(
		if (mrst) format_mclk <= 0;
		else if (format_we_r) format_mclk <= di_r[30:0];

		if (mrst) color_sat_mclk <= 0;
		if (mrst) color_sat_mclk <= 'h0b6090; // 'h16c120 - saturation = 2
		else if (color_sat_we_r) color_sat_mclk <= di_r[23:0];

		if (mrst) coring_mclk <= 0;
		@@ -292,10 +294,12 @@ module cmprs_cmd_decode#(
		end

		// re-clock to compressor clock

		always @ (posedge xclk) if (ctrl_we_xclk) begin
		always @ (posedge xclk) begin
		cmprs_en_xclk <= cmprs_en_mclk_r;
		cmprs_en_late_xclk <= cmprs_en_mclk_r \|\| cmprs_en_extend;
		end
		always @ (posedge xclk) if (ctrl_we_xclk) begin
		// cmprs_en_late_xclk <= cmprs_en_mclk_r \|\| cmprs_en_extend;
		cmprs_qpage_xclk <= cmprs_qpage_mclk;
		cmprs_dcsub_xclk <= cmprs_dcsub_mclk;
		cmprs_mode_xclk <= cmprs_mode_mclk;

compressor_jp/cmprs_frame_sync.v

+15 −10

Original line number	Diff line number	Diff line
		@@ -40,7 +40,7 @@ module cmprs_frame_sync#(
		input cmprs_standalone, // @mclk single-cycle: generate a single frame_start_dst in unbonded (not synchronized) mode.
		// cmprs_run should be off
		input sigle_frame_buf, // memory controller uses a single frame buffer (frame_number_* == 0), use other sync
		input vsync_late, // @xclk delayed start of frame, @xclk. In 353 it was 16 lines after VACT active
		input vsync_late, // @mclk delayed start of frame, @xclk. In 353 it was 16 lines after VACT active
		// source channel should already start, some delay give time for sequencer commands
		// that should arrive before it
		input frame_started, // @xclk started first macroblock (checking for broken frames)
		@@ -71,7 +71,7 @@ module cmprs_frame_sync#(
		b) turned off enable while frame was being compressed
		Abort frame lasts until flush end or timeout expire
		*/
		wire vsync_late_mclk; // single mclk cycle, reclocked from vsync_late
		// wire vsync_late_mclk; // single mclk cycle, reclocked from vsync_late
		wire frame_started_mclk;
		reg bonded_mode;
		reg frame_start_dst_r;
		@@ -86,12 +86,16 @@ module cmprs_frame_sync#(
		reg [CMPRS_TIMEOUT_BITS-1:0] timeout;
		reg cmprs_en_extend_r=0;
		reg cmprs_en_d;
		// reg cmprs_en_xclk;
		assign frame_start_dst = frame_start_dst_r;
		assign cmprs_en_extend = cmprs_en_extend_r;

		assign stuffer_running_mclk = stuffer_running_mclk_r;
		assign reading_frame = reading_frame_r;

		// always @ (posedge xclk) begin
		// cmprs_en_xclk <=cmprs_en;
		// end
		always @ (posedge mclk) begin
		if (mrst) cmprs_en_extend_r <= 0;
		else if (cmprs_en) cmprs_en_extend_r <= 1;
		@@ -107,34 +111,35 @@ module cmprs_frame_sync#(

		cmprs_en_d <= cmprs_en;

		broken_frame <= cmprs_en && cmprs_run && vsync_late_mclk && reading_frame_r; // single xclk pulse
		broken_frame <= cmprs_en && cmprs_run && vsync_late && reading_frame_r; // single xclk pulse
		aborted_frame <= cmprs_en_d && !cmprs_en && stuffer_running_mclk_r;

		if (!stuffer_running_mclk_r \|\|!cmprs_en_extend_r) force_flush_long <= 0;
		else if (broken_frame \|\| aborted_frame) force_flush_long <= 1;


		if (!cmprs_en \|\| frame_done \|\| (cmprs_run && vsync_late_mclk)) reading_frame_r <= 0;
		if (!cmprs_en \|\| frame_done \|\| (cmprs_run && vsync_late)) reading_frame_r <= 0;
		else if (frame_started_mclk) reading_frame_r <= 1;

		frame_start_dst_r <= cmprs_en && (cmprs_run ? (vsync_late_mclk && !reading_frame_r) : cmprs_standalone);
		frame_start_dst_r <= cmprs_en && (cmprs_run ? (vsync_late && !reading_frame_r) : cmprs_standalone);
		if (!cmprs_en) bonded_mode <= 0;
		else if (cmprs_run) bonded_mode <= 1;
		else if (cmprs_standalone) bonded_mode <= 0;

		if (!cmprs_en \|\| !cmprs_run \|\| vsync_late_mclk) frames_differ <= 0;
		if (!cmprs_en \|\| !cmprs_run \|\| vsync_late) frames_differ <= 0;
		else if (frame_done_src) frames_differ <= 1'b1;

		frames_numbers_differ <= frame_number_src != frame_number;

		line_numbers_sync <= (line_unfinished_src > line_unfinished);

		suspend <= !bonded_mode && ((sigle_frame_buf ? frames_differ : frames_numbers_differ) \|\| line_numbers_sync);
		// suspend <= !bonded_mode && ((sigle_frame_buf ? frames_differ : frames_numbers_differ) \|\| line_numbers_sync);
		suspend <= bonded_mode && ((sigle_frame_buf ? frames_differ : frames_numbers_differ) \|\| !line_numbers_sync);


		end

		pulse_cross_clock vsync_late_mclk_i (.rst(xrst), .src_clk(xclk), .dst_clk(mclk), .in_pulse(vsync_late), .out_pulse(vsync_late_mclk),.busy());
		// pulse_cross_clock vsync_late_mclk_i (.rst(xrst), .src_clk(xclk), .dst_clk(mclk), .in_pulse(cmprs_en_xclk && vsync_late), .out_pulse(vsync_late_mclk),.busy());
		pulse_cross_clock frame_started_i (.rst(xrst), .src_clk(xclk), .dst_clk(mclk), .in_pulse(frame_started), .out_pulse(frame_started_mclk),.busy());

		endmodule

compressor_jp/cmprs_macroblock_buf_iface.v

+14 −4

Original line number	Diff line number	Diff line
		@@ -36,6 +36,7 @@ module cmprs_macroblock_buf_iface (
		output next_page_chn, // single mclk (posedge): Done with the page in the buffer, memory controller may read more data

		input frame_en, // if 0 - will reset logic immediately (but not page number)
		input frame_start_xclk, // frame parameters are valid after this pulse
		input frame_go, // start frame: if idle, will start reading data (if available),
		// if running - will not restart a new frame if 0.
		input [ 4:0] left_marg, // left margin (for not-yet-implemented) mono JPEG (8 lines tile row) can need 7 bits (mod 32 - tile)
		@@ -93,6 +94,7 @@ module cmprs_macroblock_buf_iface (
		// reg first_mb; // from mb_pre_start[2] to mb_pre_start[1]
		wire starting;
		reg frame_pre_run;
		reg [1:0] frame_may_start;

		assign frame_en_w = frame_en && frame_go;

		@@ -106,14 +108,20 @@ module cmprs_macroblock_buf_iface (
		assign last_mb = mb_last_row && mb_last_in_row;
		assign starting = \|mb_pre_start;

		assign mb_pre_start_w = (mb_pre_end_in && (!last_mb \|\| frame_en_w)) \|\| (!frame_pre_run && frame_en_w && !frame_en_r && !starting);
		assign frame_pre_start_w = frame_en_w && ((mb_pre_end_in && last_mb) \|\| (!frame_pre_run && !frame_en_r && !starting));
		// assign mb_pre_start_w = (mb_pre_end_in && (!last_mb \|\| frame_en_w)) \|\| (!frame_pre_run && frame_en_w && !frame_en_r && !starting);
		// assign frame_pre_start_w = frame_en_w && ((mb_pre_end_in && last_mb) \|\| (!frame_pre_run && !frame_en_r && !starting));
		assign mb_pre_start_w = (mb_pre_end_in && (!last_mb \|\| frame_may_start)) \|\| ((frame_may_start==2'b1) && !frame_pre_run && !starting);
		assign frame_pre_start_w = frame_may_start[0] && ((mb_pre_end_in && last_mb) \|\| (!frame_pre_run && !frame_may_start[1] && !starting));

		assign start_page = next_invalid[1:0]; // oldest page needed for this macroblock
		always @ (posedge xclk) begin
		if (!frame_en) frame_en_r <= 0;
		else frame_en_r <= frame_en_w;

		if (!frame_en_w \|\| starting) frame_may_start[0] <= 0;
		else if (frame_start_xclk) frame_may_start[0] <= 1;
		frame_may_start[1] <= frame_may_start[0];

		frame_pre_start_r <= frame_pre_start_w; // same time as mb_pre_start

		if (!frame_en) mb_first_in_row <= 0;
		@@ -147,8 +155,10 @@ module cmprs_macroblock_buf_iface (

		// calculate before starting each macroblock (will wait if buffer is not ready) (TODO: align mb_pre_start[0] to mb_pre_end[2] - same)
		//mb_pre_start_w
		if (!frame_en_r) mb_pre_start <= 0;
		if (mb_pre_start_w) mb_pre_start <= 1;
		else if (!mb_pre_start[4] \|\| buf_ready_w) mb_pre_start <= mb_pre_start << 1;

		if (mb_pre_start[1]) mbl_x_r[6:3] <= mb_first_in_row? {2'b0,left_marg[4:3]} : mbl_x_next_r[6:3];
		if (mb_pre_start[2]) mbl_x_last_r[7:3] <= {1'b0,mbl_x_r[6:3]} + {2'b0,mb_w_m1[5:3]};
		if (mb_pre_start[3]) begin
		@@ -163,7 +173,7 @@ module cmprs_macroblock_buf_iface (
		// at the end of each macroblock - calculate start page increment (and after delay - advance invalidate_next)
		// changed to after started:

		// calculate next start X in page (regardless of emd of macroblock row - selection will be at macroblock start)
		// calculate next start X in page (regardless of end of macroblock row - selection will be at macroblock start)

		if (mb_pre_start[5]) mbl_x_inc_r[7:3] <= {1'b0,mbl_x_r[6:3]} + {3'b0,mb_hper[4:3]};
		if (mb_pre_start[6]) begin

compressor_jp/cmprs_pixel_buf_iface.v

+45 −31

Original line number	Diff line number	Diff line
		@@ -44,8 +44,8 @@ module cmprs_pixel_buf_iface #(
		output [ 1:0] buf_rd, // buf {regen, re}
		// if running - will not restart a new frame if 0.
		input [ 2:0] converter_type, // 0 - color18, 1 - color20, 2 - mono, 3 - jp4, 4 - jp4-diff, 7 - mono8 (not yet implemented)
		input [ 5:0] mb_w_m1, // macroblock width minus 1 // 3 LSB not used, SHOULD BE SET to 3'b111
		input [ 5:0] mb_h_m1, // macroblock horizontal period (8/16) // 3 LSB not used SHOULD BE SET to 3'b111
		input [ 5:0] mb_w_m1, // macroblock width minus 1
		input [ 5:0] mb_h_m1, // macroblock height minus 1
		input [ 1:0] tile_width, // memory tile width (can be 128 for monochrome JPEG) Can be 32/64/128: 0 - 16, 1 - 32, 2 - 64, 3 - 128
		input tile_col_width, // 0 - 16 pixels, 1 -32 pixels
		// Tiles/macroblocks level (from cmprs_macroblock_buf_iface)
		@@ -55,9 +55,9 @@ module cmprs_pixel_buf_iface #(
		input mb_pre_start, // 1 clock cycle before stream of addresses to the buffer
		input [ 1:0] start_page, // page to read next tile from (or first of several pages)
		input [ 6:0] macroblock_x, // macroblock left pixel x relative to a tile (page) Maximal page - 128 bytes wide
		output [ 7:0] data_out, //
		output reg [ 7:0] data_out, //
		output pre_first_out, // For each macroblock in a frame
		output data_valid //
		output reg data_valid //
		);
		localparam PERIOD_COLOR18 = 384; // >1818, limited by 664 (macroblocks)
		localparam PERIOD_COLOR20 = 400; // limited by the 20x20 padded macroblock
		@@ -68,7 +68,7 @@ module cmprs_pixel_buf_iface #(


		reg [CMPRS_BUF_EXTRA_LATENCY+3:0] buf_re=0;
		reg [ 7:0] do_r;
		// reg [ 7:0] do_r;
		reg [11:0] bufa_r; // buffer read address (2 MSB - page number)
		reg [11:0] row_sa; // row start address
		reg [ 9:0] tile_sa; // tile start address for the same row (w/o page number) for continuing row
		@@ -79,9 +79,9 @@ module cmprs_pixel_buf_iface #(
		reg [ 5:0] rows_left;
		reg [ 6:0] tile_x; // horizontal position in a tile
		reg [ 4:0] column_x; // horizontal position in a column (0..31 or 0..15)
		reg last_col;
		reg first_col;
		reg last_row;
		reg last_col; // macroblock last column
		reg first_col; // macroblock first column
		reg last_row; // macroblock last row

		wire addr_run_end; // generate last cycle of address run
		wire [ 6:0] tile_width_or; // set unused msb to all 1
		@@ -105,9 +105,8 @@ module cmprs_pixel_buf_iface #(
		assign mb_pre_end = mb_pre_end_r;
		assign mb_release_buf = mb_release_buf_r;
		assign buf_rd = buf_re[1:0];
		assign data_out = do_r;
		// assign data_out = do_r;
		assign pre_first_out = pre_first_out_r;
		assign data_valid = buf_re[CMPRS_BUF_EXTRA_LATENCY+2];

		always @(posedge xclk) begin
		if (!frame_en) buf_re[0] <= 0;
		@@ -118,7 +117,7 @@ module cmprs_pixel_buf_iface #(
		else buf_re[CMPRS_BUF_EXTRA_LATENCY+3:1] <= {buf_re[CMPRS_BUF_EXTRA_LATENCY+2:0]};

		// Buffer data read:
		if (buf_re[CMPRS_BUF_EXTRA_LATENCY+2]) do_r <= buf_di;
		if (buf_re[CMPRS_BUF_EXTRA_LATENCY+2]) data_out <= buf_di;

		if (!frame_en) pre_first_out_r <= 0;
		else pre_first_out_r <= buf_re[CMPRS_BUF_EXTRA_LATENCY+1] && ! buf_re[CMPRS_BUF_EXTRA_LATENCY+2];
		@@ -131,10 +130,12 @@ module cmprs_pixel_buf_iface #(

		if (!frame_en) buf_re[CMPRS_BUF_EXTRA_LATENCY+2:1] <= 0;

		if (buf_re[0]) last_col <= 0;
		// if (buf_re[0]) last_col <= 0; // ????
		if (!buf_re[0]) last_col <= 0;
		else last_col <= (cols_left == 1);

		if (buf_re[0]) last_row <= 0;
		// if (buf_re[0]) last_row <= 0;
		if (!buf_re[0]) last_row <= 0;
		else if (last_col) last_row <= (rows_left == 1);

		first_col <= (mb_pre_start \|\| (last_col && !last_row));
		@@ -153,12 +154,13 @@ module cmprs_pixel_buf_iface #(
		if (mb_pre_start \|\| last_col) tile_x <= {2'b0,macroblock_x[4:0]} \| tile_width_or;
		else if (buf_re[0]) tile_x <= (tile_x+1) \| tile_width_or;

		if (mb_pre_start \|\| last_col) bufa_r[11:10] <= start_page;
		if (mb_pre_start) bufa_r[11:10] <= start_page;
		else if (last_col) bufa_r[11:10] <= row_sa[11:10]; // start_page;
		else if (last_in_tile) bufa_r[11:10] <= bufa_r[11:10] + 1;

		// Most time critical - calculation of the buffer address
		if (mb_pre_start) bufa_r[9:0] <= {3'b0,macroblock_x};
		else if (last_col) bufa_r[9:0] <= row_sa[9:0];
		else if (last_col) bufa_r[9:0] <= row_sa[9:0]; // 'bx next cycle after AFTER mb_pre_start
		else if (last_in_tile) bufa_r[9:0] <= tile_sa;
		else if (buf_re[0]) bufa_r[9:0] <= bufa_r[9:0] + {last_in_col?col_inc[9:4]:6'b0,4'b1};

		@@ -166,7 +168,7 @@ module cmprs_pixel_buf_iface #(
		if (!frame_en) period_cntr <= 0;
		else if (mb_pre_start) begin
		case (converter_type[2:0])
		CMPRS_COLOR18: period_cntr <= PERIOD_COLOR18 - 1;
		CMPRS_COLOR18: period_cntr <= PERIOD_COLOR18 - 1; // period = 384 - limited by 6*64, not by 18x18
		CMPRS_COLOR20: period_cntr <= PERIOD_COLOR20 - 1;
		CMPRS_MONO16: period_cntr <= PERIOD_MONO16 - 1;
		CMPRS_JP4: period_cntr <= PERIOD_JP4 - 1;
		@@ -182,6 +184,18 @@ module cmprs_pixel_buf_iface #(
		if (!frame_en) mb_release_buf_r <= 0;
		else mb_release_buf_r <= (period_cntr == (CMPRS_RELEASE_EARLY+1));

		data_valid <= buf_re[CMPRS_BUF_EXTRA_LATENCY+2];

		end
		`ifdef SIMULATION
		reg [8:0] sim_dout_cntr;
		always @(posedge xclk) begin
		if (!data_valid) sim_dout_cntr <= 0;
		else sim_dout_cntr <= sim_dout_cntr + 1;
		if (data_valid) begin
		$display("CMPRS INPUT %x:%x @ %t",sim_dout_cntr, data_out, $time);
		end
		end
		`endif

		endmodule

compressor_jp/cmprs_tile_mode_decode.v

+24 −24

Original line number	Diff line number	Diff line
		@@ -29,9 +29,9 @@ module cmprs_tile_mode_decode #(
		parameter CMPRS_MONO8 = 7 // Regular JPEG monochrome with 8x8 macroblocks (not yet implemented)
		)(
		input [2:0] converter_type,
		output reg [ 5:0] mb_w_m1, // macroblock width minus 1 // 3 LSB not used, SHOULD BE SET to 3'b111
		output reg [ 5:0] mb_h_m1, // macroblock horizontal period (8/16) // 3 LSB not used SHOULD BE SET to 3'b111
		output reg [ 4:0] mb_hper, // macroblock horizontal period (8/16) // 3 LSB not used TODO: assign from converter_type[2:0]
		output reg [ 5:0] mb_w_m1, // macroblock width minus 1
		output reg [ 5:0] mb_h_m1, // macroblock height minus 1
		output reg [ 4:0] mb_hper, // macroblock horizontal period (8/16) // 3 LSB not used
		output reg [ 1:0] tile_width, // memory tile width (can be 128 for monochrome JPEG) Can be 32/64/128: 0 - 16, 1 - 32, 2 - 64, 3 - 128
		output reg tile_col_width // 0 - 16 pixels, 1 -32 pixels
		);
		@@ -40,51 +40,51 @@ module cmprs_tile_mode_decode #(
		always @(converter_type) begin
		case (converter_type)
		CMPRS_COLOR18: begin
		mb_w_m1 <= 17; // macroblock width minus 1 // 3 LSB not used, SHOULD BE SET to 3'b111
		mb_h_m1 <= 17; // macroblock horizontal period (8/16) // 3 LSB not used SHOULD BE SET to 3'b111
		mb_hper <= 16; // macroblock horizontal period (8/16) // 3 LSB not used TODO: assign from converter_type[2:0]
		mb_w_m1 <= 17; // macroblock width minus 1
		mb_h_m1 <= 17; // macroblock height minus 1
		mb_hper <= 16; // macroblock horizontal period (8/16) // 3 LSB not used
		tile_width <= 1; // memory tile width (can be 128 for monochrome JPEG) Can be 32/64/128: 0 - 16, 1 - 32, 2 - 64, 3 - 128
		tile_col_width <= 1; // 0 - 16 pixels, 1 -32 pixels
		end
		CMPRS_COLOR20: begin
		mb_w_m1 <= 19; // macroblock width minus 1 // 3 LSB not used, SHOULD BE SET to 3'b111
		mb_h_m1 <= 19; // macroblock horizontal period (8/16) // 3 LSB not used SHOULD BE SET to 3'b111
		mb_hper <= 16; // macroblock horizontal period (8/16) // 3 LSB not used TODO: assign from converter_type[2:0]
		mb_w_m1 <= 19; // macroblock width minus 1
		mb_h_m1 <= 19; // macroblock height minus 1
		mb_hper <= 16; // macroblock horizontal period (8/16) // 3 LSB not used
		tile_width <= 1; // memory tile width (can be 128 for monochrome JPEG) Can be 32/64/128: 0 - 16, 1 - 32, 2 - 64, 3 - 128
		tile_col_width <= 1; // 0 - 16 pixels, 1 -32 pixels
		end
		CMPRS_MONO16: begin
		mb_w_m1 <= 15; // macroblock width minus 1 // 3 LSB not used, SHOULD BE SET to 3'b111
		mb_h_m1 <= 15; // macroblock horizontal period (8/16) // 3 LSB not used SHOULD BE SET to 3'b111
		mb_hper <= 16; // macroblock horizontal period (8/16) // 3 LSB not used TODO: assign from converter_type[2:0]
		mb_w_m1 <= 15; // macroblock width minus 1
		mb_h_m1 <= 15; // macroblock height minus 1
		mb_hper <= 16; // macroblock horizontal period (8/16) // 3 LSB not used
		tile_width <= 2; // memory tile width (can be 128 for monochrome JPEG) Can be 32/64/128: 0 - 16, 1 - 32, 2 - 64, 3 - 128
		tile_col_width <= 1; // 0 - 16 pixels, 1 -32 pixels
		end
		CMPRS_JP4: begin
		mb_w_m1 <= 15; // macroblock width minus 1 // 3 LSB not used, SHOULD BE SET to 3'b111
		mb_h_m1 <= 15; // macroblock horizontal period (8/16) // 3 LSB not used SHOULD BE SET to 3'b111
		mb_hper <= 16; // macroblock horizontal period (8/16) // 3 LSB not used TODO: assign from converter_type[2:0]
		mb_w_m1 <= 15; // macroblock width minus 1
		mb_h_m1 <= 15; // macroblock height minus 1
		mb_hper <= 16; // macroblock horizontal period (8/16) // 3 LSB not used
		tile_width <= 2; // memory tile width (can be 128 for monochrome JPEG) Can be 32/64/128: 0 - 16, 1 - 32, 2 - 64, 3 - 128
		tile_col_width <= 1; // 0 - 16 pixels, 1 -32 pixels
		end
		CMPRS_JP4DIFF: begin
		mb_w_m1 <= 15; // macroblock width minus 1 // 3 LSB not used, SHOULD BE SET to 3'b111
		mb_h_m1 <= 15; // macroblock horizontal period (8/16) // 3 LSB not used SHOULD BE SET to 3'b111
		mb_hper <= 16; // macroblock horizontal period (8/16) // 3 LSB not used TODO: assign from converter_type[2:0]
		mb_w_m1 <= 15; // macroblock width minus 1
		mb_h_m1 <= 15; // macroblock height minus 1
		mb_hper <= 16; // macroblock horizontal period (8/16) // 3 LSB not used
		tile_width <= 2; // memory tile width (can be 128 for monochrome JPEG) Can be 32/64/128: 0 - 16, 1 - 32, 2 - 64, 3 - 128
		tile_col_width <= 1; // 0 - 16 pixels, 1 -32 pixels
		end
		CMPRS_MONO8: begin
		mb_w_m1 <= 7; // macroblock width minus 1 // 3 LSB not used, SHOULD BE SET to 3'b111
		mb_h_m1 <= 7; // macroblock horizontal period (8/16) // 3 LSB not used SHOULD BE SET to 3'b111
		mb_hper <= 8; // macroblock horizontal period (8/16) // 3 LSB not used TODO: assign from converter_type[2:0]
		mb_w_m1 <= 7; // macroblock width minus 1
		mb_h_m1 <= 7; // macroblock height minus 1
		mb_hper <= 8; // macroblock horizontal period (8/16) // 3 LSB not used
		tile_width <= 3; // memory tile width (can be 128 for monochrome JPEG) Can be 32/64/128: 0 - 16, 1 - 32, 2 - 64, 3 - 128
		tile_col_width <= 1; // 0 - 16 pixels, 1 -32 pixels
		end
		default: begin
		mb_w_m1 <= 'bx; // macroblock width minus 1 // 3 LSB not used, SHOULD BE SET to 3'b111
		mb_h_m1 <= 'bx; // macroblock horizontal period (8/16) // 3 LSB not used SHOULD BE SET to 3'b111
		mb_hper <= 'bx; // macroblock horizontal period (8/16) // 3 LSB not used TODO: assign from converter_type[2:0]
		mb_w_m1 <= 'bx; // macroblock width minus 1
		mb_h_m1 <= 'bx; // macroblock height minus 1
		mb_hper <= 'bx; // macroblock horizontal period (8/16) // 3 LSB not used
		tile_width <= 'bx; // memory tile width (can be 128 for monochrome JPEG) Can be 32/64/128: 0 - 16, 1 - 32, 2 - 64, 3 - 128
		tile_col_width <= 'bx; // 0 - 16 pixels, 1 -32 pixels
		end

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