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[SOLVED] What does WR1_LENGTH1 means in SDRAM Controller

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hilal-t

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What does WR1_LENGTH means here



Code: 
//SDRam Read and Write as Frame Buffer
Sdram_Control	u7	(				
.RESET_N(KEY[0]),
.CLK(sdram_ctrl_clk),
//	FIFO Write Side 1
.WR1_DATA({1'b0,sCCD_G[11:7],sCCD_B[11:2]}),
.WR1(sCCD_DVAL),
.WR1_ADDR(0),
`ifdef VGA_640x480p60
	.WR1_MAX_ADDR(640*480/2),


	 [COLOR="#FF0000"][SIZE=3][B].WR1_LENGTH(8'h50),[/B][/SIZE][/COLOR]

thank you very much
 
Last edited by a moderator:

Try reading the vendor's documentation, for whichever vendor this core is for.
 
Where did you find this *.v file at?
Who is the manufacturer of the memory you're trying to communicate with?
 
in fact this is example of streaming video from d5m camera to vga
I will attach the project file
I am using de2-115 board
thank you for your help
 

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Last edited:

hilal-t said:
in fact this is example of streaming video from d5m camera to vga
I will attach the project file
I am using de2-115 board
thank you for your help
Click to expand...

The code is by Terasic and isn't encrypted, just reverse engineer what the WR1_LENGTH does. By quick inspection it looks like it sets the burst length as it's compared with the addresses.

You should try putting in more effort before posting. It's pretty easy to open a Verilog file and read the contents.

Regards
 
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