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From: cvs at opencores.org<cvs@o...>
Date: Mon Mar 24 20:37:34 CET 2008
Subject: [cvs-checkins] MODIFIED: spi_slave ...
Date: 00/08/03 24:20:37

Modified: spi_slave/rtl/vhdl opb_if.vhd
Log:
added Register C_ADR_RX_CRC. C_ADR_TX_CRC


Revision Changes Path
1.3 spi_slave/rtl/vhdl/opb_if.vhd

http://www.opencores.org/cvsweb.shtml/spi_slave/rtl/vhdl/opb_if.vhd.diff?r1=1.2&r2=1.3

(In the diff below, changes in quantity of whitespace are not shown.)

Index: opb_if.vhd
===================================================================
RCS file: /cvsroot/dkoethe/spi_slave/rtl/vhdl/opb_if.vhd,v
retrieving revision 1.2
retrieving revision 1.3
diff -u -b -r1.2 -r1.3
--- opb_if.vhd 28 Nov 2007 22:04:47 -0000 1.2
+++ opb_if.vhd 24 Mar 2008 19:37:34 -0000 1.3
@@ -30,7 +30,8 @@
C_FAMILY : string := "virtex-4";
C_SR_WIDTH : integer := 8;
C_FIFO_SIZE_WIDTH : integer := 4;
- C_DMA_EN : boolean := true);
+ C_DMA_EN : boolean := false;
+ C_CRC_EN : boolean := false);
port (
-- OPB-Bus Signals
OPB_ABus : in std_logic_vector(0 to C_OPB_AWIDTH-1);
@@ -68,7 +69,10 @@
opb_tx_dma_num : out std_logic_vector(C_WIDTH_DMA_NUM-1 downto 0);
opb_rx_dma_addr : out std_logic_vector(C_OPB_DWIDTH-1 downto 0);
opb_rx_dma_ctl : out std_logic_vector(0 downto 0);
- opb_rx_dma_num : out std_logic_vector(C_WIDTH_DMA_NUM-1 downto 0));
+ opb_rx_dma_num : out std_logic_vector(C_WIDTH_DMA_NUM-1 downto 0);
+ -- rx crc
+ opb_rx_crc_value : in std_logic_vector(C_SR_WIDTH-1 downto 0);
+ opb_tx_crc_value : in std_logic_vector(C_SR_WIDTH-1 downto 0));
end opb_if;

architecture behavior of opb_if is
@@ -127,7 +131,7 @@
Sln_toutSup <= '0';

--* convert Sln_DBus_big_end to little mode
- conv_big_Sln_DBus_proc: process(Sln_DBus_big_end)
+ conv_big_Sln_DBus_proc : process(Sln_DBus_big_end)
begin
for i in 0 to 31 loop
Sln_DBus(31-i) <= Sln_DBus_big_end(i);
@@ -135,7 +139,7 @@
end process conv_big_Sln_DBus_proc;

--* convert OPB_ABus to big endian
- conv_big_OPB_ABus_proc: process(OPB_ABus)
+ conv_big_OPB_ABus_proc : process(OPB_ABus)
begin
for i in 0 to 31 loop
OPB_ABus_big_end(31-i) <= OPB_ABus(i);
@@ -143,7 +147,7 @@
end process conv_big_OPB_ABus_proc;

--* convert OPB_DBus to little mode
- conv_big_OPB_DBus_proc: process(OPB_DBus)
+ conv_big_OPB_DBus_proc : process(OPB_DBus)
begin
for i in 0 to 31 loop
OPB_DBus_big_end(31-i) <= OPB_DBus(i);
@@ -153,7 +157,7 @@
--* control OPB requests
--*
--* handles OPB-read and -write request
- opb_slave_proc: process (OPB_Rst, OPB_Clk)
+ opb_slave_proc : process (OPB_Rst, OPB_Clk)
begin
if (OPB_Rst = '1') then
-- OPB
@@ -249,8 +253,17 @@
Sln_DBus_big_end(C_WIDTH_DMA_NUM-1 downto 0) <= opb_rx_dma_num_int;
end if;

+ when C_ADR_RX_CRC =>
+ if C_CRC_EN then
+ Sln_DBus_big_end(C_OPB_DWIDTH-1 downto C_SR_WIDTH) <= (others => '0');
+ Sln_DBus_big_end(C_SR_WIDTH-1 downto 0) <= opb_rx_crc_value;
+ end if;

-
+ when C_ADR_TX_CRC =>
+ if C_CRC_EN then
+ Sln_DBus_big_end(C_OPB_DWIDTH-1 downto C_SR_WIDTH) <= (others => '0');
+ Sln_DBus_big_end(C_SR_WIDTH-1 downto 0) <= opb_tx_crc_value;
+ end if;
when others =>
null;
end case;