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- added FCS generation enable

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git-svn-id: http://moon:8086/svn/vhdl/trunk@894 cc03376c-175c-47c8-b038-4cd826a8556b
This commit is contained in:
jens
2010-04-09 08:59:44 +00:00
parent 9991abfebf
commit 330b7e019e
1 changed files with 11 additions and 2 deletions
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lib/emac/src/emac_tx.vhd
+10 -1
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@@ -102,6 +102,7 @@ ARCHITECTURE behavior OF emac_tx IS
signal reset_pipe : unsigned(31 downto 0); signal reset_pipe : unsigned(31 downto 0);
signal Gbps_en : std_logic; signal Gbps_en : std_logic;
signal fcs_gen_en : std_logic;
signal fcs_inject_en : std_logic; signal fcs_inject_en : std_logic;
signal fcs_rst : std_logic; signal fcs_rst : std_logic;
@@ -377,6 +378,7 @@ host2xfer_sync_register:
begin begin
if rising_edge(mii_tx_clk) then if rising_edge(mii_tx_clk) then
Gbps_en <= ctrl_in.Gbps_en; Gbps_en <= ctrl_in.Gbps_en;
fcs_gen_en <= ctrl_in.fcs_gen_en;
end if; end if;
end process; end process;
@@ -492,7 +494,7 @@ xfer_state_next:
end process; end process;
xfer_state: xfer_state:
process(xfer_s, ifg_idle, cmd_fifo_empty, piso32_din_rdy, piso32_dout_vld, xfer_bsy) process(xfer_s, ifg_idle, cmd_fifo_empty, piso32_din_rdy, piso32_dout_vld, xfer_bsy, fcs_gen_en)
begin begin
piso32_din_vld <= '0'; piso32_din_vld <= '0';
@@ -550,8 +552,11 @@ xfer_state:
when xfer_stop => when xfer_stop =>
if piso32_dout_vld = '0' then if piso32_dout_vld = '0' then
xfer_sn <= xfer_finish;
if fcs_gen_en = '1' then
xfer_sn <= xfer_crc; xfer_sn <= xfer_crc;
end if; end if;
end if;
when xfer_crc => when xfer_crc =>
fcs_inject_en <= piso32_din_rdy; fcs_inject_en <= piso32_din_rdy;
@@ -651,6 +656,10 @@ fcs_enable_gen:
fcs_din_vld <= fcs_en(fcs_en'left) and piso32_dout_vld and piso32_dout_en; fcs_din_vld <= fcs_en(fcs_en'left) and piso32_dout_vld and piso32_dout_en;
inst_fcs: entity work.crc32 inst_fcs: entity work.crc32
GENERIC MAP
(
crc32_init => X"00000000"
)
PORT MAP PORT MAP
( (
rst => fcs_rst, rst => fcs_rst,