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- generate CKE from SDRAM CMD fsm. Simplified interfaces

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git-svn-id: http://moon:8086/svn/vhdl/trunk@1233 cc03376c-175c-47c8-b038-4cd826a8556b
This commit is contained in:
jens
2015-05-25 12:13:27 +00:00
parent ce79902c62
commit 1bc700a041
3 changed files with 22 additions and 23 deletions
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lib/SDRAM/ddr_sdr_v1_5/src/sdram_ctrl.vhd
+1 -5
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@@ -48,8 +48,7 @@ entity sdram_ctrl is
sdr_cmd_busy : in STD_LOGIC;
sdr_cmd : out sdr_cmd_t;
sdr_cmd_we : out STD_LOGIC;
sdr_mode : out mode_word_t;
sdr_cke : out STD_LOGIC
sdr_mode : out mode_word_t
);
end sdram_ctrl;
@@ -198,7 +197,6 @@ fsm_ctrl_state:
sdr_cmd_we <= '0';
sdr_mode <= bank_addr_reg & row_addr_reg;
col_addr <= col_addr_reg;
sdr_cke <= '1';
seq_cnt_en <= '0';
seq_rst_en <= '0';
addr_reg_load_en <= '0';
@@ -210,12 +208,10 @@ fsm_ctrl_state:
st_ctrl_next <= st_ctrl;
case st_ctrl is
when RESET =>
sdr_cke <= '0';
pwr_up_cnt_rst <= '1';
st_ctrl_next <= POWER_WAIT;
when POWER_WAIT =>
sdr_cke <= '0';
if pwr_up_finished = '1' then
seq_rst_en <= '1';
st_ctrl_next <= INIT;