CERN FMC ADC 100M 14b 4cha solderpad
cern-fmc-adc-100m-14b-4cha / hdl / spec / rtl / carrier_csr.vhd
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-- Title : Wishbone slave core for Carrier control and status registers
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-- File : ../rtl/carrier_csr.vhd
-- Author : auto-generated by wbgen2 from carrier_csr.wb
-- Created : Tue Aug 30 10:54:01 2011
-- Standard : VHDL'87
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-- THIS FILE WAS GENERATED BY wbgen2 FROM SOURCE FILE carrier_csr.wb
-- DO NOT HAND-EDIT UNLESS IT'S ABSOLUTELY NECESSARY!
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library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
entity carrier_csr is
port (
rst_n_i : in std_logic;
wb_clk_i : in std_logic;
wb_addr_i : in std_logic_vector(2 downto 0);
wb_data_i : in std_logic_vector(31 downto 0);
wb_data_o : out std_logic_vector(31 downto 0);
wb_cyc_i : in std_logic;
wb_sel_i : in std_logic_vector(3 downto 0);
wb_stb_i : in std_logic;
wb_we_i : in std_logic;
wb_ack_o : out std_logic;
-- Port for std_logic_vector field: 'PCB revision' in reg: 'Carrier type and PCB version'
carrier_csr_carrier_pcb_rev_i : in std_logic_vector(3 downto 0);
-- Port for std_logic_vector field: 'Dummy' in reg: 'Carrier type and PCB version'
carrier_csr_carrier_dummy_i : in std_logic_vector(11 downto 0);
-- Port for std_logic_vector field: 'Carrier type' in reg: 'Carrier type and PCB version'
carrier_csr_carrier_type_i : in std_logic_vector(15 downto 0);
-- Port for std_logic_vector field: 'Bitstream type' in reg: 'Bitstream type'
carrier_csr_bitstream_type_i : in std_logic_vector(31 downto 0);
-- Port for std_logic_vector field: 'Bitstream date' in reg: 'Bitstream date'
carrier_csr_bitstream_date_i : in std_logic_vector(31 downto 0);
-- Port for BIT field: 'FMC presence' in reg: 'Status'
carrier_csr_stat_fmc_pres_i : in std_logic;
-- Port for BIT field: 'GN4142 core P2L PLL status' in reg: 'Status'
carrier_csr_stat_p2l_pll_lck_i : in std_logic;
-- Port for BIT field: 'System clock PLL status' in reg: 'Status'
carrier_csr_stat_sys_pll_lck_i : in std_logic;
-- Port for BIT field: 'DDR3 calibration status' in reg: 'Status'
carrier_csr_stat_ddr3_cal_done_i : in std_logic;
-- Port for BIT field: 'Green LED' in reg: 'Control'
carrier_csr_ctrl_led_green_o : out std_logic;
-- Port for BIT field: 'Red LED' in reg: 'Control'
carrier_csr_ctrl_led_red_o : out std_logic;
-- Port for BIT field: 'DAC clear' in reg: 'Control'
carrier_csr_ctrl_dac_clr_n_o : out std_logic
);
end carrier_csr;
architecture syn of carrier_csr is
signal carrier_csr_ctrl_led_green_int : std_logic ;
signal carrier_csr_ctrl_led_red_int : std_logic ;
signal carrier_csr_ctrl_dac_clr_n_int : std_logic ;
signal ack_sreg : std_logic_vector(9 downto 0);
signal rddata_reg : std_logic_vector(31 downto 0);
signal wrdata_reg : std_logic_vector(31 downto 0);
signal bwsel_reg : std_logic_vector(3 downto 0);
signal rwaddr_reg : std_logic_vector(2 downto 0);
signal ack_in_progress : std_logic ;
signal wr_int : std_logic ;
signal rd_int : std_logic ;
signal bus_clock_int : std_logic ;
signal allones : std_logic_vector(31 downto 0);
signal allzeros : std_logic_vector(31 downto 0);
begin
-- Some internal signals assignments. For (foreseen) compatibility with other bus standards.
wrdata_reg <= wb_data_i;
bwsel_reg <= wb_sel_i;
bus_clock_int <= wb_clk_i;
rd_int <= wb_cyc_i and (wb_stb_i and (not wb_we_i));
wr_int <= wb_cyc_i and (wb_stb_i and wb_we_i);
allones <= (others => '1');
allzeros <= (others => '0');
--
-- Main register bank access process.
process (bus_clock_int, rst_n_i)
begin
if (rst_n_i = '0') then
ack_sreg <= "0000000000";
ack_in_progress <= '0';
rddata_reg <= "00000000000000000000000000000000";
carrier_csr_ctrl_led_green_int <= '0';
carrier_csr_ctrl_led_red_int <= '0';
carrier_csr_ctrl_dac_clr_n_int <= '0';
elsif rising_edge(bus_clock_int) then
-- advance the ACK generator shift register
ack_sreg(8 downto 0) <= ack_sreg(9 downto 1);
ack_sreg(9) <= '0';
if (ack_in_progress = '1') then
if (ack_sreg(0) = '1') then
ack_in_progress <= '0';
else
end if;
else
if ((wb_cyc_i = '1') and (wb_stb_i = '1')) then
case rwaddr_reg(2 downto 0) is
when "000" =>
if (wb_we_i = '1') then
else
rddata_reg(3 downto 0) <= carrier_csr_carrier_pcb_rev_i;
rddata_reg(15 downto 4) <= carrier_csr_carrier_dummy_i;
rddata_reg(31 downto 16) <= carrier_csr_carrier_type_i;
end if;
ack_sreg(0) <= '1';
ack_in_progress <= '1';
when "001" =>
if (wb_we_i = '1') then
else
rddata_reg(31 downto 0) <= carrier_csr_bitstream_type_i;
end if;
ack_sreg(0) <= '1';
ack_in_progress <= '1';
when "010" =>
if (wb_we_i = '1') then
else
rddata_reg(31 downto 0) <= carrier_csr_bitstream_date_i;
end if;
ack_sreg(0) <= '1';
ack_in_progress <= '1';
when "011" =>
if (wb_we_i = '1') then
else
rddata_reg(0) <= carrier_csr_stat_fmc_pres_i;
rddata_reg(1) <= carrier_csr_stat_p2l_pll_lck_i;
rddata_reg(2) <= carrier_csr_stat_sys_pll_lck_i;
rddata_reg(3) <= carrier_csr_stat_ddr3_cal_done_i;
rddata_reg(4) <= 'X';
rddata_reg(5) <= 'X';
rddata_reg(6) <= 'X';
rddata_reg(7) <= 'X';
rddata_reg(8) <= 'X';
rddata_reg(9) <= 'X';
rddata_reg(10) <= 'X';
rddata_reg(11) <= 'X';
rddata_reg(12) <= 'X';
rddata_reg(13) <= 'X';
rddata_reg(14) <= 'X';
rddata_reg(15) <= 'X';
rddata_reg(16) <= 'X';
rddata_reg(17) <= 'X';
rddata_reg(18) <= 'X';
rddata_reg(19) <= 'X';
rddata_reg(20) <= 'X';
rddata_reg(21) <= 'X';
rddata_reg(22) <= 'X';
rddata_reg(23) <= 'X';
rddata_reg(24) <= 'X';
rddata_reg(25) <= 'X';
rddata_reg(26) <= 'X';
rddata_reg(27) <= 'X';
rddata_reg(28) <= 'X';
rddata_reg(29) <= 'X';
rddata_reg(30) <= 'X';
rddata_reg(31) <= 'X';
end if;
ack_sreg(0) <= '1';
ack_in_progress <= '1';
when "100" =>
if (wb_we_i = '1') then
carrier_csr_ctrl_led_green_int <= wrdata_reg(0);
carrier_csr_ctrl_led_red_int <= wrdata_reg(1);
carrier_csr_ctrl_dac_clr_n_int <= wrdata_reg(2);
else
rddata_reg(0) <= carrier_csr_ctrl_led_green_int;
rddata_reg(1) <= carrier_csr_ctrl_led_red_int;
rddata_reg(2) <= carrier_csr_ctrl_dac_clr_n_int;
rddata_reg(3) <= 'X';
rddata_reg(4) <= 'X';
rddata_reg(5) <= 'X';
rddata_reg(6) <= 'X';
rddata_reg(7) <= 'X';
rddata_reg(8) <= 'X';
rddata_reg(9) <= 'X';
rddata_reg(10) <= 'X';
rddata_reg(11) <= 'X';
rddata_reg(12) <= 'X';
rddata_reg(13) <= 'X';
rddata_reg(14) <= 'X';
rddata_reg(15) <= 'X';
rddata_reg(16) <= 'X';
rddata_reg(17) <= 'X';
rddata_reg(18) <= 'X';
rddata_reg(19) <= 'X';
rddata_reg(20) <= 'X';
rddata_reg(21) <= 'X';
rddata_reg(22) <= 'X';
rddata_reg(23) <= 'X';
rddata_reg(24) <= 'X';
rddata_reg(25) <= 'X';
rddata_reg(26) <= 'X';
rddata_reg(27) <= 'X';
rddata_reg(28) <= 'X';
rddata_reg(29) <= 'X';
rddata_reg(30) <= 'X';
rddata_reg(31) <= 'X';
end if;
ack_sreg(0) <= '1';
ack_in_progress <= '1';
when others =>
-- prevent the slave from hanging the bus on invalid address
ack_in_progress <= '1';
ack_sreg(0) <= '1';
end case;
end if;
end if;
end if;
end process;
-- Drive the data output bus
wb_data_o <= rddata_reg;
-- PCB revision
-- Dummy
-- Carrier type
-- Bitstream type
-- Bitstream date
-- FMC presence
-- GN4142 core P2L PLL status
-- System clock PLL status
-- DDR3 calibration status
-- Green LED
carrier_csr_ctrl_led_green_o <= carrier_csr_ctrl_led_green_int;
-- Red LED
carrier_csr_ctrl_led_red_o <= carrier_csr_ctrl_led_red_int;
-- DAC clear
carrier_csr_ctrl_dac_clr_n_o <= carrier_csr_ctrl_dac_clr_n_int;
rwaddr_reg <= wb_addr_i;
-- ACK signal generation. Just pass the LSB of ACK counter.
wb_ack_o <= ack_sreg(0);
end syn;