菜鸟，实在看不懂，用IP核直接生成个异步FIFO，发现不管我怎么改变深度，半满和几乎为满都在发了两个字节后变低了，FIFO好像就满了，然后空标志一直没变化，各位好人帮忙看看我这个FIFO的空标志，半满标志，几乎为满标志是低，还是高有效。
module main_fifo(
rst,
wr_clk,
rd_clk,
din,
wr_en,
rd_en,
dout,
full,
almost_full,
empty,
prog_full
);
input rst;
input wr_clk;
input rd_clk;
input [7 : 0] din;
input wr_en;
input rd_en;
output [0 : 0] dout;
output full;
output almost_full;
output empty;
output prog_full;
// synthesis translate_off
FIFO_GENERATOR_V8_3 #(
.C_ADD_NGC_CONSTRAINT(0),
.C_APPLICATION_TYPE_AXIS(0),
.C_APPLICATION_TYPE_RACH(0),
.C_APPLICATION_TYPE_RDCH(0),
.C_APPLICATION_TYPE_WACH(0),
.C_APPLICATION_TYPE_WDCH(0),
.C_APPLICATION_TYPE_WRCH(0),
.C_AXI_ADDR_WIDTH(32),
.C_AXI_ARUSER_WIDTH(1),
.C_AXI_AWUSER_WIDTH(1),
.C_AXI_BUSER_WIDTH(1),
.C_AXI_DATA_WIDTH(64),
.C_AXI_ID_WIDTH(4),
.C_AXI_RUSER_WIDTH(1),
.C_AXI_TYPE(0),
.C_AXI_WUSER_WIDTH(1),
.C_AXIS_TDATA_WIDTH(64),
.C_AXIS_TDEST_WIDTH(4),
.C_AXIS_TID_WIDTH(8),
.C_AXIS_TKEEP_WIDTH(4),
.C_AXIS_TSTRB_WIDTH(4),
.C_AXIS_TUSER_WIDTH(4),
.C_AXIS_TYPE(0),
.C_COMMON_CLOCK(0),
.C_COUNT_TYPE(0),
.C_DATA_COUNT_WIDTH(14),
.C_DEFAULT_VALUE("BlankString"),
.C_DIN_WIDTH(8),
.C_DIN_WIDTH_AXIS(1),
.C_DIN_WIDTH_RACH(32),
.C_DIN_WIDTH_RDCH(64),
.C_DIN_WIDTH_WACH(32),
.C_DIN_WIDTH_WDCH(64),
.C_DIN_WIDTH_WRCH(2),
.C_DOUT_RST_VAL("0"),
.C_DOUT_WIDTH(1),
.C_ENABLE_RLOCS(0),
.C_ENABLE_RST_SYNC(1),
.C_ERROR_INJECTION_TYPE(0),
.C_ERROR_INJECTION_TYPE_AXIS(0),
.C_ERROR_INJECTION_TYPE_RACH(0),
.C_ERROR_INJECTION_TYPE_RDCH(0),
.C_ERROR_INJECTION_TYPE_WACH(0),
.C_ERROR_INJECTION_TYPE_WDCH(0),
.C_ERROR_INJECTION_TYPE_WRCH(0),
.C_FAMILY("spartan3"),
.C_FULL_FLAGS_RST_VAL(1),
.C_HAS_ALMOST_EMPTY(0),
.C_HAS_ALMOST_FULL(1),
.C_HAS_AXI_ARUSER(0),
.C_HAS_AXI_AWUSER(0),
.C_HAS_AXI_BUSER(0),
.C_HAS_AXI_RD_CHANNEL(0),
.C_HAS_AXI_RUSER(0),
.C_HAS_AXI_WR_CHANNEL(0),
.C_HAS_AXI_WUSER(0),
.C_HAS_AXIS_TDATA(0),
.C_HAS_AXIS_TDEST(0),
.C_HAS_AXIS_TID(0),
.C_HAS_AXIS_TKEEP(0),
.C_HAS_AXIS_TLAST(0),
.C_HAS_AXIS_TREADY(1),
.C_HAS_AXIS_TSTRB(0),
.C_HAS_AXIS_TUSER(0),
.C_HAS_BACKUP(0),
.C_HAS_DATA_COUNT(0),
.C_HAS_DATA_COUNTS_AXIS(0),
.C_HAS_DATA_COUNTS_RACH(0),
.C_HAS_DATA_COUNTS_RDCH(0),
.C_HAS_DATA_COUNTS_WACH(0),
.C_HAS_DATA_COUNTS_WDCH(0),
.C_HAS_DATA_COUNTS_WRCH(0),
.C_HAS_INT_CLK(0),
.C_HAS_MASTER_CE(0),
.C_HAS_MEMINIT_FILE(0),
.C_HAS_OVERFLOW(0),
.C_HAS_PROG_FLAGS_AXIS(0),
.C_HAS_PROG_FLAGS_RACH(0),
.C_HAS_PROG_FLAGS_RDCH(0),
.C_HAS_PROG_FLAGS_WACH(0),
.C_HAS_PROG_FLAGS_WDCH(0),
.C_HAS_PROG_FLAGS_WRCH(0),
.C_HAS_RD_DATA_COUNT(0),
.C_HAS_RD_RST(0),
.C_HAS_RST(1),
.C_HAS_SLAVE_CE(0),
.C_HAS_SRST(0),
.C_HAS_UNDERFLOW(0),
.C_HAS_VALID(0),
.C_HAS_WR_ACK(0),
.C_HAS_WR_DATA_COUNT(0),
.C_HAS_WR_RST(0),
.C_IMPLEMENTATION_TYPE(2),
.C_IMPLEMENTATION_TYPE_AXIS(1),
.C_IMPLEMENTATION_TYPE_RACH(1),
.C_IMPLEMENTATION_TYPE_RDCH(1),
.C_IMPLEMENTATION_TYPE_WACH(1),
.C_IMPLEMENTATION_TYPE_WDCH(1),
.C_IMPLEMENTATION_TYPE_WRCH(1),
.C_INIT_WR_PNTR_VAL(0),
.C_INTERFACE_TYPE(0),
.C_MEMORY_TYPE(1),
.C_MIF_FILE_NAME("BlankString"),
.C_MSGON_VAL(1),
.C_OPTIMIZATION_MODE(0),
.C_OVERFLOW_LOW(0),
.C_PRELOAD_LATENCY(1),
.C_PRELOAD_REGS(0),
.C_PRIM_FIFO_TYPE("8kx4"),
.C_PROG_EMPTY_THRESH_ASSERT_VAL(2),
.C_PROG_EMPTY_THRESH_ASSERT_VAL_AXIS(1022),
.C_PROG_EMPTY_THRESH_ASSERT_VAL_RACH(1022),
.C_PROG_EMPTY_THRESH_ASSERT_VAL_RDCH(1022),
.C_PROG_EMPTY_THRESH_ASSERT_VAL_WACH(1022),
.C_PROG_EMPTY_THRESH_ASSERT_VAL_WDCH(1022),
.C_PROG_EMPTY_THRESH_ASSERT_VAL_WRCH(1022),
.C_PROG_EMPTY_THRESH_NEGATE_VAL(3),
.C_PROG_EMPTY_TYPE(0),
.C_PROG_EMPTY_TYPE_AXIS(5),
.C_PROG_EMPTY_TYPE_RACH(5),
.C_PROG_EMPTY_TYPE_RDCH(5),
.C_PROG_EMPTY_TYPE_WACH(5),
.C_PROG_EMPTY_TYPE_WDCH(5),
.C_PROG_EMPTY_TYPE_WRCH(5),
.C_PROG_FULL_THRESH_ASSERT_VAL(16381),
.C_PROG_FULL_THRESH_ASSERT_VAL_AXIS(1023),
.C_PROG_FULL_THRESH_ASSERT_VAL_RACH(1023),
.C_PROG_FULL_THRESH_ASSERT_VAL_RDCH(1023),
.C_PROG_FULL_THRESH_ASSERT_VAL_WACH(1023),
.C_PROG_FULL_THRESH_ASSERT_VAL_WDCH(1023),
.C_PROG_FULL_THRESH_ASSERT_VAL_WRCH(1023),
.C_PROG_FULL_THRESH_NEGATE_VAL(16380),
.C_PROG_FULL_TYPE(1),
.C_PROG_FULL_TYPE_AXIS(5),
.C_PROG_FULL_TYPE_RACH(5),
.C_PROG_FULL_TYPE_RDCH(5),
.C_PROG_FULL_TYPE_WACH(5),
.C_PROG_FULL_TYPE_WDCH(5),
.C_PROG_FULL_TYPE_WRCH(5),
.C_RACH_TYPE(0),
.C_RD_DATA_COUNT_WIDTH(17),
.C_RD_DEPTH(131072),
.C_RD_FREQ(1),
.C_RD_PNTR_WIDTH(17),
.C_RDCH_TYPE(0),
.C_REG_SLICE_MODE_AXIS(0),
.C_REG_SLICE_MODE_RACH(0),
.C_REG_SLICE_MODE_RDCH(0),
.C_REG_SLICE_MODE_WACH(0),
.C_REG_SLICE_MODE_WDCH(0),
.C_REG_SLICE_MODE_WRCH(0),
.C_UNDERFLOW_LOW(0),
.C_USE_COMMON_OVERFLOW(0),
.C_USE_COMMON_UNDERFLOW(0),
.C_USE_DEFAULT_SETTINGS(0),
.C_USE_DOUT_RST(1),
.C_USE_ECC(0),
.C_USE_ECC_AXIS(0),
.C_USE_ECC_RACH(0),
.C_USE_ECC_RDCH(0),
.C_USE_ECC_WACH(0),
.C_USE_ECC_WDCH(0),
.C_USE_ECC_WRCH(0),
.C_USE_EMBEDDED_REG(0),
.C_USE_FIFO16_FLAGS(0),
.C_USE_FWFT_DATA_COUNT(0),
.C_VALID_LOW(0),
.C_WACH_TYPE(0),
.C_WDCH_TYPE(0),
.C_WR_ACK_LOW(0),
.C_WR_DATA_COUNT_WIDTH(14),
.C_WR_DEPTH(16384),
.C_WR_DEPTH_AXIS(1024),
.C_WR_DEPTH_RACH(16),
.C_WR_DEPTH_RDCH(1024),
.C_WR_DEPTH_WACH(16),
.C_WR_DEPTH_WDCH(1024),
.C_WR_DEPTH_WRCH(16),
.C_WR_FREQ(1),
.C_WR_PNTR_WIDTH(14),
.C_WR_PNTR_WIDTH_AXIS(10),
.C_WR_PNTR_WIDTH_RACH(4),
.C_WR_PNTR_WIDTH_RDCH(10),
.C_WR_PNTR_WIDTH_WACH(4),
.C_WR_PNTR_WIDTH_WDCH(10),
.C_WR_PNTR_WIDTH_WRCH(4),
.C_WR_RESPONSE_LATENCY(1),
.C_WRCH_TYPE(0)
)
inst (
.RST(rst),
.WR_CLK(wr_clk),
.RD_CLK(rd_clk),
.DIN(din),
.WR_EN(wr_en),
.RD_EN(rd_en),
.DOUT(dout),
.FULL(full),
.ALMOST_FULL(almost_full),
.EMPTY(empty),
.PROG_FULL(prog_full),
.BACKUP(),
.BACKUP_MARKER(),
.CLK(),
.SRST(),
.WR_RST(),
.RD_RST(),
.PROG_EMPTY_THRESH(),
.PROG_EMPTY_THRESH_ASSERT(),
.PROG_EMPTY_THRESH_NEGATE(),
.PROG_FULL_THRESH(),
.PROG_FULL_THRESH_ASSERT(),
.PROG_FULL_THRESH_NEGATE(),
.INT_CLK(),
.INJECTDBITERR(),
.INJECTSBITERR(),
.WR_ACK(),
.OVERFLOW(),
.ALMOST_EMPTY(),
.VALID(),
.UNDERFLOW(),
.DATA_COUNT(),
.RD_DATA_COUNT(),
.WR_DATA_COUNT(),
.PROG_EMPTY(),
.SBITERR(),
.DBITERR(),
.M_ACLK(),
.S_ACLK(),
.S_ARESETN(),
.M_ACLK_EN(),
.S_ACLK_EN(),
.S_AXI_AWID(),
.S_AXI_AWADDR(),
.S_AXI_AWLEN(),
.S_AXI_AWSIZE(),
.S_AXI_AWBURST(),
.S_AXI_AWLOCK(),
.S_AXI_AWCACHE(),
.S_AXI_AWPROT(),
.S_AXI_AWQOS(),
.S_AXI_AWREGION(),
.S_AXI_AWUSER(),
.S_AXI_AWVALID(),
.S_AXI_AWREADY(),
.S_AXI_WID(),
.S_AXI_WDATA(),
.S_AXI_WSTRB(),
.S_AXI_WLAST(),
.S_AXI_WUSER(),
.S_AXI_WVALID(),
.S_AXI_WREADY(),
.S_AXI_BID(),
.S_AXI_BRESP(),
.S_AXI_BUSER(),
.S_AXI_BVALID(),
.S_AXI_BREADY(),
.M_AXI_AWID(),
.M_AXI_AWADDR(),
.M_AXI_AWLEN(),
.M_AXI_AWSIZE(),
.M_AXI_AWBURST(),
.M_AXI_AWLOCK(),
.M_AXI_AWCACHE(),
.M_AXI_AWPROT(),
.M_AXI_AWQOS(),
.M_AXI_AWREGION(),
.M_AXI_AWUSER(),
.M_AXI_AWVALID(),
.M_AXI_AWREADY(),
.M_AXI_WID(),
.M_AXI_WDATA(),
.M_AXI_WSTRB(),
.M_AXI_WLAST(),
.M_AXI_WUSER(),
.M_AXI_WVALID(),
.M_AXI_WREADY(),
.M_AXI_BID(),
.M_AXI_BRESP(),
.M_AXI_BUSER(),
.M_AXI_BVALID(),
.M_AXI_BREADY(),
.S_AXI_ARID(),
.S_AXI_ARADDR(),
.S_AXI_ARLEN(),
.S_AXI_ARSIZE(),
.S_AXI_ARBURST(),
.S_AXI_ARLOCK(),
.S_AXI_ARCACHE(),
.S_AXI_ARPROT(),
.S_AXI_ARQOS(),
.S_AXI_ARREGION(),
.S_AXI_ARUSER(),
.S_AXI_ARVALID(),
.S_AXI_ARREADY(),
.S_AXI_RID(),
.S_AXI_RDATA(),
.S_AXI_RRESP(),
.S_AXI_RLAST(),
.S_AXI_RUSER(),
.S_AXI_RVALID(),
.S_AXI_RREADY(),
.M_AXI_ARID(),
.M_AXI_ARADDR(),
.M_AXI_ARLEN(),
.M_AXI_ARSIZE(),
.M_AXI_ARBURST(),
.M_AXI_ARLOCK(),
.M_AXI_ARCACHE(),
.M_AXI_ARPROT(),
.M_AXI_ARQOS(),
.M_AXI_ARREGION(),
.M_AXI_ARUSER(),
.M_AXI_ARVALID(),
.M_AXI_ARREADY(),
.M_AXI_RID(),
.M_AXI_RDATA(),
.M_AXI_RRESP(),
.M_AXI_RLAST(),
.M_AXI_RUSER(),
.M_AXI_RVALID(),
.M_AXI_RREADY(),
.S_AXIS_TVALID(),
.S_AXIS_TREADY(),
.S_AXIS_TDATA(),
.S_AXIS_TSTRB(),
.S_AXIS_TKEEP(),
.S_AXIS_TLAST(),
.S_AXIS_TID(),
.S_AXIS_TDEST(),
.S_AXIS_TUSER(),
.M_AXIS_TVALID(),
.M_AXIS_TREADY(),
.M_AXIS_TDATA(),
.M_AXIS_TSTRB(),
.M_AXIS_TKEEP(),
.M_AXIS_TLAST(),
.M_AXIS_TID(),
.M_AXIS_TDEST(),
.M_AXIS_TUSER(),
.AXI_AW_INJECTSBITERR(),
.AXI_AW_INJECTDBITERR(),
.AXI_AW_PROG_FULL_THRESH(),
.AXI_AW_PROG_EMPTY_THRESH(),
.AXI_AW_DATA_COUNT(),
.AXI_AW_WR_DATA_COUNT(),
.AXI_AW_RD_DATA_COUNT(),
.AXI_AW_SBITERR(),
.AXI_AW_DBITERR(),
.AXI_AW_OVERFLOW(),
.AXI_AW_UNDERFLOW(),
.AXI_W_INJECTSBITERR(),
.AXI_W_INJECTDBITERR(),
.AXI_W_PROG_FULL_THRESH(),
.AXI_W_PROG_EMPTY_THRESH(),
.AXI_W_DATA_COUNT(),
.AXI_W_WR_DATA_COUNT(),
.AXI_W_RD_DATA_COUNT(),
.AXI_W_SBITERR(),
.AXI_W_DBITERR(),
.AXI_W_OVERFLOW(),
.AXI_W_UNDERFLOW(),
.AXI_B_INJECTSBITERR(),
.AXI_B_INJECTDBITERR(),
.AXI_B_PROG_FULL_THRESH(),
.AXI_B_PROG_EMPTY_THRESH(),
.AXI_B_DATA_COUNT(),
.AXI_B_WR_DATA_COUNT(),
.AXI_B_RD_DATA_COUNT(),
.AXI_B_SBITERR(),
.AXI_B_DBITERR(),
.AXI_B_OVERFLOW(),
.AXI_B_UNDERFLOW(),
.AXI_AR_INJECTSBITERR(),
.AXI_AR_INJECTDBITERR(),
.AXI_AR_PROG_FULL_THRESH(),
.AXI_AR_PROG_EMPTY_THRESH(),
.AXI_AR_DATA_COUNT(),
.AXI_AR_WR_DATA_COUNT(),
.AXI_AR_RD_DATA_COUNT(),
.AXI_AR_SBITERR(),
.AXI_AR_DBITERR(),
.AXI_AR_OVERFLOW(),
.AXI_AR_UNDERFLOW(),
.AXI_R_INJECTSBITERR(),
.AXI_R_INJECTDBITERR(),
.AXI_R_PROG_FULL_THRESH(),
.AXI_R_PROG_EMPTY_THRESH(),
.AXI_R_DATA_COUNT(),
.AXI_R_WR_DATA_COUNT(),
.AXI_R_RD_DATA_COUNT(),
.AXI_R_SBITERR(),
.AXI_R_DBITERR(),
.AXI_R_OVERFLOW(),
.AXI_R_UNDERFLOW(),
.AXIS_INJECTSBITERR(),
.AXIS_INJECTDBITERR(),
.AXIS_PROG_FULL_THRESH(),
.AXIS_PROG_EMPTY_THRESH(),
.AXIS_DATA_COUNT(),
.AXIS_WR_DATA_COUNT(),
.AXIS_RD_DATA_COUNT(),
.AXIS_SBITERR(),
.AXIS_DBITERR(),
.AXIS_OVERFLOW(),
.AXIS_UNDERFLOW()
);
// synthesis translate_on
endmodule |
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