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README.md

https://iflytop1.feishu.cn/docx/Fk3CdIRNZoal1XxCGgjc9q1Dn1f
注意事项:
     倍频和分频的前提建立在输入频率稳定的情况才有效的。如果输入频率在+-一定范围内变化,输出波形可能会出现异常

核心板引脚分配:

define_attribute {p:rst_n} {PAP_IO_DIRECTION} {INPUT}
define_attribute {p:rst_n} {PAP_IO_LOC} {U12}
define_attribute {p:rst_n} {PAP_IO_VCCIO} {3.3}
define_attribute {p:rst_n} {PAP_IO_STANDARD} {LVTTL33}

define_attribute {p:sys_clk} {PAP_IO_DIRECTION} {INPUT}
define_attribute {p:sys_clk} {PAP_IO_LOC} {B5}
define_attribute {p:sys_clk} {PAP_IO_VCCIO} {3.3}
define_attribute {p:sys_clk} {PAP_IO_STANDARD} {LVTTL33}




TTL OUTPUT
     1,2,3,4 丝印正确,正常输出


SIGNAL_GENERATOR
     启动方式:
          1.寄存器控制启动
          2.外部触发启动
          3.TIMECODE触发启动
     帧格式:
          TIMECODE:
               25/30/...
          GENLOCK:
               ....
     产生:
          1.start_state_sig (高电平表示拍照进行中)
          2.timecode_sig[64]
          3.timecode_tirgger_sig[1]
          4.genlock_sig[1] 帧信号,场信号
          5.秒信号


TTL_INPUT
TIMECODE_INPUT
TIMECODE_OUTPUT

GENLOCK_INPUT

1. 修改启动方式
2. 修改TIMECODE启动时间戳





// timeocde[0->63]
// 0 1 2 3  4 5 6 7
// 帧秒分时 U0U1U2U3

插件:
     Documenter - TerosHDL 0.1.4 documentation 
     Verilog-HDL/SystemVerilog/Bluespec SystemVerilog