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  1. ```
  2. 核心板引脚分配:
  3. define_attribute {p:rst_n} {PAP_IO_DIRECTION} {INPUT}
  4. define_attribute {p:rst_n} {PAP_IO_LOC} {U12}
  5. define_attribute {p:rst_n} {PAP_IO_VCCIO} {3.3}
  6. define_attribute {p:rst_n} {PAP_IO_STANDARD} {LVTTL33}
  7. define_attribute {p:sys_clk} {PAP_IO_DIRECTION} {INPUT}
  8. define_attribute {p:sys_clk} {PAP_IO_LOC} {B5}
  9. define_attribute {p:sys_clk} {PAP_IO_VCCIO} {3.3}
  10. define_attribute {p:sys_clk} {PAP_IO_STANDARD} {LVTTL33}
  11. ```
  12. ```
  13. TTL OUTPUT
  14. 1,2,3,4 丝印正确,正常输出
  15. ```
  16. ```
  17. SIGNAL_GENERATOR
  18. 启动方式:
  19. 1.寄存器控制启动
  20. 2.外部触发启动
  21. 3.TIMECODE触发启动
  22. 帧格式:
  23. TIMECODE:
  24. 25/30/...
  25. GENLOCK:
  26. ....
  27. 产生:
  28. 1.start_state_sig (高电平表示拍照进行中)
  29. 2.timecode_sig[64]
  30. 3.timecode_tirgger_sig[1]
  31. 4.genlock_sig[1] 帧信号,场信号
  32. 5.秒信号
  33. TTL_INPUT
  34. TIMECODE_INPUT
  35. TIMECODE_OUTPUT
  36. GENLOCK_INPUT
  37. ```
  38. ```
  39. 1. 修改启动方式
  40. 2. 修改TIMECODE启动时间戳
  41. ```
  42. ```
  43. // timeocde[0->63]
  44. // 0 1 2 3 4 5 6 7
  45. // 帧秒分时 U0U1U2U3
  46. ```