HDMI 采集芯片 ADV7611 采集 PC 数据调试总结 开发环境：TI DM365 平台， ADV7611 采集板， CCS5.5 第一步：I2C 调通 这张是 ADV7611 读写的时序图，可以看出在写和读的时候发送地址数据的时候的停 止位信息是不同的，在写的时候是不需要停止位的，但是读的时候是要停止位的。如果 I2C 在硬件没问题的时候可以考虑是不是这方面的问题。 第二步：map 配置： 根据官方推荐配置进行配置： [cpp] view plain copy 1. 2. 3. 4. 5. 6. 7. 8. 0x98, 0xFF, 0x80, // I2C reset 0x98, 0xF4, 0x80,// CEC SLAVE ADDRESS 0x98, 0xF5, 0x7C,// INFOFRAME SLAVE ADDRESS 0x98, 0xF8, 0x4C,// DPLL SLAVE ADDRESS 0x98, 0xF9, 0x64,// KSV SLAVE ADDRESS 0x98, 0xFA, 0x6C,// EDID SLAVE ADDRESS 0x98, 0xFB, 0x68,// HDMI SLAVE ADDRESS 0x98, 0xFD, 0x44,// CP SLAVE ADDRESS 第三步：EDID EDID 里面主要是定义了这显示设备所支持的图像分辨率，支持的声音格式，声音通道，及 3D 等等，其目 的是告诉外接设备我所支持的特性，让外接设备输出一个我所支持的 timing，否则外接设备输出的 timing 并不支持的话那就没有图像，声音的显示了。ADV7611 在上电后需要配置 EDID 使得输出端读取 EDID 的内容然后配置相应的输出，下面是相应的 EDID 配置： 

[cpp] view plain copy { unsigned char vga_edid[256] = 1. 2. 3. 4. 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, //00 5. 0x06, 0x8F, 0x07, 0x11, 0x01, 0x00, 0x00, 0x00, //08 6. 0x17, 0x11, 0x01, 0x03, 0x80, 0x0C, 0x09, 0x78, //10 7. 0x0A, 0x1E, 0xAC, 0x98, 0x59, 0x56, 0x85, 0x28, //18 8. 0x29, 0x52, 0x57, 0x00, 0x00, 0x00, 0x01, 0x01, //20 9. 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, //28 10. 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x8C, 0x0A, //30 11. 0xD0, 0x8A, 0x20, 0xE0, 0x2D, 0x10, 0x10, 0x3E, //38 12. 0x96, 0x00, 0x81, 0x60, 0x00, 0x00, 0x00, 0x18, //40 13. 0x01, 0x1D, 0x80, 0x18, 0x71, 0x1C, 0x16, 0x20, //48 14. 0x58, 0x2C, 0x25, 0x00, 0x81, 0x49, 0x00, 0x00, //50 15. 0x00, 0x9E, 0x00, 0x00, 0x00, 0xFC, 0x00, 0x56, //58 16. 0x41, 0x2D, 0x31, 0x38, 0x30, 0x39, 0x41, 0x0A, //60 17. 0x20, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xFD, //68 18. 0x00, 0x17, 0x3D, 0x0D, 0x3E, 0x11, 0x00, 0x0A, //70 19. 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x01, 0x1C, //78 20. 0x02, 0x03, 0x34, 0x71, 0x4D, 0x82, 0x05, 0x04, 21. 0x01, 0x10, 0x11, 0x14, 0x13, 0x1F,0x06, 0x15, 22. 0x03, 0x12, 0x35, 0x0F, 0x7F, 0x07,0x17, 0x1F, 23. 0x38, 0x1F, 0x07, 0x30, 0x2F, 0x07,0x72, 0x3F, 24. 0x7F, 0x72, 0x57, 0x7F, 0x00, 0x37,0x7F, 0x72, 25. 0x83, 0x4F, 0x00, 0x00, 0x67, 0x03,0x0C, 0x00, 26. 0x10, 0x00, 0x88, 0x2D, 0x00, 0x00,0x00, 0xFF, 27. 0x00, 0x0A, 0x20, 0x20, 0x20, 0x20,0x20, 0x20, 28. 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,0x00, 0x00, 29. 0x00, 0xFF, 0x00, 0x0A, 0x20, 0x20,0x20, 0x20, 30. 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,0x20, 0x20, 31. 0x00, 0x00, 0x00, 0xFF, 0x00, 0x0A,0x20, 0x20, 32. 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,0x20, 0x20, 33. 0x20, 0x20, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 34. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0x00, 35. 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,0x00, 0xDA, 36. }； 37. void i2c_program_edid(unsigned char *data, int length) 38. { 39. unsigned long i; 40. ADV7611_Write(0x64, 0x77, 0x00); 41. ADV7611_Write(0x64, 0x74, 0x00); 42. for (i=0; i

43. ADV7611_Write(0x6C, i, data[i]); 44. for (i=0; i<800000; i++); // delay for HPA 45. ADV7611_Write(0x64, 0x77, 0x00); 46. ADV7611_Write(0x64, 0x52, 0x20); 47. ADV7611_Write(0x64, 0x53, 0x00); 48. ADV7611_Write(0x64, 0x70, 0x9E); 49. ADV7611_Write(0x64, 0x74, 0x01); 50. } 第四步:其他参数配置 [cpp] view plain copy 0x98, 0x00, 0x02, 0x98, 0x01, 0x05, 0x98, 0x02, 0xF5,// Auto CSC, no YPbPr colorspace conversion, // set the output range of the digital data = limited range (16 to 235), YCr Cb out 1. 2. 3. 4. 5. 6. 7. 8. 0x98, 0x03, 0x20,// 0x80 = 16-bit ITU-656 SDR mode; 0x20 = 8-bit 4:2:2 DDR m ode (ITU-656 mode) 0x98, 0x04, 0x62,// 011 - P[23:16] V/R, P[15:8] Y/G, P[7:0] U/CrCb/B ; XTAL = 28.868 MHz 0x98, 0x05, 0x28,// DE output on the FIELD/DE pin ; AV Codes Off 9. 10. 11. 12. // 0x98, 0x06, 0xA0,// 13. 0x98, 0x0B, 0x44,// Powers up CP and digital sections of HDMI block; Powers up XTAL buffer to the digital core 14. 0x98, 0x0C, 0x42,// Chip is operational,Disables power save mode,Powers up t he clock to the CP core,Powers up the pads of the digital output pins 15. 0x98, 0x14, 0x7F,// High drive strength of data output drivers;output pixel clock out signal on the LLC pin, 16. // synchronization pins, HS, VS/FIELD, FIELD/DE;audio ou tput interface pins (AP0, AP1/I2S_TDM, AP2 ... AP5). 17. 0x98, 0x15, 0x80,// Disable Tristate of Pins 18. // 0x98, 0x19, 0x83,// LLC DLL phase 19. 0x98, 0x19, 0xca,// LLC DLL phase 20. // 0x98, 0x19, 0xCA,// LLC DLL phase 21. // 0x98, 0x19, 0x8A,// LLC DLL phase 22. 0x98, 0x33, 0x40,// LLC DLL enable 23. 0x44, 0xBA, 0x01,// Set HDMI FreeRun when the TMDS clock is not detected on the selected HDMI port 

24. // 0x44, 0x3E, 0x01, 25. 0x64, 0x00, 0x40, 26. 0x64, 0x40, 0x81,// Disable HDCP 1.1 features 27. 0x68, 0x9B, 0x03,// ADI recommended setting 28. 0x68, 0xC1, 0x01,// ADI recommended setting 29. 0x68, 0xC2, 0x01,// ADI recommended setting 30. 0x68, 0xC3, 0x01,// ADI recommended setting 31. 0x68, 0xC4, 0x01,// ADI recommended setting 32. 0x68, 0xC5, 0x01,// ADI recommended setting 33. 0x68, 0xC6, 0x01,// ADI recommended setting 34. 0x68, 0xC7, 0x01,// ADI recommended setting 35. 0x68, 0xC8, 0x01,// ADI recommended setting 36. 0x68, 0xC9, 0x01,// ADI recommended setting 37. 0x68, 0xCA, 0x01,// ADI recommended setting 38. 0x68, 0xCB, 0x01,// ADI recommended setting 39. 0x68, 0xCC, 0x01,// ADI recommended setting 40. 0x68, 0x00, 0x00,// Set HDMI Input Port A 41. 0x68, 0x83, 0xFE,// Enable clock terminator for port A 42. 0x68, 0x6F, 0x0C,// ADI recommended setting 43. 0x68, 0x85, 0x1F,// ADI recommended setting 44. 0x68, 0x87, 0x70,// ADI recommended setting 45. 0x68, 0x8D, 0x04,// LF gain equalizer settings for dynamic mode range 1 46. 0x68, 0x8E, 0x1E,// HF gain equalizer settings for dynamic mode range 1 47. 0x68, 0x1A, 0x8A,// unmute audio 48. 0x68, 0x57, 0xDA,// ADI recommended setting 49. 0x68, 0x58, 0x01,// ADI recommended setting 50. 0x68, 0x03, 0x98, // DIS_I2C_ZERO_COMPR 51. 0x68, 0x75, 0x10,// DDC drive strength 这个配置是 yuv4:2:2 8bit 的配置