63
Video
Function
Command
Graphic horizontal sync frequency enquiry
0xb9
MCC Command Example
Byte #1 Byte #2 Byte #3 Byte #4 Byte #5 Byte #6 Byte #7 Byte #8 Byte #9
0x07
0xFF
0x4D
0x43
0x43
0x01
0x25
0xB9
0x46
Acknowledge Response
Byte #1 Byte #2 Byte #3 Byte #4 Byte #5 Byte #6 Byte #7 Byte #8 Byte #9 Byte #10 Byte #11 By
0x06
0xFF
0x4D
0x43
0x43
0x04
0x23
0xB9
0x33
0x31
0x46
Three digit hex number represents horizontal sync frequency divided by 100.
To obtain the final horizontal sync frequency multiply the three digit hex number by 100.
0x33, 0x31, 0x46 = 0x31F = 799 = 79.9KHz
Function
Command
Graphic vertical resolution enquiry
0xb8
MCC Command Example
Byte #1 Byte #2 Byte #3 Byte #4 Byte #5 Byte #6 Byte #7 Byte #8 Byte #9
0x07
0xFF
0x4D
0x43
0x43
0x01
0x25
0xB8
0x47
Acknowledge Response
Byte #1 Byte #2 Byte #3 Byte #4 Byte #5 Byte #6 Byte #7 Byte #8 Byte #9 Byte #10
0x06
0xFF
0x4D
0x43
0x43
0x04
0x23
0xB8
0x34
0x30
Byte #11 Byte #12
0x30
0xB3
Three digit hex number represents graphic vertical resolution in pixels.
0x34, 0x30, 0x30 = 0x400 = 1024 pixels