TiGHT AV DSP-AEC-1010-DA Manual page 29

1. Parameter Control (0x21)
At this point, the formats of data section are as follows.
byte5
Input/Output
byte5: It indicate control input or output channel, 0x2- input channels and 0x1-output channels byte6-7: They indicate
start and end channel numbers. Channel numbers start from 0. byte8: This kind of parameter is the same with V1
version. Please refer to Appendix B.
byte9-40: Fill in parameter values of start to end channels. It shall be filled in from the ninth byte. Each parameter value shall
take two bytes.
2. Parameter Acquisition (0x22)
Data section format is the same with parameter controls. Parameter values may not be filled in.
acquired parameters will be filled in this position.
3. Scenario Switch (0x13) byte5: Fill in scenario numbers (0-15). byte6-8: Fill in 0.
4. Other Controls (0x74)
Other controls include but not limited to GPIO, RS232, RS485 and central control replies. The protocol formats are as follows.
GPIO:
byte5 byte6
Control Data
Type Length
The controlling type for byte5 is 1.
The data length of byte6 is fixed as four bytes.
Byte9 GPIO direction, set input or output. Value 0 indicates input, and value 1 indicates output.
Byte10-11 start GPIO and end GPIO. DSP devices totally have eight GPIOs, which are indicated with number 0-7.
Byte12 is determined according to byte9GPIO direction. The field shall be filled in high (1) /low (0) level for output settings. The
field is a return field to read GPIO level value on devices for input settings.
RS232/RS485:
byte5 byte6
Control Type
Data
Length
Byte5 is 2 when controlling type RS232, and 3 for RS485.
The data length of byte6 refers to data length that shall be sent via RS232/485 currently.
Byte9-132 shall be filled in data sent by RS232/485.
Audio DSP with AEC, 4-in/4-out analog, 4-in/4-out Dante and USB
byte6
Start Channel
byte7 byte8
Reserved Reserved
byte7
Reserved
byte7
End Channel
byte9
GPIO
Direction
byte8 byte9-132
Reserved Data
-29-
byte8
Parameter Type
byte10 byte11
Start GPIO End GPIO
byte9~72
Parameter Value
byte12
Value