Eth8x8 Control Interface

Data can be passed from a client to an Eth8x8 through the Eth8x8 Control Interface. Packets are sent from the client to the Eth8x8 through a TCP/IP port. The following rules apply:

• The Eth8x8 shall listen for TCP/IP connections on IP port number 33001
• A maximum of 3 clients can simultaneously connect to the Control Interface port
• All elements of each packet shall be in network byte order

The following sections define the packets that can be sent to the Eth8x8

Data Request

• Each element of the Data Request Packet is a 16 bit integer
• The first 16 bit word of the packet represents the unique identifier and must be equal to 0x100
• A Status Packet with the requested data will be sent back to the client in response to each Data Request

Mixer Control Packet 8 input x 8 output

• Each element of the Mixer Control Packet is a 16 bit unsigned integer
• The first 16 bit word of the packet represents the unique identifier and must be equal to 0x808

• Each Mixer Control element is a gain value represented by a fixed point integer in 2.14 format
• For example:
• use 0x8000 to set the gain to 2.0 (+6dB)
• use 0x4000 to set the gain to 1.0 (0dB)
• use 0x2000 to set the gain to 0.5 (-6dB)
• use 0 to mute
• Care must be taken when using values greater than 1 to avoid over-amplification resulting in clipping of the resultant signal