Lexicon MC-12 - Application Notes and Examples; 1.1 Box Initializations; 1.2 Getting System Wide Status and Setup; 1.3 Downloading the System Setup to the MC-12

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MC-12 Serial Communications Protocol Printed on: 07/13/05

Application Notes and Examples

1.1 Box initializations:

1.1.1 MC-12:

When the MC-12 is powered on it will initialize the serial port and then transmit the DC_WAKEUP

Packet, and look for an ACK from the HOST. Currently, if an ACK is not received, the MC-12 continues

to operate. This message is mostly for the HOST to know if the MC-12 is in an operational state.

1.1.2 HOST:

When the HOST issues a HOST_WAKEUP Packet the MC-12 responds with an ACK and then transmits

the current FPD buffer with a DC_FPD notification. If the Host issues a HOST_WAKEUP command and

does not receive the ACK it should assume it is not connected or the MC-12 is not capable of responding

on the RS232 and therefore further serial communications will not be possible. If the MC-12 RS232 is

capable of communicating, the MC-12 will respond to a HOST_WAKEUP Command in any “Powered

up” state including standby.

1.2 Getting System Wide Status and Setup:

TBD

1.3 Downloading the System Setup to the MC-12:

TBD

1.4 Simple System Control & System Status:

The HOST can control the system via the IR commands thus making any direct IR code a direct command.

Because of some limitations in the IR codes the HOST also has direct control over the system volume,

balance, fader, effect selection, zone 2 volume, balance and input selection through dedicated commands.

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