Lexicon MC-12 用户指南

Lexicon
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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