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2. SYSTEM MESSAGES
System messages are the data related to the overall system of the device.
2.1 System Exclusive Messages
System Exclusive messages control various functions of the CS1x,
including master volume and master tuning, tone generator mode, effect
type and various other parameters.
2.1.1 General MIDI Mode On
When General MIDI mode on is received, the tone generator mode
will be changed to XG mode.
When this happens, the CS1x will receive the MIDI messages which
are compatible with GM System Level 1, and consequently will not
receive NRPN and Bank Select messages.
Since approximately 50ms is required to execute this message, be
sure to leave an appropriate interval before the subsequent
message.
F0 7E 7F 09 01 F7 (Hexadecimal)
2.1.2 Master Volume
When received, the Volume MSB will be effective for the System
Parameter.
F0 7F 7F 04 01 ll mm F7 (Hexadecimal)
* mm(MSB) = appropriate volume value, ll(LSB) = ignored
2.1.3 XG System On
When this data is received, the CS1x will switch to XG mode and all
the parameters will be initialized accordingly, and XG-compatible
messages such as NRPN and Bank Select messages can be
received.
Since approximately 50ms is required to execute this message, be
sure to leave an appropriate interval before the subsequent
message.
F0 43 1n 4C 00 00 7E 00 F7 (Hexadecimal)
*n = device number
TG300B Reset
F0 41 1n 42 12 40 00 7F 00 41 F7 (Hexadecimal)
*n = device number
2.2 Active Sensing (Receive only)
Once FE (Active Sensing) has been received, if no MIDI data is
subsequently received for longer than an interval of approximately
300msec, the CS1x will perform the same function as when All Sounds
Off, All Notes Off, and Reset All Controllers messages are received, and
will then return to a status in which FE is not monitored.
Refer to the MIDI Data Format in the "Data List" book for more information
on the various messages.
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