Yamaha DX21 - Manual (Page 44)

4. Reception Data
All MIDI data is received when the MIDI ON/OFF function is ON. When a specific
MIDI receive channel has been selected using the MIDI RECV CH function, and
the OMNI mode is OFF, MIDI data will be received only on the specified channel.
MIDI data will be received on all channels when the OMNI mode is ON.
4-1. CHANNEL INFORMATION
4-1-1. Channel Voice Message
(1) Key off
Status
Note no.
Velocity
(2) Key On/Off
1000nnnn
0kkkkkkk
0vvvvvvv n=channel no.
k=0(C-2) ~ 127 (G8)
v is ignored
Status
Note no.
Velocity
1001nnnn
0kkkkkkk
0vvvvvvvv n=channel no.
k=0(C-2) ~ 127(G8)
v=0: key off
v=1 ~127: key on
The key on note level will vary according to the received velocity value. The range
of this instrument is C-1 to B6. If a higher or lower key number is received, it will
be output within the range limits. For example, received C7 through B7 data will
be output as notes in the C6 through B6 range.
(3) Control Change
Status
Control no.
Control code 1011nnnn
0ccccccc
0vvvvvvv n=channel no.
a) Received whether MIDI CH INFO is ON or OFF
Control no.
C=64: Sustain
SW .
Control no.
C=1: modulation wheel
C=2: breath control
C=5: portamento time
C=6: data entry slider
C=7: foot volume
C=65: portamento
SW .
Control code
V=0:OFF, 127:ON
Control code
V=0~127
V=0~127
V=0~127
V=0~127
V=0~127
V=0:OFF, 127:ON
(4) Program Change
Status
Program no.
1100nnnn
0ppppppp
n=channel no.
Received only when MIDI CH INFO is ON. If received during the PLAY or PER-
FORMANCE mode the voice or performance number will be changed accordingly.
The lower five bits of the program no. contain the voice or performance number.
(5) Pitch Bend
Status
Code (LSB)
Code (MSB) 1110nnnn
0uuuuuuu
0vvvvvvv
n=channel no.
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