YMF795 datasheet(13/45 Pages) YAMAHA

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YMF795

-13-

Rest data

Default: 0000h

Index

b15

b14

b13

b12

b11

b10

$00h

CH1 CH0

VCHE TI3

TI2

TI1

TI0

VCH2 VCH1VCH0

CH1 - CH0 : Part setting

Using CH1 or 0 bit, set the part of each rest.

CH[1:0]

Part designation

00b

01b

10b

11b

TI3 - TI0 : Interval setting

These bits are used to set the interval time before the processing of the next note and rest.

The interval “48” represents the time for the whole note.

The following table is exactly the same as that for the note data.

TI [3:0]

Interval

VCHE, VCH2 – VCH0 : Timbre change function

Although the maximum number of timbres that can be simultaneously used is four, the timbre can be changed during

sound reproduction by setting these bits. Set VCHE to “1” and set a timbre number by using VCH2 to VCH0.

Switching of timbre in rest data is made according to the designated time of the sequence data. After the next note to

generate, the timbre in a part specified by CH0 and CH1 will be changed.

Make the change of a timbre after sound generation of a part to change is completely stopped.

The state at which sound generation is completely stopped is not a state where TK (sound length) is ended but a state

where release time of envelope is completed.

Note that unusual sound may be instantaneously generated if switching the timbre while sound generation is not

completely stopped.

If the timbre allocation is changed by using this function, the $30h register itself will be rewritten.

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