SM8521 Datasheet, PDF (42/56 Pages) Sharp Electrionic Components – 8-Bit Single-Chip Microcomputer

Sound Waveform Register
Sound waveform generator can outputs 16-tone
wedge and 32-step sign waveform as shown
below.
SM8521
Step 0 1 2 3 4 5 6 7 8 9 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3
0123456789012345678901
NOTE :
A period of one step is variable based on the value of Time
constant register (SG0, SG1 and SG2 composed of 12 bits).
The period can be lead from the formula shown below.
Period = fCK(n-1)
Period : Time of one step
fCK : System oscillation frequency
n
: Value of Time constant register
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