Block diagram – FUJITSU MB91460 SERIES FR60 User Manual
Page 880
864
Chapter 42 Sound Generator
2.Block Diagram
2. Block Diagram
8bit PWM pulse
Generator
Prescaler
S1 S0
Amplitude Data
register
CO
EN
PWM
DEC
CLKP
Tone Pulse
Counter
EN
CO
CI
Tone Count
register
Decrement
Counter
EN
CO
CI
Decrement
Grade register
Frequency
Counter
EN
CO
Frequency
register
CI
Toggle
flip-flop
EN
D
Q
reload
1/d
reload
DEC
TONE
Mix
SGA
SGO
INTE INT
ST
IRQ
S2
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