534
CHAPTER 25 SOUND GENERATOR
25.1
Outline of Sound Generator
The Sound Generator consists of the Sound Control register, Frequency Data register,
Amplitude Data register, Decrement Grade register, Tone Count register, PWM pulse
generator, Frequency counter, Decrement counter and Tone Pulse counter.
■
Block Diagram of Sound Generator
Figure 25.1-1 shows a block diagram of the sound generator.
Figure 25.1-1 Block Diagram of Sound Generator
8b
it PWM p
u
l
s
e
Gener
a
tor
Pre
s
c
a
ler
S
1
S
0
Amplit
u
de D
a
t
a
regi
s
ter
CO
EN
PWM
DEC
Clock inp
u
t
Tone P
u
l
s
e
Co
u
nter
EN
CO
CI
Tone Co
u
nt
regi
s
ter
Decrement
Co
u
nter
EN
CO
CI
Decrement Gr
a
de
regi
s
ter
Fre
qu
ency
Co
u
nter
EN
CO
Fre
qu
ency D
a
t
a
Regi
s
ter
CI
Toggle
Flip-flop
EN
D
Q
relo
a
d
1/d
relo
a
d
DEC
TONE
Mix
OE2
S
GA
OE2
S
GO
OE1
OE1
INTE
INT
S
T
IRQ
Содержание MB90390 Series
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Страница 17: ...xiii APPENDIX D List of Interrupt Vectors 690 INDEX 695 ...
Страница 18: ...xiv ...
Страница 132: ...104 CHAPTER 5 CLOCKS ...
Страница 152: ...124 CHAPTER 6 CLOCK MODULATOR ...
Страница 210: ...182 CHAPTER 11 TIME BASE TIMER ...
Страница 218: ...190 CHAPTER 12 WATCHDOG TIMER ...
Страница 264: ...236 CHAPTER 14 16 BIT RELOAD TIMER WITH EVENT COUNT FUNCTION ...
Страница 274: ...246 CHAPTER 15 WATCH TIMER ...
Страница 306: ...278 CHAPTER 17 DTP EXTERNAL INTERRUPTS ...
Страница 338: ...310 CHAPTER 18 8 10 BIT A D CONVERTER ...
Страница 364: ...336 CHAPTER 19 UART0 UART1 ...
Страница 398: ...370 CHAPTER 20 UART2 UART3 Figure 20 5 2 ORE Set Timing Receive data RDRF ORE ...
Страница 432: ...404 CHAPTER 20 UART2 UART3 ...
Страница 482: ...454 CHAPTER 22 SERIAL I O ...
Страница 560: ...532 CHAPTER 24 STEPPING MOTOR CONTROLLER ...
Страница 582: ...554 CHAPTER 27 ROM MIRRORING MODULE ...
Страница 632: ...604 CHAPTER 29 EXAMPLES OF SERIAL PROGRAMMING CONNECTION ...
Страница 722: ...694 APPENDIX ...
Страница 723: ...695 INDEX The index follows on the next page This is listed in alphabetic order ...
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