參數(shù)資料
型號: MB90653APFV
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: Scan Test Devices With Octal Bus Transceivers And Registers 28-CDIP -55 to 125
中文描述: 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP100
封裝: PLASTIC, LQFP-100
文件頁數(shù): 70/120頁
文件大小: 1690K
代理商: MB90653APFV
70
MB90650A Series
16. DTMF Generator
The DTMF (dual tone multifrequency) generator is a module that can generate a series of audio tones as heard
from a push-button telephone or a radio transceiver with a keypad. It has the following features:
Capable of generating DTMF tones continuously (or even a single tone)
Capable of generating all CCITT tones: 0 to 9, *, #, A to D
(1) Register list
(2) Block diagram
DTMF control register (DTMC)
Address : 000088
H
CSL2
CSL1
CSL0
CDIS
RDIS
OUTE
R/W
Initial value
00000000
B
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
R/W
R/W
R/W
R/W
R/W
DTMF data register (DTMD)
Address : 000089
H
DDAT3 DDAT2 DDAT1
R/W
Initial value
000X0000
B
bit 15
bit 14
bit 13
bit 12
bit 11
bit 10
bit 9
bit 8
R/W
R/W
R/W
: Read/write enabled
: Unused
X :
Undefined
DDAT0
R/W
DTMF
Internal clock
Frequency divider
ROW/COL
decoder
Preset counter
DTMF data register (DTMD)
Clock pulse
Frequency
select
Frequency
select
Terminate
Control signal generator
Count clock
COL staircase
generator
ROW staircase
generator
DTMF control register (DTMC)
Internal bus
Voltage data
Adder
Frequency
divider
Frequency
select
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