參數(shù)資料
型號: MC68HC05F4FB
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 1.789 MHz, MICROCONTROLLER, PQFP44
封裝: QFP-44
文件頁數(shù): 97/130頁
文件大小: 2089K
代理商: MC68HC05F4FB
MC68HC05F4
MOTOROLA
7-3
DTMF/MELODY GENERATOR
7
Figure 7-1 DTMF/melody generator (DMG) block diagram
Row
frequency
divider
PLA
scanner
Sine wave
PLA
28 x 6 bit
Sine/square
wave
select
6-bit
resistor
ladder
MUX
Row
frequency
divider
PLA
scanner
Sine wave
PLA
28 x 6 bit
Sine/square
wave
select
6-bit
resistor
ladder
High group
pre-emphasis
TNOE
FCR register
FCC register
Data
validator
STOP
MS1
MS0
TGER
TGEC
TNO
Tristate
control
+
msb
lsb
TNX
5
6
Current summer
active low pass
lter
+
3.58 MHz/2
TPG
65
05F4Book Page 3 Tuesday, August 5, 1997 1:10 pm
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