參數(shù)資料
型號: DTMFDECODER-RD
廠商: Silicon Laboratories Inc
文件頁數(shù): 44/178頁
文件大?。?/td> 0K
描述: KIT REF DESIGN DTMF DECODER
應用說明: DTMF Decoder Ref Design AppNote
標準包裝: 1
主要目的: 電信,DTMF 解碼器
嵌入式:
已用 IC / 零件: C8051F300
主要屬性: 8kHz 采樣速率模數(shù)轉換器
次要屬性: 16 個 Goertzel 濾波器
已供物品: 板,軟件
產品目錄頁面: 627 (CN2011-ZH PDF)
相關產品: 336-1535-5-ND - IC 8051 MCU 8K FLASH 14-SOIC
C8051F300-GMR-ND - IC 8051 MCU 8K FLASH 11QFN
336-1245-ND - IC 8051 MCU 8K FLASH 11QFN
其它名稱: 336-1283
Table 14.1. Timer Settings for Standard Baud Rates Using The Internal 24.5 MHz
Oscillator
Frequency: 24.5 MHz
SYS
CLK
from
Internal
Osc.
230400
–0.32%
106
SYSCLK
XX2
1
0xCB
115200
–0.32%
212
SYSCLK
XX2
1
0x96
57600
0.15%
426
SYSCLK
XX2
1
0x2B
28800
–0.32%
848
SYSCLK / 4
01
0
0x96
14400
0.15%
1704
SYSCLK / 12
00
0
0xB9
9600
–0.32%
2544
SYSCLK / 12
00
0
0x96
2400
–0.32%
10176
SYSCLK / 48
10
0
0x96
1200
0.15%
20448
SYSCLK / 48
10
0
0x2B
Notes:
1. SCA1-SCA0 and T1M bit definitions can be found in
2. X = Don’t care.
Table 14.2. Timer Settings for Standard Baud Rates Using an External 25 MHz
Oscillator
Frequency: 25.0 MHz
SYSCLK
from
External
Osc.
230400
–0.47%
108
SYSCLK
XX2
1
0xCA
115200
0.45%
218
SYSCLK
XX2
1
0x93
57600
–0.01%
434
SYSCLK
XX2
1
0x27
28800
0.45%
872
SYSCLK / 4
01
0
0x93
14400
–0.01%
1736
SYSCLK / 4
01
0
0x27
9600
0.15%
2608
EXTCLK / 8
11
0
0x5D
2400
0.45%
10464
SYSCLK / 48
10
0
0x93
1200
–0.01%
20832
SYSCLK / 48
10
0
0x27
SYS
CLK
from
Int
e
rn
al
Osc.
57600
–0.47%
432
EXTCLK / 8
11
0
0xE5
28800
–0.47%
864
EXTCLK / 8
11
0
0xCA
14400
0.45%
1744
EXTCLK / 8
11
0
0x93
9600
0.15%
2608
EXTCLK / 8
11
0
0x5D
Notes:
1. SCA1–SCA0 and T1M bit definitions can be found in
2. X = Don’t care
C8051F300/1/2/3/4/5
138
Rev. 2.9
Target
Baud Rate
(bps)
Baud Rate
% Error
Oscillator
Divide
Factor
Timer Clock
Source
SCA1–SCA0
(pre-scale
select)1
T1M1
Timer 1
Reload
Value (hex)
Target
Baud Rate
(bps)
Baud Rate
% Error
Oscillator
Divide
Factor
Timer Clock
Source
SCA1–SCA0
(pre-scale
select)1
T1M1
Timer 1
Reload
Value (hex)
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