參數(shù)資料
型號： W925E625
英文描述： Telephone Controller
中文描述： 電話控制器
文件頁數(shù)： 55/71頁
文件大小： 1055K
代理商： W925E625
W925E/C625
8-bit CID Microcontroller
counting of tone absent time is similar to the counting of tone present time but the falling edge of
ALGR/ ALGO replaces the rising edge and the CASAT replaces the CASPT. The bit ALGO is
controlled by hardware only. The flag ALGOF is set by rising edge of ALGO and cleared by
software.
Vin
Dual Alert Tone Signal
Revision : A6
-55-
Release Date : 2002/7/2
ALGR
t
DP
t
GP
t
DA
t
GA
*
1: Guard time timer is reset and starts to up count from 00H.
2: Guard time timer is reset and starts to up count from 00H.
3: The content of the guard-time timer reaches the content of ASPT/ASAT.
t
REC
t
ABS
1
2
3
3
*ALGR is an internal signal in the uC.
+ Clear by software.
Figure 6-21 Guard Time Waveform of Alert Tone Signal Detection
DTMF Decoder
The DTMF decoder shares the same input pre-processor with FSK decoder. The dual tone is
separated into low group and high group by two SCFs (switched capacitor filter. The method of
DTMF detection is the same as alert tone detection. The present/absent guard time is adjusted by
registers DTMFPT/DTMFAT. As the DTMF signal is recognized and decoded, the bit DTMFD will
be set and the decoded DTMF data is stored in bit0 to bit3 of register DTMFDR. The rising edge
of DTMFD produces the flag DTMFDF. The bit DTMFD is controlled by hardware only. The flag
DTMFDF is set by rising edge of DTMFD and cleared by software.
ALGO
ALGOF
+
1
t
DP
t
DA
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相關代理商/技術參數(shù)
參數(shù)描述
W925E625FG 功能描述:IC MCU 8-BIT W/CID 160-PQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W925 標準包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉換器:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR)
W925EP01 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT CID MICROCONTROLLER
W925EP01FG 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT CID MICROCONTROLLER
W925G240 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT CID MICROCONTROLLER
W925G625 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-bit CID MICROCONTROLLER
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