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| 型號(hào)： | W742S81A |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4-BIT, FLASH, 3.58 MHz, MICROCONTROLLER, PQFP100 |
| 文件頁(yè)數(shù)： | 31/47頁(yè) |
| 文件大小： | 242K |
| 代理商： | W742S81A |
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W742S81A
Publication Release Date: March 2003
- 31 -
Revision A1
Figure 6-13 The relation between the touch tone keypad and the frequency
6.20.1 DTMF register
DTMF register is organized as 4-bit binary register. By controlling the DTMF register, one tone of the
low/high group can be selected. The MOV DTMF,R instruction can specify the wanted tones. The bit
descriptions are as follows:
3
Note: W means write only.
W
W
W
W
0
1
2
DTMF
b3
X
X
X
X
0
0
1
1
b2
X
X
X
X
0
1
0
1
b1
0
0
1
1
X
X
X
X
b0
0
1
0
1
X
X
X
X
Selected tone
1209 Hz
1336 Hz
1477 Hz
1633 Hz
697 Hz
770 Hz
852 Hz
941 Hz
High
group
Low
group
Note: X means this bit do not care.
6.20.2 Dual Tone Control Register (DTCR)
Dual tone control register is organized as 4-bit binary register. The output of the dual or single tone will be
controlled by this register. The MOV DTCR,#I instruction can specify the wanted status. The bit
descriptions are as follows:
2
3
Note: W means write only.
Bit 0 = 1 Low group tone output is enabled.
Bit 1 = 1 High group tone output is enabled.
Bit 2 = 1 DTMF output is enabled. When Bit 2 is reset to 0, the DTMF output pin will be Hi-Z state.
Bit 3 is reserved.
W
W
W
0
1
DTCR
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W742S82A | 4-BIT TELEPHONE CONTROLLER |
| W74IE20X | 4-BIT FLASH MICROCONTROLLER |
| W741E202 | 4-BIT FLASH MICROCONTROLLER |
| W741E203 | 4-BIT FLASH MICROCONTROLLER |
| W741E204 | 4-BIT FLASH MICROCONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W742S82A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:4-BIT TELEPHONE CONTROLLER |
| W7-48D12 | 制造商:INTRONICS 制造商全稱:INTRONICS 功能描述:DC/DC MODULES |
| W7-48D15 | 制造商:INTRONICS 制造商全稱:INTRONICS 功能描述:DC/DC MODULES |
| W7-48D5 | 制造商:INTRONICS 制造商全稱:INTRONICS 功能描述:DC/DC MODULES |
| W7-48S12 | 制造商:INTRONICS 制造商全稱:INTRONICS 功能描述:DC/DC MODULES |
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