參數(shù)資料
型號(hào)： ST7DALI
廠商： 意法半導(dǎo)體
元件分類： ADC
英文描述： 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI, DALI
中文描述： 8位單電壓閃存存儲(chǔ)器，數(shù)據(jù)EEPROM，模數(shù)轉(zhuǎn)換器，定時(shí)器，SPI和大理微控制器
文件頁數(shù)： 74/141頁
文件大?。?/td> 2175K
代理商： ST7DALI
ST7DALI
74/141
1
DALI COMMUNICATION MODULE
(Cont’d)
11.4.10 Bi-phase Bit Detection
The clock used for sampling the DALI signal is pro-
grammed by the DCMCLK register. Each bit
phase is sampled 16 times. The bit phase level is
determined by two of three sample clock pulses
(pulses 6,7,8). The two phase levels of the bi-
phase bit are shifted into the 4-bit pre-shift register
at the 9th sample clock pulse.
Only the second phase level of the bi-phase bit is
shifted into the 16-bit shifter.
The 4-bit pre-shifter is used to detect any errors in
the received frame.
When a change of phase is detected (edge trig-
ger), the 4-bit sample clock counter (integer range
0 to15) is cleared.
Figure 43. DALI Signal Sampling
DALI Signal
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Phase Detector
Shifter Clock
Edge Trigger
4-bit Pre-shifter
x
0
01
4-bit sample clock counter
16-bit Shifter
xxxx
xxx1
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ST-7EA 100k(104) 制造商:Copal Electronics 功能描述:100k }20% (B) }100ppm/ 0.25W/70 0W/125 6.4~3.4~6.1mm +125 -55 6.4mm 3.4mm 6.1mm
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