參數(shù)資料
型號: ST7FDALIF2M6
廠商: 意法半導體
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位單電壓閃存存儲器,數(shù)據(jù)EEPROM,模數(shù)轉(zhuǎn)換器,定時器,SPI和大理微控制器
文件頁數(shù): 75/141頁
文件大?。?/td> 2175K
代理商: ST7FDALIF2M6
ST7DALI
75/141
DALI COMMUNICATION MODULE
(Cont’d)
In the example shown in
Figure 44
, the DCMC-
SR[3:0] bits are updated automatically at each
edge trigger (DALI signal change of phase). At the
same time the value of the 4-bit sample clock
counter is reset. By reading the DCMCSR[3:0] bits
software can detect changes in the DALI signal
pulse length.
Figure 44. Example of DALI Signal Sampling
DALI Signal
Edge Trigger
t
CPU
t
CPU
t
CPU
4-bit sample
clock counter
(/16 divider)
0000
0001
1111
0000
xxxx
0000
0000
1111
xxxx
DCMCSR[3:0]
bits
t
CPU
=f
CPU
m = (DCMCLK integer value+1) x t
CPU
m
1
f
DALI
= 1.2 kHz
f
CPU
= 8 MHz
N = 207 (DCMCLK)
t
CPU
= 125ns
m = 26 μs (208 x 125ns)
Example:
Legend:
833.33μs
1
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