參數(shù)資料
型號： LRI512-C40
廠商： 意法半導體
元件分類： DRAM
英文描述： EEPROM
中文描述： EEPROM的
文件頁數(shù)： 6/54頁
文件大小： 351K
代理商： LRI512-C40
LRI512
6/54
Data Coding Mode: 1 Out of 4
The value of 2 bits is represented by the position
of one pause. The position of the pause on 1 of 4
successive time periods of 18.88 μs (256/f
C
), de-
termines the value of the 2 bits. Four successive
pairs of bits form a byte, where the least significant
pair of bits is transmitted first.
In this case the transmission of one byte takes
302.08 μs and the resulting data rate is 26.48 kbit/
s (f
C
/512). Figure 7 illustrates the 1 out of 4 pulse
position technique and coding.
Figure 7. 1 Out of 4 Coding Mode
For example Figure 8 shows the transmission of
E1h (225d, 1110 0001b) by the VCD.
Figure 8. 1 Out of 4 Coding Example
AI06658
9.44 μs
9.44 μs
75.52 μs
28.32 μs
9.44 μs
75.52 μs
47.20μs
9.44 μs
75.52 μs
66.08 μs
9.44 μs
75.52 μs
Pulse position for "00"
Pulse position for "11"
Pulse position for "10" (0=LSB)
Pulse position for "01" (1=LSB)
AI06659
75.52 μs
75.52 μs
75.52 μs
75.52 μs
00
10
01
11
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