LRI64-W4/2GE STMicroelectronics, LRI64-W4/2GE Datasheet - Page 12
LRI64-W4/2GE
Manufacturer Part Number
LRI64-W4/2GE
Description
Manufacturer
STMicroelectronics
Datasheet
1.LRI64-W42GE.pdf
(49 pages)
Specifications of LRI64-W4/2GE
Operating Temperature (max)
85C
Operating Temperature Classification
Commercial
Lead Free Status / RoHS Status
Not Compliant
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Data rate and data coding
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Data rate and data coding
The data coding method involves pulse position modulation. The LRI64 supports the “1-out-
of-4” pulse coding mode. Any request that the VCD might send in the “1-out-of-256” pulse
coded mode, is ignored, and the LRI64 remains in its current state.
Two bit values are encoded at a time, by the positioning of a pause of the carrier frequency
in one of four possible 18.88 µs (256/f
Four successive pairs of bits form a byte. The transmission of one byte takes 302.08 µs and,
consequently, the data rate is 26.48 Kbit/s (f
The encoding for the least significant pair of bits is transmitted first. For example
shows the transmission of E1h (225d, 1110 0001b) by the VCD.
Figure 6.
Pulse position for "00"
Pulse position for "01" (1=LSB)
Pulse position for "10" (0=LSB)
Pulse position for "11"
9.44 µs
“1-out-of-4” coding mode
9.44 µs
28.32 µs
C
9.44 µs
) time slots, as shown in
C
/512).
75.52 µs
75.52 µs
75.52 µs
75.52 µs
47.20µs
9.44 µs
Figure
66.08 µs
6.
Figure 5
9.44 µs
AI06658
LRI64
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