LFSR
37 – LFSR pseudo-random sequences
D Q
T
D Q
T
D Q
T
D Q
T
D Q
T
D Q
T
D Q
T
Clock
Out
Shift register
EXOR gate
LFSR ≡ Linear-Feedback Shift Register
2m-1 ones and 2m-1-1 zeros
arranged in groups of
1X m ones, m-1 zeros
1X m-2 ones and zeros
2X m-3 ones and zeros
4X m-4 ones and zeros
.................
2m-5 groups 111 and 000
2m-4 groups 11 and 00
2m-3 individual 1 and 0
D Q
T
D Q
T
Sound and appear as white noise!