HCS362-I Datasheet, PDF (28/38 Pages) Microchip Technology – KEELOQ Code Hopping Encoder

HCS362
FIGURE 7-5: MANCHESTER FORMAT SUMMARY (MOD=1)
12
50% Duty Cycle
Preamble
START bit bit 0 bit 2
bit 1
16
LOGIC "0"
TPB
TE TE
LOGIC "1"
STOP bit
FIGURE 7-6:
31XTE
Preamble
4XTE
Header
Encrypted Portion
of Transmission
Fixed Portion
of Transmission
MANCHESTER PREAMBLE/HEADER FORMAT (MOD=1)
Guard
Time
P1
31 x TE Preamble
P16
Bit 0 Bit 1
4 x TE
Data Word
Header Transmission
DS40189D-page 28
Preliminary
© 2002 Microchip Technology Inc.