HCS362_11 Datasheet, PDF (32/46 Pages) Microchip Technology – KEELOQ® Code Hopping Encoder Non-volatile synchronization data

HCS362
FIGURE 8-5: 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 8-6:
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
DS40189E-page 32
© 2011 Microchip Technology Inc.