hcs362 Microchip Technology Inc., hcs362 Datasheet - Page 27

• Manufacturer Part Number: hcs362
• Description: Keeloq Code Hopping Encoder
• Manufacturer: Microchip Technology Inc.

FIGURE 7-2:
FIGURE 7-3:
FIGURE 7-4:
Header
2002 Microchip Technology Inc.
LSB
Bit 0 Bit 1
1
Encrypted Portion
PWM FORMAT SUMMARY (MOD=0)
P1
Bit 30 Bit 31 Bit 32 Bit 33 Bit 58 Bit 59
PWM PREAMBLE/HEADER FORMAT (MOD=0)
PWM DATA FORMAT (MOD = 0)
31
50% Duty Cycle
X
Preamble
T
MSB
E
31xT
Preamble
LSB
E
50% Duty Cycle Preamble
Serial Number
16
10xT
Header
Preliminary
MSB
Fixed Portion of Transmission
E
Bit 60 Bit 61 Bit 62 Bit 63 Bit 64 Bit 65
Encrypted Portion
of Transmission
S3
Function Code
S0
P16
S1
3 or 10xT
S2
LOGIC "0"
LOGIC "1"
of Transmission
E
V
Fixed Portion
Status
LOW
Header
CRC0 CRC1
CRC/TIME
Bit 0 Bit 1
Bit 66
Data Bits
T
HCS362
E
Guard
Bit 67 Bit 68
Time
T
DS40189D-page 27
Q0
T
BP
QUEUE
E
T
Q1
E
Guard
Time