RFHCS362G_11 Datasheet, PDF (16/54 Pages) Microchip Technology – KEELOQ® Code Hopping Encoder with UHF ASK/FSK Transmitter

rfHCS362G/362F
FIGURE 3-6: CODE WORD DATA FORMAT
With XSER = 0, CTSEL = 0
Status Information
(5 bits)
Fixed Code Portion (32 bits)
QUE CRC VLOW BUT
2 bits 2 bits 1-bit 4 bits
SERIAL NUMBER
(28 bits)
Encrypted Portion (32 bits)
Counter
BUT Overflow
4 bits 2 bits
DISC
10 bits
Synchronization
Counter
16 bits
15
0
Q1 Q0 C1 C0 S2 S1 S0 S3
S2 S1 S0 S3 OVR1 OVR0
With XSER = 1, CTSEL = 0
Status Information
(5 bits)
QUE CRC VLOW
2 bits 2 bits 1-bit
Fixed Portion (32 bits)
SERIAL NUMBER
(32 bits)
Encrypted Portion (32 bits)
Counter
BUT Overflow
4 bits 2 bits
DISC
10 bits
Synchronization
Counter
16 bits
15
0
Q1 Q0 C1 C0
S2 S1 S0 S3 OVR1 OVR0
With XSER = 0, CTSEL = 1
Status Information
(5 bits)
Fixed Portion (32 bits)
QUE TIME VLOW BUT
2 bits 2 bits 1-bit 4 bits
SERIAL NUMBER
(28 bits)
Encrypted Portion (32 bits)
Counter
BUT Overflow
4 bits 2 bits
DISC
10 bits
Synchronization
Counter
16 bits
15
0
Q1 Q0 T1 T0 S2 S1 S0 S3
S2 S1 S0 S3 OVR1 OVR0
With XSER = 1, CTSEL = 1
Status Information
(5 bits)
QUE TIME VLOW
2 bits 2 bits 1-bit
Q1 Q0 T1 T0
Fixed Portion (32 bits)
SERIAL NUMBER
(32 bits)
Encrypted Portion (32 bits)
Counter
BUT Overflow
4 bits 2 bits
DISC
10 bits
Synchronization
Counter
16 bits
15
0
S2 S1 S0 S3 OVR1 OVR0
Transmission Direction LSB First
DS41189B-page 16
© 2011 Microchip Technology Inc.