hcs362 Microchip Technology Inc., hcs362 Datasheet - Page 11

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

FIGURE 3-5:
With XSER = 1, CTSEL = 0
With XSER = 1, CTSEL = 1
With XSER = 0, CTSEL = 1
2002 Microchip Technology Inc.
Q1 Q0 C1 C0
With XSER = 0, CTSEL = 0
Q1 Q0 T1 T0
Q1 Q0 T1 T0
Q1 Q0 C1 C0
2 bits
2 bits
QUE
QUE
2 bits
QUE
2 bits
QUE
Status Information
Status Information
Status Information
Status Information
(5 bits)
(5 bits)
(5 bits)
2 bits
TIME
2 bits
CRC
TIME
2 bits
(5 bits)
2 bits
CRC
CODE WORD DATA FORMAT
V
V
V
1-bit
1-bit
1-bit
V
LOW
LOW
LOW
1-bit
S2 S1 S0
LOW
S2 S1 S0
4 bits
BUT
4 bits
BUT
Fixed Portion (32 bits)
Fixed Portion (32 bits)
S3
Fixed Portion (32 bits)
Fixed Code Portion (32 bits)
S3
SERIAL NUMBER
SERIAL NUMBER
(32 bits)
SERIAL NUMBER
(32 bits)
SERIAL NUMBER
(28 bits)
(28 bits)
Preliminary
S2
S2
S2
S2
S1
S1
S1
S1
S0 S3
S0 S3
S0 S3
S0 S3
4 bits
4 bits
4 bits
BUT
BUT
BUT
4 bits
BUT
Overflow
Overflow
Overflow
Counter
Counter
Counter
Overflow
Counter
OVR1
2 bits
OVR1
OVR1
2 bits
2 bits
OVR1
2 bits
Encrypted Portion (32 bits)
Encrypted Portion (32 bits)
Encrypted Portion (32 bits)
Encrypted Portion (32 bits)
Transmission Direction LSB First
OVR0
OVR0
OVR0
10 bits
10 bits
10 bits
OVR0
DISC
DISC
DISC
10 bits
DISC
15
15
15
15
Synchronization
HCS362
Synchronization
Synchronization
Synchronization
DS40189D-page 11
Counter
Counter
Counter
16 bits
16 bits
16 bits
Counter
16 bits
0
0
0
0