HCS370 Datasheet, PDF (9/36 Pages) Microchip Technology – KEELOQ Code Hopping Encoder

HCS370
TABLE 3-2: ENCODER2 OPTIONS (SHIFT = 1)
Symbol Address₁₆:Bits
Description⁽¹⁾
KEY2
34: 64 bits Encoder Key
SEED2
2A: 60 bits Encoder Seed Value
SYNC2
08: 20 bits
08: 18 bits
Encoder Synchronization Counter (CNTSEL=1)
Encoder Synchronization Counter (CNTSEL=0) plus overflow
SER2
26: 32 bits Encoder Serial Number
DISC2
32: 10 bits Encoder Discrimination value
MSEL2
32: ---- 32-- Transmission Modulation
Format
Value₂
00
Format
PWM
01
Manchester
10
VPWM
11
PPM
HSEL2
32: ---4 ---- Header Select
4 TE = 0
10 TE = 1
XSER2
32: --5- ---- Extended Serial Number
28 bits = 0
32 bits = 1
QUEN2
32: -6-- ---- Queue counter Enable
Disable = 0
Enable = 1
STEN2
32: 7--- ---- START/STOP Pulse Enable
Disable = 0
Enable = 1
LEDBL2
LEDOS2
3D: -6-- ----
3D: 7--- ----
Low Voltage LED Blink
LED On Time Select⁽¹⁾
Never = 0
50 ms = 0
Once = 1
100 ms = 1
SDLM2
3E: ---- ---0 Limited Seed
Disable = 0
Enable = 1
SDMD2
3E: ---- --1- Seed Mode
User = 0
Production = 1
SDBT2
SDTM2
2A: 7654 ---- Seed Button Code
3E: ---- 32-- Time Before Seed Code word⁽¹⁾
Value₂
00
Time (s)
0.0
01
0.8
10
1.6
11
3.2
BSEL2
3E: --54 ---- Transmission Baud Rate
Select⁽¹⁾
Value₂
00
TE (µs)
100
01
200
10
400
GSEL2
3E: 76-- ---- Guard Time Select⁽¹⁾
11
Value₂
00
800
Time (ms)
2 TE
01
6.4
10
51.2
11
102.4
Note 1: All Timing values vary ±10%.
Reference
Section
3.2.1
3.3
3.2,
3.2.1
3.2, 3.2.2
3.2, 3.2.1
4.1
4.1
3.2
5.6
4.1
5.3
5.3
3.3
3.3
3.3
3.3
4.1
4.1, 5.2
TABLE 3-3: DEVICE OPTIONS
2002 Microchip Technology Inc.
Preliminary
DS41111D-page 9