Microchip Technology PRO MATE II, Manual

Page: 33 / 48


1999 Microchip Technology Inc. DS30243H-page 29
Chapter 3. Programming K
EE
L
OQ
®
Devices
Auto Shutoff Timer If this bit is enabled, the encoder will automatically
shutoff after about a time (dependent on the
transmission speed) preventing the battery of a
transmitter going flat if the transmitter is accidentally
pressed in a pocket or handbag.
Counter Overflow If this is enabled, the overflow bit will be set.
Table 3.8: Baud Rate Select
Option
Modulation Format
PWM Manchester
400 uS or 800 uS 400 µs Basic Pulse Width
(BPW) 800 µs BPW.
200 uS Long or
400 uS Long
Time Out 200 µs BPW with a time-
out value of about 30s if
time-out is enabled. 400 µs BPW with a time-
out value of about 60s if
time-out is enabled.
200 uS Short or
400 uS Short
Time Out 200 µs BPW with a time-
out value of about 15s if
time-out is enabled. 400 µs BPW with a time-
out value of about 20s if
time-out is enabled.
100 uS or 200 uS 100 µs BPW. 200 µs BPW.
Table 3.9: Options Automatically Set – HCS360
Option Set To
SYNC_A Counter set to 0
SEED_0,
SEED_1, SEED2 The 48-bit SEED is a randomly generated number.
SEED The SEED bit in the configuration word is set if a
decoder that uses secure learn is selected.
IND The IND bit in the configuration word always cleared
disabling independent mode.
USRA0, USRA1 The USRA bits in the configuration words are set equal
to the serial number bits 9 and 10 extending the
discriminator to 10 bits.
USRB0, USRB1 The USRB bits in the configuration word are set to 00.
XSER The XSER bit in the configuration word is always set to
00.
TMPSD The TMPSD bit in the configuration word is always set
to 0.
Table 3.7: Selectable Options – HCS360 (Continued)
Option Description