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Using the K EE L OQ 3 Development Kit MPLAB Plug-In
.
TABLE 3-2:
PIC16F636 TRANSMITTER CONFIGURATION TRADITIONAL K EE L OQ OPTIONS
Configuration Option
Encryption Key
Serial Number
Auto Increment
28-bit or 32-bit radio
buttons
Modulation Format
Baud Rate
Header Length
Guard Time
Low Voltage LED Blink
LED On Time
Overflow Bits
SEED
SEED Button
SEED Trigger
Time before SEED
Production SEED
Limited SEED
Sync Counter
Discrimination Value
Description
Selects key generation algorithm.
Enter a 28-bit or a 32-bit hex value depending on the 28 or 32-bit selection below the serial
number box.
This will cause the serial number field to increment if an encoder is programmed
successfully.
If 32-bit is selected, 32-bit serial numbers can be used. If 28-bit is selected, only 28-bit
serial numbers can be used. Also, if the current serial number has more than 28 bits, it is
automatically adjusted to 28 bits.
There are four modulation formats: PWM, Manchester, VPWM, and PPM.
T E value used during transmissions. There are four baud rates: 100 μ s, 200 μ s, 400 μ s,
and 800 μ s.
Select the header time frame as either 4xT E or 10xT E .
Extending the guard time can be used to lower the average power transmitted during a
period of time; to help meet regulatory requirements.
If set to Once, the transmitter ’s LED blinks only once if a low battery condition is detected.
Allows selection of the LED blink timing.
Select the overflow cycles for the synchronous counters.
The Seed is a 60-bit value that can be either random (recommended for Secure Learn
methods) or an arbitrary 60-bit value. It will be transmitted in place of the hopping code and
fixed code portions of the code word when the predetermined Seed function code (button)
is activated.
This field determines what function code will produce an immediate or delayed Seed
transmission.
This field determines what function code will produce an immediate or delayed Seed
transmission.
Determines if and when a delayed Seed transmission will be activated by the Seed Button
function code.
If enabled, the Seed mode is set to Production mode. If disabled, it is set to User mode.
If enabled, disables the Seed transmission when the synchronization counter reaches 80
hex (128).
Depending on the Counter Select option enter a 16-bit of a 20-bit sync counter. This is the
starting point of the sync counter.
You can opt for the default setting equal to the 10 LSbs of the serial number or enter an
arbitrary 10-bit value (0 through 3FF).
Start/Stop Pulse Enable If enabled, this option adds a Start bit (1) to the code word after the synchronization header
and a Stop bit (1) after the last Status bit (end of the code word).
Queue Counter Enable
Time-Out
Low Voltage Select
Wake-Up Select
PLL Interface Select
Minimum Code Words
Activates the Queue status bits functionality. This allows an application to distinguish
between single, double, triple and quadruple button presses.
If enabled, the device will shut off after transmitting continuously for a predetermined time.
This prevents a complete battery discharge if an accidental input.
Selects the voltage at which the VLOW flag (bit) is set in a transmission.
Selects the length and duty cycle of an optional extra Wake-Up preamble, transmitted
before the first code word.
Choose between ASK and FSK for the PLL Interface.
Used to select the minimum number of code words transmitted when the device is
activated.
? 2009 Microchip Technology Inc.
DS41378A-page 21
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