AN2777 Freescale Semiconductor / Motorola, AN2777 Datasheet - Page 12

• Manufacturer Part Number: AN2777
• Description: Tango3 Monitor for the MC9S08RG60 MCU
• Manufacturer: Freescale Semiconductor / Motorola

RF Message Formats
1
1
0
0
1
t
1 bit time
Figure 8. Manchester Encoding Of Data
The Tango3 monitor also can also construct RF messages without Manchester encoding using the H and
L fields.
Figure 9
shows an example.
L
H
H
L
H
t
1 bit time
Message = 01101
Figure 9. Data Encoding Using the H and L Fields
Examples
Transmitting an OOK Message Without Header
Below is an example of sending an OOK modulated message consisting of a Preamble, ID byte, eight bits
of data, and an EOM. The data rate is 2400 bits per second.
To send an OOK data frame with ID 0x2a (00101010 binary), one data byte of 0xf0 (11110000 binary):
Tango3 Monitor for the MC9S08RG60 MCU, Rev. 0
12
Freescale Semiconductor