MC68181 Datasheet, PDF (31/119 Pages) Freescale Semiconductor, Inc – Advance Information ROAMING FLEX chip SIGNAL PROCESSOR

Freescale Semiconductor, Inc.
MC68181
FLEX Frame Structure
The 1600 bps rate is transmitted as a single phase of information (A), as shown in
Figure A-2 on page A-3, at 1600 symbols per second using 2-level Frequency Shift
Keyed (FSK) modulation.
One Cycle = 4 Minutes
Frame Frame Frame Frame Frame Frame
127
0
1
2
3
4
Frame Frame Frame
125 126 127
One Frame = 1.875 s.
Sync 1 ^Frame Sync 2
Info
Block 0
Word Number
0 to 7
One Block =
160 ms
Block 9
Word Number
72 to 79
Block 10
Word Number
80 to 87
PHASE A
BIW
Address
Field
Vector
Field
Message Field
Idle Field
AA1227
Figure A-2 FLEX™ Signal Structure for 1600 BPS
MOTOROLA
MC68181 Technical Data Sheet
A-3
For More Information On This Product,
Go to: www.freescale.com