mc68181 Freescale Semiconductor, Inc, mc68181 Datasheet - Page 32

• Manufacturer Part Number: mc68181
• Description: Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

MC68181
FLEX Frame Structure
A-4
Sync 1 Frame
Frame
127
The 3200 bps rate is transmitted as two concurrent phases of information (A and C),
as shown in Figure A-3, at either:
•
•
Frame
Info
0
1600 symbols per second using 4-level FSK modulation, or
3200 symbols per second using 2-level FSK modulation.
PHASE A
PHASE C
Sync 2
Figure A-3 FLEX™ Signal Structure for 3200 BPS
Frame
1
MC68181 Technical Data Sheet
Freescale Semiconductor, Inc.
Frame
For More Information On This Product,
BIW
BIW
Word Number
2
One Block =
Block 0
160 ms
0 to 7
One Frame = 1.875 s.
One Cycle = 4 Minutes
Frame
Address
Go to: www.freescale.com
Field
3
Address
Field
Frame
4
Vector
Field
Vector
Field
Word Number
72 to 79
Block 9
Message Field
Frame
125
Message Field
Frame
126
Word Number
Block 10
80 to 87
Frame
Idle Field
127
Idle Field
MOTOROLA
AA1228