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MPC8280 Datasheet(PDF) 722 Page - Freescale Semiconductor, Inc

Part # MPC8280
Description  PowerQUICC??II Family Reference Manual
PDF  1386 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MPC8280 Datasheet(HTML) 722 Page - Freescale Semiconductor, Inc

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SCC UART Mode
MPC8280 PowerQUICC II Family Reference Manual, Rev. 1
21-16
Freescale Semiconductor
Figure 21-7. SCC UART Receiving using RxBDs
Byte 5
Buffer
0
0008
32-Bit Buffer Pointer
0
EID
Rx BD 0
Status
Length
Pointer
0
0002
32-Bit Buffer Pointer
1
EID
Rx BD 1
Status
Length
Pointer
0
0004
32-Bit Buffer Pointer
0
EID
Rx BD 2
Status
Length
Pointer
1
XXXX
32-Bit Buffer Pointer
E
Rx BD 3
Status
Length
Pointer
Byte 1
Byte 2
Byte 8
Buffer
Byte 9
Byte 10
Buffer
Byte 1
Byte 2
Byte 3
Buffer
Byte 4 Error!
Empty
Additional Bytes
will be Stored Unless
Idle Count Expires
(MAX_IDL)
8 Bytes
8 Bytes
8 Bytes
8 Bytes
Characters
Received by UART
Fourth Character
10 Characters
Long Idle Period
has Framing Error!
Present
Time
Time
5 Characters
Buffer Full
Idle Time-Out
Occurred
Byte 4 has
Framing Error
Reception
Still in Progress
with this Buffer
1
FR
etc.
Empty
MRBLR = 8 Bytes for this SCC



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