mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 694

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mpc823rg

Manufacturer Part Number
mpc823rg
Description
Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
Manufacturer
Freescale Semiconductor, Inc
Datasheet
Communication Processor Module
POINTER
POINTER
POINTER
POINTER
LENGTH
LENGTH
LENGTH
LENGTH
STATUS
STATUS
STATUS
STATUS
LEGEND:
RECEIVED IN HDLC
CR = CRC BYTE
A = ADDRESS BYTE
C = CONTROL BYTE
F = FLAG
I = INFORMATION BYTE
TWO FRAMES
TIME
F
Figure 16-78. SCC2 HDLC Receive Buffer Descriptor Example
E
0
E
E
E
0
0
1
A
A C
32-BIT BUFFER POINTER
32-BIT BUFFER POINTER
32-BIT BUFFER POINTER
32-BIT BUFFER POINTER
STORED IN RX BUFFER
I
RECEIVE BD 0
RECEIVE BD 3
L
1
RECEIVE BD 1
L
1
RECEIVE BD 2
L
0
Freescale Semiconductor, Inc.
I
000B
0008
0003
XXXX
For More Information On This Product,
F
F
1
F
0
1
I
I
MPC823 REFERENCE MANUAL
I
AB
1
Go to: www.freescale.com
I CR CR F
AFTER CONTROL
CLOSED WHEN
CLOSING FLAG
ABORT WAS
RECEIVED
RECEIVED
BUFFER
BYTE
BUFFER
BUFFER
FULL
EMPTY
STILL
LINE IDLE
MRBLR = 8 BYTES FOR SCC2
STORED IN RX BUFFER
F A A C
LAST I-FIELD BYTE
CONTROL BYTE
CONTROL BYTE
(I-FIELD) BYTES
INFORMATION
CRC BYTE 1
CRC BYTE 2
ADDRESS 1
ADDRESS 2
UNEXPECTED ABORT
ADDRESS 2
ADDRESS 1
BUFFER
BUFFER
BUFFER
BUFFER
OCCURS BEFORE
EMPTY
EMPTY
EMPTY
CLOSING FLAG
5
ABORT/IDLE
8 BYTES
8 BYTES
8 BYTES
8 BYTES
PRESENT
MOTOROLA
TIME

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