mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 694

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

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