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參數(shù)資料
| 型號： | MPC823 |
| 廠商： | Motorola, Inc. |
| 英文描述： | Communication Processor Module |
| 中文描述： | 通信處理器模塊 |
| 文件頁數(shù)： | 20/74頁 |
| 文件大?。?/td> | 234K |
| 代理商： | MPC823 |
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Communication Processor Module
16-398
MPC823 REFERENCE MANUAL
MOTOROLA
S
C
1
P
FR—Framing Error
This bit indicates that a character with a framing error has been received and is located in
the last byte of this buffer. A framing error is a character without a stop bit. A new receive
buffer is used to receive additional data. The communication processor module writes this
bit after the received data is in the associated data buffer.
PR—Parity Error
This bit indicates that a character with a parity error has been received and is located in the
last byte of this buffer. A new receive buffer is used to receive additional data. The
communication processor module writes this bit after the received data is in the associated
data buffer.
OV—Overrun
This bit indicates that a receiver overrun has occurred during message reception. The
communication processor module writes this bit after the received data is in the associated
data buffer.
DATA LENGTH
This field represents the number of octets the communication processor module writes into
this buffer descriptor data buffer. After the data is received in the associated data buffer, the
communication processor module writes this field once the buffer descriptor closes.
RX DATA BUFFER POINTER
This field always points to the first location of the associated data buffer and must be even.
The buffer can reside in internal or external memory. The communication processor module
writes this bit after the received data is in the associated data buffer.
Note:
The actual amount of memory allocated for this buffer must be greater than or
equal to the MRBLR entry.
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