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參數資料
| 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： | 10/74頁 |
| 文件大小： | 234K |
| 代理商： | MPC823 |
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Communication Processor Module
16-388
MPC823 REFERENCE MANUAL
MOTOROLA
S
C
1
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16.11.5.1 DISABLING THE ENTIRE SMCx TRANSMITTER.
enable or disable the SMCx transmitter:
Follow these steps to fully
1. Issue the
management controller is transmitting data since it stops transmission smoothly. This
command is not required if a serial management controller is not transmitting, if you
overwrite the TBPTR or if you execute the
2. Clear the TEN bit in the SMCMR. This disables the SMCx transmitter and puts it in a
reset state.
3. Modify the SMCx transmit parameters, including the parameter RAM. If you prefer to
switch protocols or restore the SMCx transmit parameters to their initial state, issue
the
INIT TX PARAMETERS
command.
4. Issue the
RESTART TRANSMIT
command. You must do this if you did not issue the
INIT TX PARAMETERS
command in step 3.
5. Set the TEN bit in the SMCMR. When the R bit is set in the TX buffer descriptor,
transmission begins using the TX buffer descriptor indicated by the TBPTR value.
STOP TRANSMIT
command. This command is recommended when a serial
INIT TX PARAMETERS
command.
16.11.5.2 DISABLING PART OF THE SMCx TRANSMITTER.
sequence if you prefer to reinitialize the transmit parameters to the state they were in after
reset.
Follow this shorter
1. Clear the TEN bit in the SMCMR.
2. Issue the
INIT TX PARAMETERS
3. Set the TEN bit in the SMCMR.
command and make any additional modifications.
16.11.5.3 DISABLING THE ENTIRE SMCx RECEIVER.
or disable the receiver:
Follow these steps to fully enable
1. Clear the REN bit in the SMCMR. Reception is aborted immediately, which disables
the SMCx receiver and puts it in a reset state.
2. Modify the SMCx receive parameters, including the parameter RAM. If you prefer to
switch protocols or restore the SMCx receive parameters to their initial state, issue the
INIT RX PARAMETERS
command.
3. Issue the
CLOSE RX BD
command. You must do this if you did not issue the
PARAMETERS
command in step 2.
4. Set the REN bit in the SMCMR. When the E bit is set in the RX buffer descriptor,
reception begins immediately using the RX buffer descriptor indicated by the RBPTR.
INIT RX
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