參數(shù)資料
型號(hào): 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(yè)數(shù): 11/74頁(yè)
文件大?。?/td> 234K
代理商: MPC823
Communication Processor Module
MOTOROLA
MPC823 REFERENCE MANUAL
16-389
S
C
1
P
16.11.5.4 DISABLING PART OF THE SMCx RECEIVER.
reinitialize the receive parameters to the state they were in after reset.
Follow this shorter sequence to
1. Clear the REN bit in the SMCMR.
2.
INIT RX PARAMETERS
3. Set the REN bit in the SMCMR.
command and make any additional modifications.
16.11.5.5 SWITCHING PROTOCOLS.
serial management controller without resetting the board or affecting any other serial
management controller:
To switch a protocol that is being executed by a
1. Clear the TEN and REN bits in the SMCMR.
2. Issue the
INIT TX AND RX PARAMS
parameters. Make any additional modifications in the SMCMR.
3. Set the TEN and REN bits in the SMCMR. The serial management controller is now
enabled with the new protocol.
command to initialize the transmit and receive
16.11.6 The SMCx in UART Mode
Compared to an SCCx in UART mode, the serial management controllers are designed to
support simple debug/monitor ports instead of full-featured UART controllers. The following
is a list of the features that the SMCx in UART mode does not support.
RTSx, CTSx, and CDx pins
Receive and transmit sections clocked at different rates
Fractional stop bits
Built-in multidrop modes
Freeze mode for implementing flow control
Isochronous operation
(1
×
clock
Interrupts on special control character reception
Ability to transmit data on demand using the transmit on demand register
)
Tip:
You can save power by clearing the TEN and REN bits of a serial management
controller.
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