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Motorola MPC823e Reference Manual page 883

Microprocessor for mobile computing
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AR—Abort Request
This bit is only valid when a serial management controller uses the monitor channel
protocol and it is set by a serial management controller when an abort request is
received on the A bit. The SMCx transmitter transmits the EOM on the E bit after an
abort request is received.
Bits 3–7—Reserved
These bits are reserved and must be set to 0.
DATA—Data Field
This field contains the data to be transmitted by a serial management controller on the
monitor channel.
• C/I_RXBD—The SMCx circuit interface channel receive (RX) buffer descriptor is used
by the communication processor module to report information about the circuit interface
channel receive byte.
0
1
2
E
OFFSET + 0
E—Empty
0 =
The communication processor module clears this bit to indicate that the data
byte associated with this buffer descriptor is now available to the core.
1 =
The core set this bit to indicate that the data byte associated with this buffer
descriptor has been read.
Note: Additional data received is discarded until the E bit is set.
Bits 1–7 and 14–15—Reserved
These bits are reserved and must be set to 0.
C/I DATA—Command/Indication Data Bits
This field represents a 4-bit data field for circuit interface channel 0 and a 6-bit data field
for circuit interface channel 1. It contains the data received from the circuit interface
channel. For circuit interface channel 0, bits 10-13 contain the 4-bit data field and bits
8 and 9 are always written with zeros. For circuit interface channel 1, bits 8-13 contain
the 6-bit data field.
MOTOROLA
3
4
5
6
7
RES
MPC823e REFERENCE MANUAL
Communication Processor Module
8
9
10
11
12
13
C/I DATA
14
15
RESERVED
16-429

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