mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 879

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

16.11.8.3 SMCx GCI COMMANDS. The following commands are issued to the CPM
command register.
OFFSET + 0
• C/I_TXBD—The SMCx circuit interface channel transmit (TX) buffer descriptor is used
• TEMP1–4—These bits are used internally by the RISC microcontroller.
• INIT TX AND RX PARAMS—This command initializes the transmit and receive
• TRANSMIT ABORT REQUEST—This receiver command can be issued when the
• TIMEOUT—This transmitter command can be issued when the MPC823 implements
by the communication processor module to report information about the circuit interface
channel transmit byte.
R—Ready
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
parameters in the parameter RAM to their reset state and it is especially useful when
switching protocols on a given serial channel.
MPC823 implements the monitor channel protocol. When it is issued, the MPC823
sends an abort request on the A bit.
the monitor channel protocol and it is usually issued because the device is not
responding or A bit errors are detected. The MPC823 sends an abort request on the E
bit at the time this command is issued.
for circuit interface channel 1. It contains the data to be transmitted onto 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.
0 =
1 =
R
0
The communication processor module clears this bit after transmission to
indicate that the buffer descriptor is now available to the core.
The core sets this bit to indicate that the data associated with this buffer
descriptor is ready for transmission.
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2
Freescale Semiconductor, Inc.
For More Information On This Product,
3
RESERVED
MPC823 REFERENCE MANUAL
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Go to: www.freescale.com
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6
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Communication Processor Module
C/I DATA
10
11
12
13
RESERVED
14
16-427
15