mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 867

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

REN—SMCx Receive Enable
16.11.7.10 SMCx TRANSPARENT RECEIVE BUFFER DESCRIPTOR. Using receive
(RX) buffer descriptors, the communication processor module reports information about the
received data for each buffer and closes the current buffer, generates a maskable interrupt,
and starts to receive data into the next buffer after one of the following events occurs:
E—Empty
Bits 1, 4–5, 7–13, and 15—Reserved
These bits are reserved and must be set to 0.
OFFSET + 0
OFFSET + 2
OFFSET + 4
OFFSET + 6
NOTE: You are only responsible for initializing the items in bold.
• An overrun error occurs
• A full receive buffer is detected
• The ENTER HUNT MODE command is issued
0 = SMCx receiver disabled.
1 = SMCx receiver enabled.
0 = The data buffer associated with this RX buffer descriptor is filled with received data
1 = The data buffer associated with this buffer descriptor is empty or is currently
or data reception has been aborted due to an error condition. The core is free to
examine or write to any fields of this RX buffer descriptor. The communication
processor module does not use this buffer descriptor as long as the E bit is zero.
receiving data. This RX buffer descriptor and its associated receive buffer are
owned by the communication processor module. Once the E bit is set, the core
must not write any fields of this RX buffer descriptor.
0
E
Note: The communication processor module sets all the status bits in this buffer
RES
1
descriptor, but you must clear them before submitting the buffer descriptor to the
communication processor module.
W
2
Freescale Semiconductor, Inc.
For More Information On This Product,
3
I
RESERVED
MPC823 REFERENCE MANUAL
4
Go to: www.freescale.com
5
RX DATA BUFFER POINTER
CM
6
DATA LENGTH
7
8
9
RESERVED
Communication Processor Module
10
11
12
13
OV
14
16-415
RES
15