mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 837

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

TFCR
RESET
FIELD
ADDR
R/W
BIT
AT—Address Type 1–3
These bits contain the function code value used during the SDMA channel memory
Bits 0–2—Reserved
These bits are reserved and must be set to 0.
BO—Byte Ordering
Set these bits to select the required byte ordering of the data buffer. If this field is
access. The AT0 pin is driven with a 1 to identify this SDMA channel access as a DMA
type.
modified on-the-fly, it takes effect at the beginning of the next frame or the next buffer
descriptor.
01 = PowerPC little-endian byte ordering. As data is transmitted onto the serial line
1X = Motorola byte ordering (normal operation) is also called big-endian byte
00 = The DEC/Intel convention is used for byte ordering (swapped operation) and
01 = PowerPC little-endian byte ordering. As data is transmitted onto the serial line
1X = Motorola byte ordering (normal operation) is also called big-endian byte
from the data buffer, the least-significant byte of the buffer double-word
contains data to be transmitted earlier than the most-significant byte of the
same buffer double-word.
ordering. As data is transmitted onto the serial line from the data buffer, the
most-significant byte of the buffer word contains data to be transmitted earlier
than the least-significant byte of the same buffer word.
0
is also called little-endian byte ordering. The transmission order of bytes within
a buffer word is reversed in comparison to the Motorola mode. This mode is
supported only for 32-bit port size memory.
from the data buffer, the least-significant byte of the buffer double-word
contains data to be transmitted earlier than the most-significant byte of the
same buffer double-word.
ordering. As data is transmitted onto the serial line from the data buffer, the
most-significant byte of the buffer word contains data to be transmitted earlier
than the least-significant byte of the same buffer word.
RESERVED
R/W
Freescale Semiconductor, Inc.
1
0
For More Information On This Product,
MPC823 REFERENCE MANUAL
2
Go to: www.freescale.com
SMC1 AND SMC2 BASE + 0x05
3
R/W
BO
0
4
Communication Processor Module
5
AT1–AT3
R/W
6
0
16-385
7