tmp1941af TOSHIBA Semiconductor CORPORATION, tmp1941af Datasheet - Page 145
tmp1941af
Manufacturer Part Number
tmp1941af
Description
32-bit Tx System Risc
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TMP1941AF.pdf
(354 pages)
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10.4.7
Data Packing and Unpacking
DMAC if the programmed transfer size is not equal to the device port size.
wide, four byte-read cycles occur. The four bytes of data are buffered in the DHR before a destination
word-write cycle occurs.
In dual-address mode, the internal 32-bit DHR allows the data to be packed and unpacked by the
For example, if a source I/O peripheral is 8-bits wide and a destination memory device is 32-bits
The following illustrates the byte ordering for packing and unpacking of data.
4n + 3
4n + 2
4n + 1
4n + 0
8
I/O Device
D
C
B
A
Figure 10.13 Data Packing and Unpacking
0
TMP1941AF-105
Little-Endian
31
D
C
DHR
TMP1941AF
B
2003-03-27
A
0
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