W90N740CD WINBOND [Winbond], W90N740CD Datasheet - Page 26

• Manufacturer Part Number: W90N740CD
• Description: 32-Bit ARM7TDMI-Based Micro-Controller
• Manufacturer: WINBOND [Winbond]

Table 6.2.9 and Table 6.2.10
Using little-endian and word access, Program/Data path between register and external memory
WA = Address whose LSB is 0, 4, 8, C
nWBE [3-0] / SDQM [3-0] = A means active and U means inactive
EXT. MEM DATA
CPU REG DATA
BIT NUMBER
BIT NUMBER
BIT NUMBER
BIT NUMBER
BIT NUMBER
OPERATION
SEQUENCE
SDQM [3-0]
XD WIDTH
ACCESS
TIMING
SA
SD
ED
XA
XD
AUUU
31
ABCD
Table6.2.8 Byte access read operation with Big Endian
7 0
BA0
7 0
7 0
BA0
A
A
A
0
READ OPERATION (CPU REGISTER
UAUU
31
ABCD
15 8
7 0
7 0
BA1
BA0
B
B
B
0
WORD
31
ABCD
0
23 16
UUAU
31
ABCD
7 0
7 0
BA2
BA0
C
C
C
X = Don’t care
0
- 23 -
W90N740CD/W90N740CDG
31 24
UUUA
31
ABCD
7 0
7 0
BA3
BA0
Publication Release Date: September. 19, 2005
D
D
D
0
EXTERNAL MEMORY)
XXAU
15 0
7 0
7 0
7 0
BAL
BAL
CD
C
C
C
HALF WORD
15 0
CD
XXUA
15 8
15 0
BAU
7 0
7 0
BAL
CD
D
D
D
Revision A7
BYTE
XXXA
7 0
7 0
7 0
7 0
7 0
BA
BA
D
D
D
D
D