W90N740CD WINBOND [Winbond], W90N740CD Datasheet - Page 24

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

ACCESS OPERATION
TIMING SEQUENCE
TIMING SEQUENCE
EXT. MEM DATA
CPU REG DATA
EXT. MEM DATA
CPU REG DATA
OPERATION
BIT NUMBER
BIT NUMBER
BIT NUMBER
BIT NUMBER
BIT NUMBER
NWBE [3-0] /
BIT NUMBER
BIT NUMBER
BIT NUMBER
BIT NUMBER
BIT NUMBER
SDQM [3-0]
XD WIDTH
SDQM [3-0]
ACCESS
XD WIDTH
SD
ED
XD
SA
XA
SA
SD
ED
XA
XD
Table6.2.5 Half-word access write operation with Big Endian
Table6.2.6 Half-word access read operation with Big Endian
CD CD
CD CD
CD CD
31
31
AAUU
31
31 16
HAL
HAL
AB CD
CD
AAUU
31
15 0
15 0
15 0
HAL
HAL
WRITE OPERATION (CPU REGISTER
AB
AB
AB
READ OPERATION (CPU REGISTER
0
0
0
0
WORD
WORD
31
ABCD
31
ABCD
0
0
CD CD
CD CD
CD CD
31
31
UUAA
31
AB CD
HAU
15 0
HAL
UUAA
31
CD
15 0
HAU
15 0
15 0
HAL
CD
CD
CD
0
0
0
0
- 21 -
W90N740CD/W90N740CDG
HALF WORD
HALF WORD
CD CD
CD CD
Publication Release Date: September. 19, 2005
31
ABCD
31
31
XXAA
XXAA
15 0
15 0
15 0
15 0
15 0
15 0
15 0
HA
HA
CD
CD
CD
HA
CD
CD
HA
CD
CD
0
0
0
EXTERNAL MEMORY)
EXTERNAL MEMORY)
1st write
1st read
CD CD
31
XXXA
XXXA
15 0
7 0
7 0
7 0
7 0
7 0
HA
DX
HA
C
C
C
D
D
0
BYTE
BYTE
31
ABCD
15 0
15 0
HA
DC
HA
DC
0
2nd write
2nd read
CD CD
Revision A7
31
XXXA
XXXA
HA+1
15 0
HA+1
7 0
7 0
7 0
7 0
7 0
DC
D
D
D
C
C
0