Fujitsu FR81S Benutzerhandbuch
CHAPTER 36: EXTERNAL BUS INTERFACE
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : EXTERNAL BUS INTERFACE
FUJITSU SEMICONDUCTOR CONFIDENTIAL
51
5.12. Example of Connection to Little Endian Device
This section shows an example of connection to little endian device.
This section shows the method of connecting the data bus and byte enable signals to a little endian device.
Figure 5-15 16-bit Bus Width
Figure 5-16 8-bit Bus Width
WR0X,WR1X
CS3X
RDX
A17 to A00
D23 to D16
D7 to D0
D15 to D8
OE_X
WE_X[1:0]
CS_
X
D31 to D24
LSI
External LSI (little endian)
WE_X :
Write enable
OE_X :
Output enable
A17 to A00
CS3
X
WE
_
X
RDX
WR0
X
D7 to D0
CS_
X
OE_X
D31 to D24
LSI
WE_X
:
Write enable
OE_X
:
Output enable
A17 to A00
A17 to A00
External LSI (little endian)
MB91520 Series
MN705-00010-1v0-E
1250