Fujitsu mb91192 Manuale Utente
97
4.6
Bus Operation
The basic item of the bus operation is explained as follow.
• The relationship between the data bus width and control signal
• Bus access of big endian
• Bus access of little endian
• Comparison of external access between big endian and little endian
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Relationship between Data Bus Width and Control Signal
The relationship between the data bus width and control signal for the next bus interface is described.
•
The time division input/output bus interface
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Bus Access of Big Endian
The external access is described as follow.
•
Data format
•
Data bus width
•
External bus access
•
Connection example with external device
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Bus Access of Little Endian
The external access is described as follow.
•
Difference between little endian and big endian
•
Data format
•
Data bus width
•
Connection example with external device
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Comparison of External Access between Big Endian and Little Endian
As a comparison of the external access between big endian and little endian, word access, half-word access,
and byte access to the bus width are described.