FUJITSU MB91F109 FR30 User Manual
Page 177
153
4.16 Relationship between Data Bus Widths and Control Signals
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Byte Access
Bus width
Big endian mode
Little endian mode
16-bit bus
width
address: '0'
D31
D31
AA
WR0X CASL WEL
D16
AA
D00
1)
Control pin
Internal register External pin
address: '0'
D31
D31
AA
WR0X CASL WEL
D16
AA
D00
1)
Control pin
Internal register External pin
address: '1'
D31
D31
BB
WR1X CASH WEH
D16
BB
D00
1)
Control pin
Internal register External pin
address: '1'
D31
D31
BB
WR1X CASH WEH
D16
BB
D00
1)
Control pin
Internal register External pin
address: '2'
D31
D31
CC
WR0X CASL WEL
D16
CC
D00
1)
Control pin
Internal register External pin
address: '2'
D31
D31
CC
WR0X CASL WEL
D16
CC
D00
1)
Control pin
Internal register External pin
address: '3'
D31
D31
DD
WR1X CASH WEH
D16
DD
D00
1)
Control pin
Internal register External pin
address: '3'
D31
D31
DD
WR1X CASH WEH
D16
DD
D00
1)
Control pin
Internal register External pin