FUJITSU MB91F109 FR30 - Manual (Page 177)

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4.16 Relationship between Data Bus Widths and Control Signals
■ 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