153
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 pinInternal register External pin
address: '0'
D31 D31 AA WR0X CASL WEL
D16
AA
D00 1)
Control pinInternal 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 pinInternal register External pin
address: '2'
D31 D31CC WR0X CASL WEL
D16
CC
D00 1)
Control pinInternal 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