A SERVICE OF

logo

151
4.16 Relationship between Data Bus Widths and Control Signals
4.16.3 External Access
This section lists several external accesses.
Word Access
Bus width Big endian mode Little endian mode
16-bit bus
width
8-bit bus
width
Control pin
address: '0' '2'
D31
D31
AA AA CC WR0X CASL WEL
BB BB DD WR1X CASH WEH
D16
CC
DD
D00
1)
2)
Internal register External pin
address:
0 2
D31 D31
AA DD BB WR0X CASL WEL
BB CC AA WR1X CASH WEH
D16
CC
DD
D00
1) 2)
Control pinInternal register External pin
address:
0 1 2 3
D31 D31
AA
AA BB CC DD WR0X CAS WE
D24
BB
CC
DD
D00
1) 2) 3) 4)
Control pin
Internal register
External pin
address: 0 1 2 3
D31 D31
AA DD CC BB AA WR0X CAS WE
D24
BB
CC
DD
D00
1) 2) 3) 4)
Control pinInternal register External pin