Processor Users Manual

8-22 MPC8260 PowerQUICC II UserÕs Manual MOTOROLA
Part III. The Hardware Interface
Extended transfer mode is enabled by setting the BCR[ETM].
Table 8-13. Address and Size State for Extended Transfers
Size State [0Ð3] Address State[0Ð4] Port Size Next Size State [0Ð3] Next Address State[0Ð4]
Half x x x 1 1 Byte Byte x x 1 0 0
xx101 xx110
xxxxx Half Stop
3-Byte x x 0 1 0 Byte Half x x 0 1 1
xx100 xx101
x x 0 1 0 Half Byte x x 1 0 0
xx100 xx110
Word x x 0 0 1 Byte 3-Byte x x 0 1 0
xx011 xx100
5-Byte x x 0 0 0 Byte Word x x 0 0 1
xx001 xx010
xx010 xx011
xx011 xx100
x x 0 0 0 Half 3-Byte x x 0 1 0
xx010 xx100
xx011 Word xx100
x x 0 0 0 Word Byte x x 1 0 0
xx011 Word xx100
xxxxx Double Stop
6-Byte x x 0 0 0 Byte 5-Byte x x 0 0 1
xx001 xx010
xx010 xx011
x x 0 0 0 Half Word x x 0 1 0
xx010 xx100
x x 0 0 0 Word Half x x 1 0 0
xx010 Word xx100
xxxxx Double Stop
7-Byte x x 0 0 0 Byte 6-Byte x x 0 0 1
xx001 xx010
x x 0 0 0 Half 5-Byte x x 0 1 0
x x 0 0 1 6-Byte x x 0 1 0
x x 0 0 0 Word 3-Byte x x 1 0 0
x x 0 0 1 4-Byte x x 1 0 0
xxxxx Double Stop