Transfer modes and status codes

TM1/ TM0 /AD1/ AD0/ Type of transfer0 0 0 0 write byte 30 0 0 1 write byte 20 0 1 0 write byte 10 0 1 1 write byte 0

0 1 0 0 write halfword 1

0 1 0 1 write block (2 to 16 words specified using AD2/ to AD5/

0 1 1 0 write halfword 00 1 1 1 write word

1 0 0 0 read byte 31 0 0 1 read byte 21 0 1 0 read byte 11 0 1 1 read byte 0

1 1 0 0 read halfword 1

1 1 0 1 read block (2 to 16 words specified using AD2/ to AD5/

1 1 1 0 read halfword 01 1 1 1 read word

TM1/ TM0/ Type of acknowledge0 0 bus transfer complete0 1 error1 0 bus timeout error1 1 try again later

• TM0/, TM1/, AD1/, AD0/ define transfer mode from master

• TM0/, TM1/ define status code from slave

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