Freescale Semiconductor MCF5480 - Manual (Page 286)

MCF548x Reference Manual, Rev. 3
8-36 Freescale Semiconductor
Command Format:
Command Sequence
Figure 8-26. WAREG / WDREG Command Sequence
Operand Data Longword data is written into the specified address or data register. The data is
supplied most-significant word first.
Result Data Command complete status is indicated by returning 0xFFFF (with S cleared)
when the register write is complete.
8.5.3.3.3 Read Memory Location ( READ )
Read data at the longword address. Address space is defined by BAAR[TT,TM]. Hardware forces
low-order address bits to zeros for word and longword accesses to ensure that word addresses are
word-aligned and longword addresses are longword-aligned.
Command/Result Formats:
15 12 11 8 7 4 3 2 0
0x2 0x0 0x8 A/D Register
D[31:16]
D[15:0]
Figure 8-25. WAREG / WDREG Command Format
WAREG/WDREG
???
LS DATA
’NOT READY’
NEXT CMD
’NOT READY’
XXX
BERR
MS DATA
’NOT READY’
NEXT CMD
’CMD COMPLETE’