Freescale Semiconductor MCF5480 - Manual (Page 436)

MCF548x Reference Manual, Rev. 3
17-20 Freescale Semiconductor
Figure 17-15. Single Byte Write Transfer with Muxed 32-A / 8-D
or Non-Muxed 24-A / 8-D
Figure 17-16 depicts a longword read through a 32-bit device. Notice that when the device port size is 32
bits, the only mode the bus supports is multiplexing address and data lines.
Figure 17-16. Longword Read Transfer with Muxed 32-A / 32-D
CLK
S0 S1 S2 S3
AD[31:24]
R/W
ALE
TA
OE
FBCSn, BE/BWEn
A[31:24] DATA[7:0]
AD[15:8]
AD[7:0]
AD[23:16] ADDR[23:16]
ADDR[15:8]
ADDR[7:0]
TSIZ[1:0] 01
CLK
S0 S1 S2 S3
AD[31:24]
R/W
ALE
TA
OE
FBCSn, BE/BWEn
AD[15:8]
AD[7:0]
AD[23:16] A[23:16] D[23:16]
A[31:24] D[31:24]
A[15:8] D[15:8]
A[7:0] D[7:0]
TSIZ[1:0] 00