TC1796
System Units (Vol. 1 of 2)
LMB External Bus Unit
User’s Manual 13-64 V2.0, 2007-07
EBU, V2.0
Figure 13-23 Example of a Motorola-style Demultiplexed Device Access
LMBCLK
A[23:0]
Address
MCT05734
AP1
Next. A.
CSx
M/RW
Data in
D[31:0]
AP2 CPi1 CPi2 CPe3 CPe4 CPe5 RP1 RP2
New
AP1
Sample
Read Access
LMBCLK
A[23:0]
Address
AP1
Next. A.
CSx
MR/W
Data out
D[31:0]
AP2 CPi1 CPi2 CPe3 CPe4 RP1 RP2 RP3
New
AP1
Write Access
WAIT
(used as DTACK)
(used as AS)
(used as AS)
WAIT
(used as DTACK)
1)
1)
1)
1)
1) At Motorola devices, CS is connected with AS while WAIT (with inverse polarity)
is connected to the DTACK output.