
Preliminary Information
PSD4000 Series
37
The
PSD4000
Functional
Blocks
(cont.)
MICRO-
CONTROLLER
WR
RD
BHE
ALE
RESET
AD[7:0]
AD[15:8]
A[15:8]
(OPTIONAL)
A[7:0]
ADIO
PORT
PORT
F
PORT
G
PORT
A,B, or
C
WR (CNTRL0)
RD (CNTRL1)
BHE (CNTRL2)
RST
ALE (PD0)
PORT D
A[23:16]
(OPTIONAL)
(OPTIONAL)
PSD4135G2
Figure 12. An Example of a Typical 16-Bit Multiplexed Bus Interface
MICRO-
CONTROLLER
WR
RD
BHE
ALE
RESET
D[15:0]
A[15:0]
A[23:16]
D[7:0]
ADIO
PORT
PORT
F
PORT
G
PORT
A,B or
C
WR (CNTRL0)
RD (CNTRL1)
BHE (CNTRL2)
RST
ALE (PD0)
PORT D
(OPTIONAL)
D[15:8]
(OPTIONAL)
PSD4135G2
Figure 13. An Example of a Typical 16-Bit Non-Multiplexed Bus Interface