dsp56362 Freescale Semiconductor, Inc, dsp56362 Datasheet - Page 44

• Manufacturer Part Number: dsp56362
• Description: Dsp56362 24-bit Audio Digital Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

External Memory Expansion Port (Port A)
3.10.2
The selection guides provided in
Final selection should be based on the timing provided in the following tables. As an example, the selection
guide suggests that 4 wait states must be used for 100 MHz operation when using Page Mode DRAM.
However, by using the information in the appropriate table, a designer may choose to evaluate whether
fewer wait states might be used by determining which timing prevents operation at 100 MHz, running the
chip at a slightly lower frequency (e.g., 95 MHz), using faster DRAM (if it becomes available), and control
factors such as capacitive and resistive load to improve overall system performance.
3-18
AA0–AA3
D0–D23
A0–A17
DRAM Timing
WR
RD
TA
Figure 3-13
114
Figure 3-12 SRAM Write Access
101
DSP56362 Technical Data, Rev. 4
112
and
107
Figure 3-16
100
110
102
108
should be used for primary selection only.
119
109
Data
Out
103
111
118
Freescale Semiconductor
AA0469