DSP56362P datasheet(44/152 Pages) FREESCALE

部件名	DSP56362P

功能描述	24-Bit Audio Digital Signal Processor

PDF	152 Pages

Scroll/Zoom	100%

制造商	FREESCALE [Freescale Semiconductor, Inc]

网页	http://www.freescale.com

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44 / 152 page

External Memory Expansion Port (Port A)

DSP56362 Technical Data, Rev. 4

3-18

Freescale Semiconductor

Figure 3-12 SRAM Write Access

3.10.2

DRAM Timing

The selection guides provided in Figure 3-13 and Figure 3-16 should be used for primary selection only.

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.

A0–A17

Data

Out

D0–D23

AA0–AA3

100

102

101

107

114

110

112

111

108

109

AA0469

103

119

118

DSP56362P 数据表(PDF) 44 Page - Freescale Semiconductor, Inc