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DSP56366P датащи(PDF) 61 Page - Freescale Semiconductor, Inc

номер детали DSP56366P
подробное описание детали  24-Bit Audio Digital Signal Processor
PDF  110 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

DSP56366P датащи(HTML) 61 Page - Freescale Semiconductor, Inc

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DSP56366 Technical Data, Rev. 3.1
Freescale Semiconductor
3-35
Figure 3-17 DRAM Refresh Access
3.10.3
Arbitration Timings
Table 3-17 Asynchronous Bus Arbitration timing
No.
Characteristics
Expression
120 MHz
Unit
Min
Max
250
BB assertion window from BG input negation.
2 .5* Tc + 5
—
25.8
ns
251
Delay from BB assertion to BG assertion
2 * Tc + 5
21.7
—
ns
Notes:
1. Bit 13 in the OMR register must be set to enter Asynchronous Arbitration mode
2. If Asynchronous Arbitration mode is active, none of the timings in
Table 3-17 is required.
3. In order to guarantee timings 250, and 251, it is recommended to assert
BG inputs to different 56300 devices (on the
same bus) in a non overlap manner as shown in
Figure 3-18.
RAS
CAS
WR
157
163
162
162
190
170
165
189
177
AA0478



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