Specifications
External Memory Expansion Port (Port A)
MOTOROLA
DSP56367
3-45
3.10.3
ARBITRATION TIMINGS
Figure 3-18 Asynchronous Bus Arbitration Timing
Table 3-17 Asynchronous Bus Arbitration Timing
No.
Characteristics
Expression
120 MHz
Un
it
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
Note:
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.
BG1
BB
250
251
BG2
Summary of Contents for DSP56367
Page 16: ...xvi MOTOROLA CONTENTS Paragraph Number Title Page Number ...
Page 22: ...xxii MOTOROLA List of Figures Figure Number Title Page Number ...
Page 26: ...xxvi MOTOROLA List of Tables Table Number Title Page Number ...
Page 148: ...4 6 DSP56367 MOTOROLA Design Considerations PLL Performance Issues ...
Page 248: ...9 30 DSP56367 MOTOROLA Serial Host Interface SHI Programming Considerations ...
Page 306: ...10 58 DSP56367 MOTOROLA Enhanced Serial Audio Interface ESAI ESAI Initialization Examples ...
Page 389: ...Bootstrap ROM Contents MOTOROLA DSP56367 A 15 end ...
Page 390: ...A 16 DSP56367 MOTOROLA Bootstrap ROM Contents ...
Page 432: ...C 8 DSP56367 MOTOROLA JTAG BSDL ...
Page 484: ...D 52 DSP56367 MOTOROLA Programmer s Reference ...
Page 490: ...E 6 DSP56367 MOTOROLA Power Consumption Benchmark ...
Page 516: ...F 26 DSP56367 MOTOROLA IBIS Model ...
Page 522: ...Index 6 MOTOROLA Index ...
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