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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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HD6432351 Fiches technique(PDF) 218 Page - Renesas Technology Corp |
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HD6432351 Fiches technique(HTML) 218 Page - Renesas Technology Corp |
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218 / 1025 page  Section 6 Bus Controller Rev. 3.00 Sep 15, 2006 page 184 of 988 REJ09B0330-0300 (4) Usage Notes When DRAM space is accessed, the ICIS0 and ICIS1 bit settings are disabled. In the case of consecutive reads between different areas, for example, if the second access is a DRAM access, only a Tp cycle is inserted, and a TI cycle is not. The timing in this case is shown in figure 6.34. However, in burst access in RAS down mode these settings are enabled, and an idle cycle is inserted. The timing in this case is shown in figures 6.35 (a) and (b). T1 Address bus φ RD External read Data bus T2 T3 Tp Tr DRAM space read Tc1 Tc2 Figure 6.34 Example of DRAM Access after External Read |
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