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32186 Datasheet(PDF) 827 Page - Renesas Technology Corp |
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32186 Datasheet(HTML) 827 Page - Renesas Technology Corp |
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827 / 1032 page  EXTERNAL BUS INTERFACE 17 17-17 32185/32186 Group Hardware Manual Rev.1.10 REJ09B0235-0110 May 15, 07 17.2 External Bus Interface Related Registers Figure 17.2.2 Setting procedure of CLKOSEL bit If a write cycle to any other area occurs during this interval, the value that was set in the CLKOSEL bit is not reflected. (Note 1) CLKOSELP "1" CLKOSELP "0" CLKOSEL Set value • Example of correct settings • Cases where settings have no effect Because a write cycle to other area exists, the set value is not reflected. (Note 1) CLKOSELP "1" Write to other area (1) (2) Because these two consecutive writes comprise a pair, the next set value is not reflected. CLKOSELP "1" CLKOSELP "1" Note 1 : The writing cycle to the other area is the writing cycle from CPU, DMA, SDI (tool), NBD to any other area. The writing cycle from RTD and DRI do not effect. Note : • This setting shoud be done on internal ROM or internal RAM. CLKOSELP "0" CLKOSEL Set value CLKOSELP "0" CLKOSEL Set value |
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