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H8SX1663 数据表(PDF) 213 Page - Renesas Technology Corp |
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H8SX1663 数据表(HTML) 213 Page - Renesas Technology Corp |
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213 / 1158 page ![]() Section 6 Bus Controller (BSC) Rev.1.00 Jun. 07, 2006 Page 161 of 1102 REJ09B0294-0100 Bit Bit Name Initial Value R/W Description 15, 14 All 0 R Reserved The initial value should not be changed. 13 12 TPC1 TPC0 0 0 R/W R/W Precharge Cycle Control Select the number of RAS precharge cycles on a normal access and a refresh cycle. 00: One cycle 01: Two cycles 10: Three cycles 11: Four cycles 11, 10 All 0 R Reserved The initial value should not be changed. 9 8 RCD1 RCD0 0 0 R/W R/W RAS-CAS Wait Control Select the number of wait cycles inserted between RAS and CAS cycles. 00: No wait cycle inserted 01: One wait cycle inserted 10: Two wait cycles inserted 11: Three wait cycles inserted 7 to 0 All 0 R Reserved The initial value should not be changed. |
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