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HD64F2149YV 데이터시트(PDF) 210 Page - Renesas Technology Corp |
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HD64F2149YV 데이터시트(HTML) 210 Page - Renesas Technology Corp |
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210 / 1075 page ![]() Section 7 Data Transfer Controller Rev. 3.00 Jan 18, 2006 page 182 of 1044 REJ09B0280-0300 7.3.3 DTC Vector Table Figure 7.4 shows the correspondence between DTC vector addresses and register information. Table 7.4 shows the correspondence between activation sources, vector addresses, and DTCER bits. When the DTC is activated by software, the vector address is obtained from: H'0400 + DTVECR[6:0] << 1 (where << 1 indicates a 1-bit left shift). For example, if DTVECR is H'10, the vector address is H'0420. The DTC reads the start address of the register information from the vector address set for each activation source, and then reads the register information from that start address. The register information can be placed at predetermined addresses in the on-chip RAM. The start address of the register information should be an integral multiple of four. The configuration of the vector address is the same in both normal and advanced modes, a 2-byte unit being used in both cases. These two bytes specify the lower bits of the address in the on-chip RAM. Register information start address Register information Chain transfer DTC vector address Figure 7.4 Correspondence between DTC Vector Address and Register Information |
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