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SH7616 Datasheet(PDF) 307 Page - Renesas Technology Corp |
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SH7616 Datasheet(HTML) 307 Page - Renesas Technology Corp |
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307 / 935 page  Section 7 Bus State Controller (BSC) Rev. 2.00 Mar 09, 2006 page 281 of 906 REJ09B0292-0200 16 bits, the SH7616 connects D15–D8 to the least significant byte of the other bus master and D7– D0 to the most significant byte. Only data conversion is supported by this function. For this reason, be careful not to place program code or constants in the CS2, CS4 space. When this function is used, make sure that the access unit is the same for writing and reading. For example, data written by longword access should be read by longword access. If the read access unit is different from the write access unit, an incorrect value will be read. D31 70 70 70 D23 D15 32-bit external device (little-endian) D7 D0 15 8 70 70 70 A24–A0 000000 000001 000002 000003 000000 000002 000000 Data input/output pin Byte read/write of address 0 Byte read/write of address 1 Byte read/write of address 2 Byte read/write of address 3 Word read/write of address 0 Word read/write of address 2 Longword read/write of address 0 15 8 70 15 8 23 16 31 24 Figure 7.8 32-Bit External Devices and Their Access Units D15 70 D7 16-bit external device (little-endian) D0 7 8 70 70 0 7 15 015 015 16 31 0 A24–A0 000000 000001 000002 000003 000000 000002 000000 000002 Data input/output pin Byte read/write of address 0 Byte read/write of address 1 Byte read/write of address 2 Byte read/write of address 3 Word read/write of address 0 Word read/write of address 2 Longword read/write of address 0 7 8 7 8 23 24 Figure 7.9 16-Bit External Devices and Their Access Units |
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