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SH7014 Datasheet(PDF) 642 Page - Renesas Technology Corp |
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SH7014 Datasheet(HTML) 642 Page - Renesas Technology Corp |
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642 / 754 page ![]() Appendix A On-Chip Supporting Module Registers Rev.5.00 Sep. 27, 2007 Page 608 of 716 REJ09B0398-0500 BSC Bus Control Register 1 (BCR1) H'FFFF8620 8/16/32 Bit Item 15 14 13 12 11 10 9 8 Bit name ― ― ― ― ― ― ― IOE Initial value 0 0 0 0 0 0 0 0 R/W R R R R R R R R/W Item 7 6 5 4 3 2 1 0 Bit name ― ― ― ― A3SZ A2SZ A1SZ A0SZ Initial value 0 0 0 0 1 1 1 1 R/W R R R R R/W R/W R/W R/W Bit Name Value Description 0 CS3 space is ordinary space (initial value) 8 Multiplex I/O Enable (IOE) 1 CS3 space is address/data multiplex I/O space 0 Byte (8-bit) size 3 CS3 Space Size Specification (A3SZ) 1 Word (16-bit) size (initial value) 0 Byte (8-bit) size 2 CS2 Space Size Specification (A2SZ) 1 Word (16-bit) size (initial value) 0 Byte (8-bit) size 1 CS1 Space Size Specification (A1SZ) 1 Word (16-bit) size (initial value) 0 Byte (8-bit) size 0 CS0 Space Size Specification (A0SZ) 1 Word (16-bit) size (initial value) Note: A0SZ is effective only in on-chip ROM effective mode. In on-chip ROM ineffective mode, the CS0 space bus size is specified by the mode pin. |
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