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CAT24C208WI-GT3 Scheda tecnica(PDF) 9 Page - Catalyst Semiconductor |
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CAT24C208WI-GT3 Scheda tecnica(HTML) 9 Page - Catalyst Semiconductor |
9 / 13 page CAT24C208 9 Doc No. 1044, Rev. F © 2006 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice DSP Interface The DSP interface is similar to I2C bus serial interface. Without the segment pointer, the maximum accessible memory space is 256 bytes of segment 00h only. In the Figure 15. Random Access Read T R A T S0 0 0 0 0 1 0 1K C AS S E R D D A 0 A - 7 AK C AT R A T S1 0 0 0 0 1 0 1K C AA T A DK C A O NP O T S Figure 12. Sequential Read Figure 17. Byte Write Figure 14. Page Write T R A T S0 0 0 0 0 1 0 1K C AS S E R D D A 0 A - 7 AK C AT R A T S1 0 0 0 0 1 0 1K C A0 A T A DK C A. . . . .N A T A DK C A O NP O T S T R A T S0 0 0 0 0 1 0 1K C AS S E R D D A 0 A - 7 AK C AA T A DK C AP O T S T R A T S0 0 0 0 0 1 0 1K C AS S E R D D A 0 A - 7 AK C A0 A T A DK C A. . . . . .5 1 A T A DK C AP O T S The segment pointer is used to expand the available DSP port addressable memory to 1k bytes, divided into four segments of 256 bytes each. The four segments are Figure 11. Random Access Read Figure 16. Sequential Read Figure 13. Byte Write Figure 18. Page Write T R A T S0 0 0 0 0 1 1 0K C AS x x x x x x 1S0 S S E R D D A t n e m g e SK C A T R A T S0 0 0 0 0 1 0 1K C AS S E R D D A 0 A - 7 AK C AT R A T S1 0 0 0 0 1 0 1K C AA T A DK C A O NP O T S T R A T S0 0 0 0 0 1 1 0K C AS x x x x x x 1S0 S S E R D D A t n e m g e SK C A T R A T S0 0 0 0 0 1 0 1K C AS S E R D D A 0 A - 7 AK C AT R A T S1 0 0 0 0 1 0 1K C A0 A T A DK C A. . . . . . .N A T A DK C A O NP O T S T R A T S0 0 0 0 0 1 1 0K C AS x x x x x x 1S0 S S E R D D A t n e m g e SK C A T R A T S0 0 0 0 0 1 0 1K C AS S E R D D A 0 A - 7 AK C A0 A T A DK C A. . . . . .5 1 A T A DK C AP O T S T R A T S0 0 0 0 0 1 1 0K C AS x x x x x x 1S0 S S E R D D A t n e m g e SK C A T R A T S0 0 0 0 0 1 0 1K C AS S E R D D A 0 A - 7 AK C AA T A DK C AP O T S sequential mode the wrap around will be in the same segment also. Figures 11 to 14 show the read and write on the DSP Port. selected by two bits S 1S0 = 00, 01, 10, 11 in the segment address. Figures 15 to 18 show the random read, sequential read, byte write and page write. |
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