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HM17CM256 bảng dữ liệu(PDF) 62 Page - Hynix Semiconductor |
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HM17CM256 bảng dữ liệu(HTML) 62 Page - Hynix Semiconductor |
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62 / 111 page ![]() HM17CM256 - 62 - (34-12) Boosting coefficient setting CS RS RD WR RE2 RE1 RE0 D7 D6 D5 D4 D3 D2 D1 D0 0 1 1 0 0 0 0 1 1 0 1 * VU2 VU1 VU0 ( reset :{VU2~VU0}=0H read address :DH) * : ”Don’t care” coefficient setting of boosting circuit VU2 VU1 VU0 Boosting multiple 0 0 0 No boosting * 0 0 1 2 times boosting operation 0 1 0 3 times boosting operation 0 1 1 4 times boosting operation 1 0 0 5 times boosting operation 1 0 1 6 times boosting operation 1 1 0 7 times boosting operation 1 1 1 forbidden *VREG amplifier gain is 1. (34-13) Bias setting register CS RS RD WR RE2 RE1 RE0 D7 D6 D5 D4 D3 D2 D1 D0 0 1 1 0 0 0 0 1 1 1 0 * B2 B1 B0 ( reset :{B2~B0}=0H read address : EH) * : ”Don’t care” The bias ratio is selected by this register. 1/10, 1/9, 1/8, 1/7, 1/6, 1/5 biases can be selected by B2, B1 and B0 register. B2 B1 B0 bias 0 0 0 Operating under 1/9 bias 0 0 1 Operating under 1/8 bias 0 1 0 Operating under 1/7 bias 0 1 1 Operating under 1/6 bias 1 0 0 Operating under 1/5 bias 1 0 1 Operating under 1/10 bias 1 1 0 forbidden 1 1 1 forbidden (34-14)RE flag state register setting. CS RS RD WR RE2 RE1 RE0 D7 D6 D5 D4 D3 D2 D1 D0 0 1 1 0 0/1 0/1 0/1 1 1 1 1 TST0 RE2 RE1 RE0 ( reset :{TST0, RE2, RE1, RE0}=0H read address :FH) Setting the register of command extension register(RE2, RE1, RE0). When accessing command register, the extension register corresponding flag should be set first, and then access it. The TST0 register is that for test, and so please set to “0”. |
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