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GP2021 数据表(PDF) 50 Page - Mitel Networks Corporation |
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GP2021 数据表(HTML) 50 Page - Mitel Networks Corporation |
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50 / 62 page ![]() 50 GP2021 MCLK DBE D<15:0> A<22:20> NEEPROM/NSPARE_CS NW ARM data dbHnwH nwHdbL adVneeL neeLnwL neeL nwL nwH A<9:0> EEPROM/SPARE data D<15:0> NRD MCLK NEEPROM/NSPARE_CS A<22:20> DBE neeLmcL nrdLmcL adVneeL nrdHdbH mcLnrdH A<9:0> Fig. 27 : ARM Mode RAM Read Description Symbol Min Max Units NEEPROM Low τ neeL 348 ns NEEPROM Low to NW0–3 τ neeLnwL 11 ns NW0–3 Low τ nwL 1 50 ns NW0–3 High τ nwH 200 ns DBE High to NW0–3 High τ dbHnwH 150 ns NW0–3 High to DBE Low τ nwHdbL 168 ns Address Valid to NEEPROM Low τ adVneeL 2.5 9 ns Fig. 27 : ARM Mode RAM Read Description Symbol Min Max Units Notes NEEPROM Low to MCLK Low τ neeLmc L 124.5 ns 1 NRD Low to MCLK Low τ nrdLmcL 117 ns 1 NRD High to DBE High τ nrdHdbH 65 ns MCLK Low to NRD High τ mcLnrdH 2.5 10 ns Address Valid to NEEPROM Low τ adVneeL 2.5 9 ns Note: 1. +50ns / extra wait state |
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