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ti dsp5502和SST39VF400A flash 這樣連對嗎?? |
| 作者:zxyabc56 欄目:DSP技術 |
請高手看看
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| 2樓: | >>參與討論 |
| 作者: yang96381 于 2006/6/5 16:08:00 發(fā)布:
呵呵,錯啦,地址 |
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| 3樓: | >>參與討論 |
| 作者: zxyabc56 于 2006/6/6 9:36:00 發(fā)布:
應該怎么連,請樓上的指點下,謝謝了 |
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| 4樓: | >>參與討論 |
| 作者: iversonma 于 2006/6/6 9:51:00 發(fā)布:
地址線沒有問題~你仔細看芯片資料 在這個資料里面~ SPRU621F 2.2 External Address Outputs The VC5501/5502 EMIF works with two buses: an internal address bus A[19:0] and external address bus A[21:2]. The address shown on the external address bus is a shifted version of the internal address bus. The EMIF automatically shifts its internal address bus to match the data bus size of the MEMORY DEVICE being used. The EMIF automatically shifts its internal address bus to match the data bus size of the MEMORY DEVICE being used. The address shifting is described in Table 2−5 for the asynchronous configuration. The address bus of the external MEMORY DEVICE should always be connected to the EMIF address bus starting with pin A2. For example, address lines A[n:0] of an 8-, 16- or 32-bit asynchronous MEMORY DEVICE, where n is the NUMBER of address lines on the MEMORY DEVICE, should be connected to address lines A[n+2:2] on the EMIF. 5502分為內(nèi)部地址和外部地址,外接的地址只有a【2 21】,內(nèi)部地址左右三個 8-bit Internal Address A [19:0] 16-bit Internal Address A [20:1] 32-bit Internal Address A [21:2] 系統(tǒng)會根據(jù)外接的數(shù)據(jù)位數(shù)來調(diào)整內(nèi)部地址和外部地址的差別~ |
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| 5樓: | >>參與討論 |
| 作者: wym520 于 2006/6/10 15:37:00 發(fā)布:
你好 你的圖不正確,應該把地址線對應起來 |
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| 6樓: | >>參與討論 |
| 作者: longzu510 于 2006/6/11 10:54:00 發(fā)布:
RESET#接NC是什么意思??? RESET#接NC是什么意思??? |
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