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Description: The D12 PHILIPS chip is a parallel bus and a local high-speed DMA transfer capability USB interface device. D12 chip provides three endpoints, each endpoint has input and output numbers, one each endpoint, and endpoint 2 also provides 4 ways of data transfer methods. Following on the D12' s firmware programming for discussion, D12 firmware needs to occupy a single chip hardware interrupt (INT0 or INT1) resources for the response D12 issued interrupt request.
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- [51v2] - Philips D12 firmware of the AT89C52
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D12_USB固件编程.doc
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