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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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W6100 데이터시트(PDF) 82 Page - WIZnet Co., Ltd |
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W6100 데이터시트(HTML) 82 Page - WIZnet Co., Ltd |
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82 / 149 page  W6100 – Hardwired Dual TCP/IP Stack Controller 82/149 5.2.2 Parallel BUS Data Read Figure 19 Parallel Mode Continuous Read Access Figure 19 shows N-Byte data read through parallel BUS. HOST asserts CSn to LOW during N- bytes data read and if it is done, HOST de-asserts CSn to HIGH. In read access, HOST should toggle WRn for controlling BUS and toggle RDn for reading DATA, every BUS transition. HOST transmits ‘00’ on ADDR[1:0] to indicate that ADDRH is on DAT[7:0], and then ‘01’ on ADDR[1:0] & ADDRL on DAT[7:0], ‘10’ on ADDR[1:0] & BS on DAT[7:0]. After transmitting three bytes, HOST transmits ‘11’ on ADDR[1:0] to read DATA on DAT[7:0]. If there are more than one byte DATA to read, HOST can transmit continuously ‘11’ on ADDR[1:0], and reads a DATA on DAT[7:0]. |
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