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AP0100CS 数据表(PDF) 45 Page - ON Semiconductor |
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AP0100CS 数据表(HTML) 45 Page - ON Semiconductor |
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45 / 73 page ![]() AP0100CS/D Rev. 6, Pub. 1/16 EN 45 ©Semiconductor Components Industries, LLC,2016. AP0100CS HDR: Image Signal Processor (ISP) Protocol Single READ from Random Location Figure 32 shows the typical READ cycle of the host to the AP0100CS. The first two bytes sent by the host are an internal 16-bit register address. The following 2-byte READ cycle sends the contents of the registers to host. Figure 32: Single READ from Random Location Single READ from Current Location Figure 33 shows the single READ cycle without writing the address. The internal address will use the previous address value written to the register. Figure 33: Single Read from Current Location Sequential READ, Start from Random Location This sequence (Figure 34) starts in the same way as the single READ from random loca- tion (Figure 32 on page 45). Instead of generating a no-acknowledge bit after the first byte of data has been transferred, the master generates an acknowledge bit and continues to perform byte READs until “L” bytes have been read. Figure 34: Sequential READ, Start from Random Location S = start condition P = stop condition Sr = restart condition A = acknowledge A = no-acknowledge slave to master master to slave Slave Address 0 S A Reg Address[15:8] A Reg Address[7:0] Slave Address A A 1 Sr Read Data [15:8] P Previous Reg Address, N Reg Address, M M+1 A Read Data [7:0] A Slave Address 1 S A Read Data [15:8] Slave Address A 1 S P Read Data [15:8] P Previous Reg Address, N Reg Address, N+1 N+2 A A Read Data [7:0] A Read Data [7:0] A Read Data (15:8) A A Read Data (15:8) A Read Data (7:0) A Slave Address 0 S Sr A Reg Address[15:8] A Reg Address[7:0] A Read Data Slave Address Previous Reg Address, N Reg Address, M M+1 M+2 M+1 M+3 A 1 M+L-2 M+L-1 M+L A P A Read Data (15:8) A Read Data (7:0) A Read Data (15:8) A Read Data (7:0) A Read Data (7:0) |
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