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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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APR6016 датащи(PDF) 11 Page - Aplus Intergrated Circuits |
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APR6016 датащи(HTML) 11 Page - Aplus Intergrated Circuits |
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11 / 24 page  Preliminary APR6016 Data Sheet Voice Recording & Playback Device Page 11 Revision 1.0 Reading Digital Data Digital data is read from the device using the DIG_READ command. To read data you must send a DIG_READ com- mand immediately followed by 3012 don’t care bits during the same /CS cycle. The data previously stored in the specified sector will begin to appear on the DO pin after the current device status or SID and four buffer bits. The next 3004 bits are the previously stored data. The first bit shifted out is the first bit that was written. The last bit shifted out is the last bit that was written. There are four random don’t care bits follow- ing the 3004 bits of user data. An incomplete read of the sector is allowed. An incomplete read is defined a a read with less than 3032 clock cycles. All incomplete read cycles require one extra SCLK cycle after the /CS signal returns high. Figure 12 shows a timing diagram which describes the entire process for a complete sector read. All timing with the excep- tion of TpSCLK should adhere to the specifications given in Figure 4 and Figure 7. The TpSCLK specification is replaced by the DTpSCLK when reading digital data. The /BUSY pin indicates when a DIG_READ is taking place. Figure 12 Reading Digital Data /C S SCLK DI DO DIG_READ COMMAND 3012 don’t Care Bits Total 3032 clock cycles SID or CDS 3004 bits of previously stored data XX X X XX X X /BUSY |
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