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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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CS44210 датащи(PDF) 33 Page - Cirrus Logic |
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CS44210 датащи(HTML) 33 Page - Cirrus Logic |
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33 / 38 page  CS44210 DS539PP1 33 7.3.2 Reading in SPI Figure 10 shows the operation of the control port in SPI format. To read to a register, bring CS low. The first 7 bits on CDIN form the chip address and must be 0010000. The eighth bit is a read/write indicator (R/W), which must be high to read. The CDOUT line will then output the data from the register des- ignated by the MAP. To read multiple registers, keep CS low and continue providing clocks on CCLK. End the read transaction by setting CS high. The CDOUT line will tri-state once CS goes high. 7.4 Memory Address Pointer (MAP) 7.4.1 INCR (Auto Map Increment Enable) Default = ‘0’ 0 - Disabled 1 - Enabled 7.4.2 MAP3-0 (Memory Address Pointer) Default = ‘0000’ LSB byte 1 byte n R/W ADDRESS CHIP CDIN CCLK CS 0010000 MSB DATA CDOUT Figure 10. Control Port Timing, SPI Format (Read) 76 5432 10 INCR Reserved Reserved Reserved MAP3 MAP2 MAP1 MAP0 00 0000 00 |
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