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MCP3564-E/ST 数据表(PDF) 70 Page - Microchip Technology |
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MCP3564-E/ST 数据表(HTML) 70 Page - Microchip Technology |
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70 / 108 page ![]() MCP3561/2/4 DS20006181C-page 70 2019-2021 Microchip Technology Inc. FIGURE 6-11: SPI Static Read with Communication CRC Enabled. FIGURE 6-12: SPI Incremental Read with Communication CRC Enabled. CRC Checksum ADDR Roll-over ADDRESS SET Don’t Care SCK SDI SDO CS High-Z 8x ADDR CMD[7:6] + ADDR + 01 Complete READ sequence including STATUS Byte = First Message for CRC Calculation ... ... Don’t Care COMMAND BYTE CRC Checksum ADDR CRC Checksum 16x or 32x Depending on CRC format 16x or 32x Depending on CRC format Depends on ADDR Depends on ADDR STATUS BYTE 0 New message New checksum First checksum Don’t Care SCK SDI SDO CS 8x Depends on ADDR ADDR ... ADDR = 0xF CMD[7:6] + ADDR + 11 Complete READ sequence including STATUS Byte = First Message for CRC Calculation ADDR + 1 Depending on ADDR+1 ... 16x Depends on Data Format ADDR = 0x0 ... New Message ADDR = 0x1 8x ... 24x ADDR = 0xF Don’t Care COMMAND BYTE CRC Checksum CRC Checksum 16x or 32x Depending on CRC format 16x or 32x Depending on CRC format CRC Checksum (not part of register map) New Checksum First Checksum STATUS BYTE ADDR ... 0xF Complete READ sequence Roll-over ADDRESS SET 0x0 ... High-Z 0 |
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