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MCP2510-/ST 数据表(PDF) 58 Page - Microchip Technology |
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MCP2510-/ST 数据表(HTML) 58 Page - Microchip Technology |
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58 / 80 page ![]() MCP2510 DS21291F-page 58 © 2007 Microchip Technology Inc. FIGURE 11-1: BIT MODIFY TABLE 11-1: SPI INSTRUCTION SET FIGURE 11-2: READ INSTRUCTION FIGURE 11-3: BYTE WRITE INSTRUCTION Mask byte Data byte Previous Register Contents Resulting Register Contents 00 1 1 11 00 XX 1 1 00 XX 01 0 1 10 00 01 1 1 00 00 Instruction Name Instruction Format Description RESET 1100 0000 Resets internal registers to default state, set configuration mode READ 0000 0011 Read data from register beginning at selected address WRITE 0000 0010 Write data to register beginning at selected address RTS (Request To Send) 1000 0nnn Sets TXBnCTRL.TXREQ bit for one or more transmit buffers Read Status 1010 0000 Polling command that outputs status bits for transmit/receive functions Bit Modify 0000 0101 Bit modify selected registers 1000 0nnn Request to send for TXB0 Request to send for TXB1 Request to send for TXB2 SO SI SCK CS 0 23456 789 10 11 12 13 14 15 16 17 18 19 20 21 22 1 01 0 0 0 0 0 1 A7 654 1 A0 76543210 instruction address byte data out high impedance 23 32 don’t care SO SI SCK CS 0 23456789 10 11 12 13 14 15 16 17 18 19 20 21 22 1 0 0 0 0 0 0 0 A7 654 1A0 7654 3 210 instruction high impedance 23 32 1 address byte data byte |
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