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12ASX2 Datasheet(PDF) 30 Page - Infineon Technologies AG |
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12ASX2 Datasheet(HTML) 30 Page - Infineon Technologies AG |
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30 / 147 page  EiceDRIVER ™ SIL 1EDI2002AS Functional Description Datasheet 30 Rev. 3.1, 2015-07-30 Hardware Description 2.4.4.5 Protocol Description 2.4.4.5.1 Command Catalog Table 2-3 gives an overview of the command catalog supported by the device. The full description of the commands and of the corresponding request and answer messages is provided in the following sections. An overview of the commands is given Figure 2-10. Figure 2-10 SPI Commands Overview 2.4.4.5.2 Word Convention In order to simplify the description of the SPI commands, the following conventions are used (Table 2-4). Table 2-3 SPI Command Catalog Acronym Short Description Valid in Mode ENTER_CMODE Enters into Configuration Mode. OPM0, OPM1 ENTER_VMODE Enters into Verification Mode. OPM2 EXIT_CMODE Leaves Configuration Mode to enter into Configured Mode. OPM2 READ Reads the register value at the specified address. All NOP Triggers no action in the device (equivalent to a “nop”). All WRITEH Update the most significant byte of the internal write buffer. All WRITEL Updates the least significant byte of the internal write buffer, and copies the contents of the complete buffer into the addressed register. The write buffer is cleared afterwards. All (with restrictions) Table 2-4 Word Convention Acronym Value Va(REGISTER) Value of register REGISTER P B Parity Bit Message P ENTER_CMODE 000 11 000 1 0000000 ENTER_VMODE 000 1 000 1 0 1 000000 EXIT_CMODE 000 1 00 1 000 1 00000 NOP 000 1 0 1 00000 1 0000 READ 0000 A4 A3 A2 A1 A0 0 1 0 1 0 1 X WRITEH 0 1 000 1 0 D15 D14 D13 D12 D11 D10 D9 D8 X WRITEL 1 0 1 0 A4 A3 A2 A1 A0 D7 D6 D5 D4 D3 D2 X Data Command |
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