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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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RXB0D2 датащи(PDF) 25 Page - Microchip Technology |
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RXB0D2 датащи(HTML) 25 Page - Microchip Technology |
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25 / 92 page  2003-2012 Microchip Technology Inc. DS21801G-page 25 MCP2515 4.4.3 CONFIGURED AS DIGITAL OUTPUT When used as digital outputs, the BFPCTRL.BxBFM bit must be cleared and BFPCTRL.BnBFE must be set for the associated buffer. In this mode, the state of the pin is controlled by the BFPCTRL.BnBFS bits. Writing a ‘1’ to the BnBFS bit will cause a high level to be driven on the associated buffer full pin, while a ‘0’ will cause the pin to drive low. When using the pins in this mode, the state of the pin should be modified only by using the Bit Modify SPI command to prevent glitches from occurring on either of the buffer full pins. TABLE 4-1: CONFIGURING RXNBF PINS FIGURE 4-2: RECEIVE BUFFER BLOCK DIAGRAM BnBFE BnBFM BnBFS Pin Status 0XX Disabled, high-impedance 11X Receive buffer interrupt 100 Digital output = 0 101 Digital output = 1 Acceptance Mask RXM1 Acceptance Filter RXF2 Acceptance Filter RXF3 Acceptance Filter RXF4 Acceptance Filter RXF5 Acceptance Mask RXM0 Acceptance Filter RXF0 Acceptance Filter RXF1 Identifier Data Field Data Field Identifier Note: Messages received in the MAB are intially applied to the mask and filters of RXB0. In addition, only one filter match occurs (e.g., if the message matches both RXF0 and RXF2, the match will be for RXF0 and the message will be moved into RXB0). A c c e p t A c c e p t R X B 0 R X B 1 M A B |
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