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UPD360 датащи(PDF) 134 Page - Microchip Technology |
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UPD360 датащи(HTML) 134 Page - Microchip Technology |
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134 / 221 page ![]() UPD360 DS00002084C-page 134 2016-2017 Microchip Technology Inc. 3 EN_FWTX Enable software issued transmission. This bit is effective only at the moment the GO bit is set by software and is intended to cover race conditions where it is not possible for software to back off from setting the GO bit in response to a valid RX. This bit is automatically held cleared by hardware if the RX Interrupt Status Register (RX_IRQ_STAT) indicates reception of a Hard Reset, or a Cable Reset, or if there is any data in the RX FIFO and, thus, software must set it prior to each transmission it wants to issue. When this bit is cleared, a software issued transmission will be aborted. Note: This is not an Abort bit. Clearing this bit will have no effect on a transmission that has already been issued to hardware. Such transmissions will be aborted automatically by hardware as appro- priate. To abort a transmission in progress, use the ABORT bit in the TX Control Register B (TX_CTL_B). Note: Setting of this bit does not prevent hardware issued transmissions. Note: This bit is reset by assertion of PD_RESET. R/W 0b 2:0 MSG_ID Message ID. This value is used to verify the expected message ID in the GoodCRC response. Note: Hardware will not insert this value into the TX message header. For proper normal operation, software must program the same value in bits[11:9] of message header. Note: Software must set this to zero when it processes a Hard Reset, Cable Reset or Soft Reset. R/W 000b Bits Description Type Default |
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