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UPD360 датащи(PDF) 148 Page - Microchip Technology |
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UPD360 датащи(HTML) 148 Page - Microchip Technology |
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148 / 221 page ![]() UPD360 DS00002084C-page 148 2016-2017 Microchip Technology Inc. 11.4.2.12 RX Last GoodCRC Packet Low Byte Register (RX_LAST_GCRC_PKT_LO) 11.4.2.13 RX Message ID Stored Register (RX_MSG_ID_STORED) This register indicates if a last message ID was stored for each SOP type. A write to the appropriate bit will clear the last stored message ID for the SOP type indicated. When cleared, the next packet received for the SOP type will not be considered a duplicate. Software should clear the appropriate bit when it processes a Soft Reset. Bits in this register are set by hardware and must be cleared by software. This register is also cleared when software issues a SW_RESET or PD_RESET via the Reset Control Register (RESET_CTL). 11.4.2.14 RX Maximum Packet Size Register (RX_MAX_SIZE) The value of this register sets the maximum receive packet size, including the 4 bytes of CRC. Address: 1A4Bh Size: 8 bits Bits Description Type Default 7:0 RX_LAST_GCRC_PKT_LO Bits [7:0] of received GoodCRC message. This register is only valid when auto-retry is enabled. Since GoodCRC mes- sage in auto-retry mode is not stored in the RX queue, this register provides a means for software to examine the last GoodCRC message received. RO 00h Address: 1A4Ch Size: 8 bits Bits Description Type Default 7:5 RESERVED RO - 4:0 RX_MSG_ID_STORED This field indicates that a last message ID was stored for the SOP type. Bit 0: SOP Bit 1: SOP' Bit 2: SOP'' Bit 3: SOP'_Debug Bit 4: SOP''_Debug W1C 00000b Address: 1A4Dh Size: 8 bits Bits Description Type Default 7:0 RX_MAX_SIZE Maximum receive packet size including the 4 byte CRC. R/W 22h |
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