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LAN8820 Datasheet(PDF) 53 Page - Microchip Technology |
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LAN8820 Datasheet(HTML) 53 Page - Microchip Technology |
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53 / 83 page  2009-2015 Microchip Technology Inc. DS00001871B-page 53 LAN8820/LAN8820I 4.3 Advanced PHY Registers The advanced PHY registers are accessed using the following procedure: 1. Write to the Advanced Register Address Port with the Read bit set high, and the address of the desired advanced register in the Register Address field. 2. Read the contents of the selected register from Advanced Register Read Data Port. 4.3.1 ADVANCED REGISTER MAPPING Note: The advanced registers cannot be written. All advanced registers are comprised of read-only (RO), or read- to-clear (RC) bits. TABLE 4-3: ADVANCED REGISTER MAPPING REGISTER NUMBER REGISTER NAME U0 User Status 1 Register U1 User Status 2 Register U2 Receive Error-Free Packets Counter High Register U3 Receive Error-Free Packets Counter Mid Register U4 Receive Error-Free Packets Counter Low Register U5 CRC Error Counter High Register U6 CRC Error Counter Mid Register U7 U8 Receive Error During Data Counter Register U9 Receive Error During Idle Counter Register U10 Transmit Packet Counter High Register U11 Transmit Packet Counter Mid Register U12 Transmit Packet Counter Low Register |
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