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LAN8820I Datasheet(PDF) 57 Page - Microchip Technology

Part # LAN8820I
Description  RGMII 10/100/1000 Ethernet Transceiver
PDF  83 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

LAN8820I Datasheet(HTML) 57 Page - Microchip Technology

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 2009-2015 Microchip Technology Inc.
DS00001871B-page 57
LAN8820/LAN8820I
4.3.7
CRC ERROR COUNTER HIGH REGISTER
4.3.8
CRC ERROR COUNTER MID REGISTER
4.3.9
CRC ERROR COUNTER LOW REGISTER
Index:
U5
Size:
16 bits
Bits
Description
Type
Default
15:0
CRCERR[47:32]
Counts the CRC errors, which are generated by the CRC checker circuit.
Contains the 16 upper bits of the 48-bit counter.
Reading this register resets all bits in the CRC Error Counter.
RO/
RC
0000h
Note:
The 48-bit CRC error counter is split across 3 registers. In order to read the counter correctly, the registers
must be read in the following order: , CRC Error Counter Mid Register, CRC Error Counter High Register.
After reading the high register, the counter will be automatically cleared.
Index:
U6
Size:
16 bits
Bits
Description
Type
Default
15:0
CRCERR[31:16]
Counts the CRC errors, which are generated by the CRC checker circuit.
Contains the 16 middle bits of the 48-bit counter.
RO
0000h
Note:
The 48-bit CRC error counter is split across 3 registers. In order to read the counter correctly, the registers
must be read in the following order: , CRC Error Counter Mid Register, CRC Error Counter High Register.
After reading the high register, the counter will be automatically cleared.
Index:
U7
Size:
16 bits
Bits
Description
Type
Default
15:0
CRCERR[15:0]
Counts the CRC errors, which are generated by the CRC checker circuit.
Contains the 16 low-order bits of the 48-bit counter.
RO
0000h
Note:
The 48-bit CRC error counter is split across 3 registers. In order to read the counter correctly, the registers
must be read in the following order: , CRC Error Counter Mid Register, CRC Error Counter High Register.
After reading the high register, the counter will be automatically cleared.



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