DP83848H datasheet(47/72 Pages) NSC

Part #	DP83848H

Description	PHYTER짰 Mini - Extreme Temperature Single 10/100 Ethernet Transceiver

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7.2.2 False Carrier Sense Counter Register (FCSCR)

This counter provides information required to implement the “False Carriers” attribute within the MAU managed object

class of Clause 30 of the IEEE 802.3u specification.

7.2.3 Receiver Error Counter Register (RECR)

This counter provides information required to implement the “Symbol Error During Carrier” attribute within the PHY man-

aged object class of Clause 30 of the IEEE 802.3u specification.

Table 20. False Carrier Sense Counter Register (FCSCR), address 0x14

Bit

Bit Name

Default

Description

15:8

RESERVED

0, RO

RESERVED: Writes ignored, Read as 0

7:0

FCSCNT[7:0]

0, RO / COR

False Carrier Event Counter:

This 8-bit counter increments on every false carrier event. This

counter sticks when it reaches its max count (FFh).

Table 21. Receiver Error Counter Register (RECR), address 0x15

Bit

Bit Name

Default

Description

15:8

RESERVED

0, RO

RESERVED: Writes ignored, Read as 0

7:0

RXERCNT[7:0]

0, RO / COR

RX_ER Counter:

When a valid carrier is present and there is at least one occurrence

of an invalid data symbol, this 8-bit counter increments for each re-

ceive error detected. This event can increment only once per valid

carrier event. If a collision is present, the attribute will not incre-

ment. The counter sticks when it reaches its max count.

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