LAN8700 datasheet(39/74 Pages) MICROCHIP

39 / 74 page

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DS00002260A-page 39

LAN8700/LAN8700i

TABLE 5-40:

Address

Name

Description

Mode

Default

26.15:0

Sym_Err_Cnt

100Base-TX receiver-based error register that

increments when an invalid code symbol is received

including IDLE symbols. The counter is incremented

only once per packet, even when the received packet

contains more than one symbol error. The 16-bit

incremented beyond that value. This register is cleared

on reset, but is not cleared by reading the register. It

does not increment in 10Base-T mode.

TABLE 5-41:

Address

Name

Description

Mode

Default

27.15

AMDIXCTRL

HP Auto-MDIX control

0 - Auto-MDIX enable

1 - Auto-MDIX disabled (use 27.13 to control channel)

27.14

Reserved

27.13

CH_SELECT

Manual Channel Select

0 - MDI -TX transmits RX receives

1 - MDIX -TX receives RX transmits

27.12

Reserved

Write as 0. Ignore on read.

27:11

SQEOFF

Disable the SQE (Signal Quality Error) test (Heartbeat):

0 - SQE test is enabled.

1 - SQE test is disabled.

RW,

NASR

27.10:5

Reserved

Write as 0. Ignore on read.

000000

27.4

XPOL

Polarity state of the 10Base-T:

0 - Normal polarity

1 - Reversed polarity

27.3:0

Reserved

XXXXb

TABLE 5-42:

Address

Name

Description

Mode

Default

28.15:0

Reserved

Do not write to this register. Ignore on read.

N/A

TABLE 5-43:

Address

Name

Description

Mode

Default

29.15:8

Reserved

Ignore on read.

RO/

29.7

INT7

1 = ENERGYON generated

0 = not source of interrupt

RO/

29.6

INT6

1 = Auto-Negotiation complete

0 = not source of interrupt

RO/

29.5

INT5

1 = Remote Fault Detected

0 = not source of interrupt

RO/

29.4

INT4

1 = Link Down (link status negated)

0 = not source of interrupt

RO/

29.3

INT3

1 = Auto-Negotiation LP Acknowledge

0 = not source of interrupt

RO/

29.2

INT2

1 = Parallel Detection Fault

0 = not source of interrupt

RO/

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