V62SLASH12615-01XE-R datasheet(82/92 Pages) TI1

82 / 92 page

DP83848-EP

SLLSEC6D – SEPTEMBER 2012 – REVISED JUNE 2013

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9.3.10 10Base-T Status/Control Register (10BTSCR)

Table 9-21. 10Base-T Status/Control Register (10BTSCR), Address 0x1A

BIT

BIT NAME

DEFAULT

DESCRIPTION

10Base-T Serial Mode (SNI):

1 = Enables 10Base-T Serial Mode

0 = Normal Operation

10BT_SERIAL

Strap, RW

Places 10 Mb/s transmit and receive functions in Serial Network

Interface (SNI) Mode of operation. Has no effect on 100 Mb/s

operation.

14:12

RESERVED

0, RW

RESERVED: Must be zero

Squelch Configuration:

11:9

SQUELCH

100, RW

Used to set the Squelch ‘ON’ threshold for the receiver

Default Squelch ON is 330mV peak

In half-duplex mode, default 10BASE-T operation loops Transmit data

to the Receive data in addition to transmitting the data on the physical

medium. This is for consistency with earlier 10BASE2 and 10BASE5

LOOPBACK_10_D IS

0, RW

implementations which used a shared medium. Setting this bit

disables the loopback function.

This bit does not affect loopback due to setting BMCR[14].

Normal Link Pulse Disable:

LP_DIS

0, RW

1 = Transmission of NLPs is disabled

0 = Transmission of NLPs is enabled

Force 10Mb Good Link:

FORCE_LINK_10

0, RW

1 = Forced Good 10Mb Link

0 = Normal Link Status

RESERVED

0, RW

RESERVED: Must be zero

10Mb Polarity Status:

This bit is a duplication of bit 12 in the PHYSTS register. Both bits will

be cleared upon a read of 10BTSCR register, but not upon a read of

POLARITY

RO/LH

the PHYSTS register.

1 = Inverted Polarity detected

0 = Correct Polarity detected

RESERVED

0, RW

RESERVED: Must be zero

RESERVED

1, RW

RESERVED: Must be zero

Heartbeat Disable: This bit only has influence in half-duplex 10Mb

mode.

1 = Heartbeat function disabled

HEARTBEAT_DIS

0, RW

0 = Heartbeat function enabled

When the device is operating at 100Mb or configured for full duplex

operation, this bit will be ignored - the heartbeat function is disabled.

Jabber Disable:

Applicable only in 10BASE-T.

JABBER_DIS

0, RW

1 = Jabber function disabled

0 = Jabber function enabled

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