CS8952 datasheet(52/82 Pages) CIRRUS

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CS8952

CrystalLAN™ 100BASE-X and 10BASE-T Transceiver

6.15

Descrambler Key Initialization Register - Address 16h

Load

Reserved

Descrambler Initialization Key

765

4321

Descrambler Initialization Key

BIT

NAME

TYPE

RESET

DESCRIPTION

Load

Read/Set

When this bit is set, the descrambler will be loaded

with the value in the Descrambler Initialization Key

field. When the load is complete, this bit will clear

automatically.

14:11 Reserved

Read Only

0000

These bits should be read as don’t cares and, when

written, should be written to 0.

10:0

Descrambler Initial-

ization Key

Read/Write Reset value is

dependent on the

PHY Address field

of the Self Status

19h).

This register allows the Descrambler to be loaded

with a user-definable key sequence. A value of 000h

has the effect of bypassing the descrambler function.

This is valuable for testing purposes to allow a deter-

ministic response to test stimulus without a synchro-

nization delay.

Note: This field is disabled, and writes to this bit are

ignored when the National Compatibility Mode bit of

the 10BASE-T Configuration Register (address 1Ch)

is set.

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