ICS1889 datasheet(12/35 Pages) ICST

12 / 35 page

ICS1889

PHY Identifier Register (register 2)

Unique Identifier (OUI), Manufacturers Model Number and

Revision Number. Integrated Circuit Systemss OUI is used as

the default for registers 2 and 3. These values may be

overridden using the Command Override bit (16:15).

Organizationally Unique Identifier

bits 3-18(bits 15-0)

This field contains the lowest 16 bits of the IEEE OUI

excluding bits 0, 1, and 2. Bit 3 of the OUI maps to bit 15 of

the register.

OUI Formatting Information

The ICS OUI is shown below with information on mapping

the OUI value into registers 2 and 3.

Octet Format:

Third octet

Second octet

First octet

Binary Format:

0000 0000 0000 0101 0111 1101







lsb

msb

lsb

msb lsb

msb

(I/G)

IEEE Standard 802 Lettered Format

0000 0000 0000 0101 0111 1101

abcd

efgh

ijkl

mnop

qrst

uvwx

Model and Revision Information

Model

Part

ICS1889

ICS1890

The revision number will be incremented each time the silicon

is significantly revised.

These two registers can always be read and may be written by

setting the Command Override bit in the Configuration

power-up and reset they are set to Integrated Circuit

Systemss OUI. By allowing these registers to be written, a

systems vendor may substitute their own OUI.

PHY Identifier Register (register 2)

BIT

Definition

When bit = 0

When bit = 1

Access

Default

OUI bit 3 | c

OUI bit 4 | d

OUI bit 5 | e

OUI bit 6 | f

OUI bit 7 | g

OUI bit 8 | h

OUI bit 9 | i

OUI bit 10 | j

OUI bit 11 | k

OUI bit 12 | l

OUI bit 13 | m

OUI bit 14 | n

OUI bit 15 | o

OUI bit 16 | p

OUI bit 17 | q

OUI bit 18 | r

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