Chapter 3

ICS1893 Enhanced Features

ICS1893 Rev B 9/10/99

September, 1999

15

ICS1893 - Release

Copyright © 1999, Integrated Circuit Systems, Inc.

All rights reserved.

Note:

1.

There are new registers and bits. For example:

a. Registers 7 and 8 are new (that is, the ICS1890 does not have these registers).

b. Registers 20 through 31 are new ICS test registers.

2.

For some bits (such as the model number and revision number bits), the default values are changed.

Table 3-1.

Summary of Differences between ICS1890 and ICS1893 Registers

Register.

Bit(s)

ICS1890

ICS1893

Function

Default

Function

Default

1.6

Reserved

0b (always)

Management Frame Preamble

Suppression

0b

3.9:4

Model Number

000010b

Model Number

000011b

3.3:0

Revision Number

0011b

Revision Number

0000b

6.2

Next Page Able

0b (always)

Next Page Able

1b

7.15:0

Not applicable (N/A)

N/A

Auto-Negotiate Next Page

Transmit Register

2001h

8.15:0

N/A

N/A

Auto-Negotiate Next Page

Link Partner Ability

0000h

9.15:0

through

15.15:0

IEEE reserved.

0000h

IEEE reserved.

Note: Although the default value is

changed, this response more

accurately reflects an MDIO

access to registers 9–15.

FFFFh

18.15

Reserved

0b

Remote Jabber

0b

19.1

Reserved

0b

Automatic 10Base-T Power Down

1b

20.15:0

through

31.15:0

N/A

N/A

ICS test registers.

(There is no claim of backward

compatibility for these registers.)

See specific

registers and

bits.