1893YI-10LF IDT, 1893YI-10LF Datasheet - Page 90

• Manufacturer Part Number: 1893YI-10LF
• Description: Ethernet ICs 3.3V 10/100 BASE TX INTEGRATED PHYCEIVER
• Manufacturer: IDT

Specifications of 1893YI-10LF

• Rohs: yes
• Part # Aliases: ICS1893YI-10LF

8.11.7 Invalid Error Code Test (bit 16.2)
8.11.8 ICS Reserved (bit 16.1)
8.11.9 Stream Cipher Disable (bit 16.0)
ICS1893 Rev C 6/6/00
The Invalid Error Code Test bit allows an STA to force the ICS1893 to transmit symbols that are typically
classified as invalid. The purpose of this test bit is to permit thorough testing of the 4B/5B encoding and the
serial transmit data stream by allowing generation of bit patterns that are considered invalid by the ISO/IEC
4B/5B definition.
When this bit is logic:
•
•
Table 8-17.
See
The Stream Cipher Disable bit allows an STA to control whether the ICS1893 employs the Stream Cipher
Scrambler in the transmit and receive data paths. When this bit is set to logic:
•
•
Note:
Symbol
Zero, the ISO/IEC defined 4B/5B translation takes place.
One – and the TXER signal is asserted by the MAC/repeater – the MII input nibbles are translated
according to
Zero, the Stream Cipher Encoder and Decoder are both enabled for normal operations.
One, the Stream Cipher Encoder and Decoder are disabled. This action results in an unscrambled data
stream (for example, the ICS1893 transmits unscrambled IDLES, and so forth.
V (S)
ICS1893 Data Sheet - Release
Section 8.11.2, “ ICS Reserved (bits 16.14:11)”
V
V
V
V
H
V
V
R
V
V
K
V
T
J
I
The Stream Cipher Scrambler can be used only for 100-MHz operations.
Invalid Code
Invalid Code
Invalid Code
Invalid Code
Error
Invalid Code
Invalid Code
ESD
Invalid Code
ESD
Invalid Code
SSD
Invalid Code
Invalid Code
SSD
Idle
Invalid Error Code Translation Table
Table
Meaning
8-17.
Copyright © 2000, Integrated Circuit Systems, Inc.
All rights reserved.
MII Input
Nibble
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
Translation
00000
00001
00010
00011
00100
00101
00110
00111
00000
01101
01100
10001
10000
11001
11000
11111
90
, the text for which also applies here.
Chapter 8 Management Register Set
June, 2000