ics1893ck-40 Integrated Device Technology, ics1893ck-40 Datasheet - Page 64

• Manufacturer Part Number: ics1893ck-40
• Description: 3.3-v 10base-t/100base-tx Integrated Phyceiver
• Manufacturer: Integrated Device Technology

7.8 Register 6: Auto-Negotiation Expansion Register
7.8.1 IEEE Reserved Bits (bits 6.15:5)
ICS1893CK-40, Rev. C, 06/02/09
Table 7-13
Auto-Negotiation process.
Note:
Table 7-13. Auto-Negotiation Expansion Register (register 6 [0x06])
† As per the IEEE Std 802.3u, during any write operation to any bit in this register, the STA must write the default value
The ISO/IEC specification reserves these bits for future use. When an STA:
•
•
ICS uses some reserved bits to invoke auxiliary functions. To ensure proper operation of the
ICS1893CK-40, an STA must maintain the default value of these bits. Therefore, IDT recommends that an
STA always write the default value of any reserved bits during all management register write operations.
Reserved bits 5.15:5 are Command Override Write (CW) bits. When the Command Register Override bit
(bit 16.15) is logic:
•
•
6.15
6.14
6.13
6.12
6.11
6.10
6.9
6.8
6.7
6.6
6.5
6.4
6.3
6.2
6.1
6.0
Bit
to all Reserved bits.
Reads a reserved bit, the ICS1893CK-40 returns a logic zero.
Writes to a reserved bit, the STA must use the default value specified in this data sheet.
Zero, the ICS1893CK-40 isolates all STA writes to CW bits.
One, an STA can modify the value of these bits
IEEE reserved
IEEE reserved
IEEE reserved
IEEE reserved
IEEE reserved
IEEE reserved
IEEE reserved
IEEE reserved
IEEE reserved
IEEE reserved
IEEE reserved
Parallel detection fault
Link partner Next Page
able
Next Page able
Page received
Link partner
Auto-Negotiation able
For an explanation of acronyms used in
ICS1893CK-40 Data Sheet - Release
lists the bits for the Auto-Negotiation Expansion Register, which indicates the status of the
Definition
Copyright © 2009, Integrated Device Technology, Inc.
Always 0
Always 0
Always 0
Always 0
Always 0
Always 0
Always 0
Always 0
Always 0
Always 0
Always 0
No Fault
Link partner is not Next
Page able
Local device is not Next
Page able
Next Page not received
Link partner is not
Auto-Negotiation able
When Bit = 0
All rights reserved.
64
Table
7-13, see
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Multiple technologies
detected
Link partner is Next Page
able
Local device is Next Page
able
Next Page received
Link partner is
Auto-Negotiation able
When Bit = 1
Chapter 1, “Abbreviations and
Chapter 7 Management Register Set
cess
Ac-
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
CW
RO
RO
RO
RO
RO
LH
SF
LH
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Acronyms”.
fault
De-
0†
0†
0†
0†
0†
0†
0†
0†
0†
0†
0†
June 2009
0
0
1
0
0
Hex
0
0
0
4