ICS1892YT IDT, Integrated Device Technology Inc, ICS1892YT Datasheet - Page 66
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ICS1892YT
Manufacturer Part Number
ICS1892YT
Description
Manufacturer
IDT, Integrated Device Technology Inc
Datasheet
1.ICS1892YT.pdf
(148 pages)
Specifications of ICS1892YT
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8.3 Register 1: Status Register
8.3.1 100Base-T4 (bit 1.15)
ICS1892, Rev. D, 2/26/01
Table 8-6
bits of data. There are two types of status bits: some report the capabilities of the ICS1892, and some
indicate the state of signals used to monitor internal circuits.
The STA accesses the Status Register using the Serial Management Interface. During a reset, the
ICS1892 initializes the Status Register bits to pre-defined, default values.
Note:
Table 8-6. Status Register (Register 1 [0x01])
† As per the IEEE Std 802.3u, during any write operation to any bit in this register, the STA must write the default value
to all Reserved bits.
The STA reads this bit to learn if the ICS1892 can support 100Base-T4 operations. Bit 1.15 of the ICS1892
is permanently set to logic zero, which informs an STA that the ICS1892 cannot support 100Base-T4
operations.
1.15
1.14
1.13
1.12
1.10
1.11
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
Bit
ICS1892 Data Sheet
100Base-T4
100Base-TX full duplex
100Base-TX half duplex Mode not supported
10Base-T full duplex
10Base-T half duplex
IEEE reserved
IEEE reserved
IEEE reserved
IEEE reserved
MF Preamble
suppression
Auto-Negotiation
complete
Remote fault
Auto-Negotiation ability
Link status
Jabber detect
Extended capability
For an explanation of acronyms used in
lists the bits for the Status Register, an interface between the ICS1892 and the STA that has 16
Definition
© 2000-2001, Integrated Circuit Systems, Inc.
All rights reserved.
Always 0. (Not supported.) N/A
Mode not supported
Mode not supported
Mode not supported
Always 0
Always 0
Always 0
Always 0
PHY requires MF
Preambles
Auto-Negotiation is in
process, if enabled
No remote Fault Detected
N/A
Link is invalid/down
No jabber condition
N/A
When Bit = 0
66
Table
8-5, see
Mode supported
Mode supported
Mode supported
Mode supported
N/A
N/A
N/A
N/A
PHY does not require
MF Preambles
Auto-Negotiation is
completed
Remote fault detected
Always 1: PHY has
Auto-Negotiation ability
Link is valid/established
Jabber condition
detected
Always 1: PHY has
extended capabilities
When Bit = 1
Chapter 1, “Abbreviations and
Chapter 8 Management Register Set
cess
Ac-
CW
CW
CW
CW
CW
CW
CW
CW
RO
RO
RO
RO
RO
RO
RO
RO
SF
LH
LH
LH
LL
February 26, 2001
–
–
–
–
–
–
–
–
–
–
–
–
Acronyms”.
fault
De-
0†
0†
0†
0†
0
1
1
1
1
0
0
0
1
0
0
1
Hex
7
8
0
9
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