1893CFLFT IDT, 1893CFLFT Datasheet - Page 50

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

Specifications of 1893CFLFT

• Rohs: yes
• Part # Aliases: ICS1893CFLFT

7.3 Register 1: Status Register
7.3.1 100Base-T4 (bit 1.15)
ICS1893CK-40, Rev. C, 06/02/09
Table 7-6
ICS1893CK-40 and an STA. There are two types of status bits: some report the capabilities of the port, 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
ICS1893CK-40 initializes the Status Register bits to pre-defined, default values.
Note:
Table 7-6. 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
The STA reads this bit to learn if the ICS1893CK-40 can support 100Base-T4 operations. Bit 1.15 of the
ICS1893CK-40 is permanently set to logic zero, which informs an STA that the ICS1893CK-40 cannot
support 100Base-T4 operations.
1.15
1.14
1.13
1.12
1.10
1.11
Bit
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
to all Reserved bits.
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 Status Register bits. These 16 bits of data provide an interface between the
ICS1893CK-40 Data Sheet - Release
Definition
Copyright © 2009, Integrated Device Technology, Inc.
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
All rights reserved.
50
Table
7-5, 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
Auto-Negotiation ability
Link is valid/established
detected
Always 1: PHY has
extended capabilities
Always 1: PHY has
Jabber condition
When Bit = 1
Chapter 1, “Abbreviations and
Chapter 7 Management Register Set
cess
CW
CW
CW
CW
CW
CW
CW
CW
Ac-
RO
RO
RO
RO
RO
RO
RO
RO
SF
LH
LH
LH
LL
–
–
–
–
–
–
–
–
–
–
–
–
Acronyms”.
fault
De-
0†
0†
0†
0†
0
1
1
1
1
0
0
0
1
0
0
1
June 2009
Hex
7
8
0
9