ICS1892 Datasheet, PDF (95/148 Pages) Integrated Circuit Systems – 10Base-T/100Base-TX Integrated PHYceiver

ICS1892
Chapter 8 Management Register Set
8.13 Register 18: 10Base-T Operations Register
The 10Base-T Operations Register provides an STA with the ability to monitor and control the ICS1892
activity while the ICS1892 is operating in 10Base-T mode.
Note:
1. For an explanation of acronyms used in Table 8-20, see Chapter 1, “Abbreviations and Acronyms”.
2. During any write operation to any bit in this register, the STA must write the default value to all
Reserved bits.
Table 8-20. 10Base-T Operations Register (register 18 [0x12])
Bit
Definition
When Bit = 0
When Bit = 1
18.15 ICS reserved
Read unspecified
Read unspecified
18.14 Polarity reversed Normal polarity
Polarity reversed
18.13 ICS reserved
Read unspecified
Read unspecified
18.12 ICS reserved
Read unspecified
Read unspecified
18.11 ICS reserved
Read unspecified
Read unspecified
18.10 ICS reserved
Read unspecified
Read unspecified
18.9 ICS reserved
Read unspecified
Read unspecified
18.8 ICS reserved
Read unspecified
Read unspecified
18.7 ICS reserved
Read unspecified
Read unspecified
18.6 ICS reserved
Read unspecified
Read unspecified
18.5 Jabber inhibit
Normal Jabber behavior Jabber Check disabled
18.4 ICS reserved
Read unspecified
Read unspecified
18.3 Auto polarity inhibit Polarity automatically
corrected
Polarity not automatically
corrected
18.2 SQE test inhibit
Normal SQE test behavior SQE test disabled
18.1 Link Loss inhibit Normal Link Loss behavior Link Always = Link Pass
18.0 Squelch inhibit
Normal squelch behavior No squelch
Ac-
cess
RW/0
RO
RW/0
RW/0
RW/0
RW/0
RW/0
RW/0
RW/0
RW/0
RW
RW/1
RW
SF De- Hex
fault
SC 0 –
LH 0
––
––
– ––
––
––
––
– ––
––
–0
–1
– 00
RW
–
0
RW
–
0
RW
–
0
8.13.1 ICS Reserved (bit 18.15)
ICS reserves this bit for future use. Functionally, this bit is equivalent to an IEEE Reserved bit. When this
reserved bits is:
• Read by an STA, the ICS1892 returns a logic zero.
• Written to by an STA, the STA must use the default value specified in this data sheet.
In general, ICS uses some reserved bits to invoke auxiliary functions. To ensure proper operation of the
ICS1892, an STA must maintain the default value of these bits. Therefore, ICS recommends that an STA
always write the default value of any reserved bits during all management register write operations.
ICS1892, Rev. D, 2/26/01
© 2000-2001, Integrated Circuit Systems, Inc.
All rights reserved.
95
February 26, 2001