LAN83C185_03 Datasheet, PDF (41/65 Pages) SMSC Corporation – High Performance Single Chip Low Power 10/100 Ethernet Physical Layer Transceiver

High Performance Single Chip Low Power 10/100 Ethernet Physical Layer Transceiver (PHY)
Datasheet
Table 5.40 Register 6 - Auto Negotiation Expansion
ADDRESS
NAME
DESCRIPTION
MODE DEFAULT
6.15:5
6.4
6.3
6.2
6.1
6.0
Reserved
RO
0
Parallel Detection 1 = fault detected by parallel detection logic
Fault
0 = no fault detected by parallel detection logic
RO/
0
LH
Link Partner Next 1 = link partner has next page ability
Page Able
0 = link partner does not have next page ability
RO
0
Next Page Able
1 = local device has next page ability
0 = local device does not have next page ability
RO
0
Page Received
1 = new page received
0 = new page not yet received
RO/
0
LH
Link Partner Auto- 1 = link partner has auto-negotiation ability
RO
0
Negotiation Able 0 = link partner does not have auto-negotiation ability
Table 5.41 Register 16 - Silicon Revision
ADDRESS
NAME
16.15:10 Reserved
16.9:6
Silicon Revision
16.5:0
Reserved
DESCRIPTION
Four-bit silicon revision identifier.
MODE DEFAULT
RO
0
RO
0001
RO
0
Table 5.42 Register 17 - Mode Control/Status
ADDRESS
NAME
17.15
17.14
Reserved
FASTRIP
17.13
17.12
17.11
EDPWRDOWN
Reserved
LOWSQEN
17.10
17.9
MDPREBP
Reserved
DESCRIPTION
MODE DEFAULT
Write as 0; ignore on read.
RW
0
10Base-T fast mode:
0 = normal operation
1 = Reserved
Must be left at 0
RW,
0
NASR
Enable the Energy Detect Power-Down mode:
0 = Energy Detect Power-Down is disabled
1 = Energy Detect Power-Down is enabled
RW
0
Write as 0, ignore on read
RW
0
The Low_Squelch signal is equal to LOWSQEN AND RW
0
EDPWRDOWN.
Low_Squelch = 1 implies a lower threshold
(more sensitive).
Low_Squelch = 0 implies a higher threshold
(less sensitive).
Management Data Preamble Bypass:
0 – detect SMI packets with Preamble
1 – detect SMI packets without preamble
RW
0
Reserved
Must be left at 0
RW
0
SMSC LAN83C185
33
DATASHEET
Rev. 0.6 (12-12-03)