±15kV ESD Protected MII/RMII 10/100 Ethernet Transceiver with HP Auto-MDIX Support and flexPWR® Technology in a Small Footprint
Datasheet
Table 5.36 Register 6 - Auto Negotiation Expansion
ADDRESS
NAME
DESCRIPTION
MODE DEFAULT
6.15:5
6.4
Reserved
RO
0
0
Parallel Detection
Fault
1 = fault detected by parallel detection logic
0 = no fault detected by parallel detection logic
RO/
LH
6.3
6.2
6.1
6.0
Link Partner Next
Page Able
1 = link partner has next page ability
RO
0
0
0
0
0 = link partner does not have next page ability
Next Page Able
1 = local device has next page ability
0 = local device does not have next page ability
RO
Page Received
1 = new page received
0 = new page not yet received
RO/
LH
Link Partner Auto- 1 = link partner has auto-negotiation ability
Negotiation Able
RO
0 = link partner does not have auto-negotiation ability
Table 5.37 Register 16 - Silicon Revision
DESCRIPTION
ADDRESS
NAME
MODE DEFAULT
16.15:10
16.9:6
Reserved
Silicon Revision
Reserved
RO
RO
RO
0
0001
0
Four-bit silicon revision identifier.
16.5:0
Table 5.38 Register 17 - Mode Control/Status
ADDRESS
NAME
DESCRIPTION
MODE DEFAULT
17.15:14
17.13
Reserved
Write as 0; ignore on read.
RW
RW
0
0
EDPWRDOWN
Enable the Energy Detect Power-Down mode:
0 = Energy Detect Power-Down is disabled
1 = Energy Detect Power-Down is enabled
17.12
17.11
Reserved
Write as 0, ignore on read
RW
RW
0
0
LOWSQEN
The Low_Squelch signal is equal to LOWSQEN AND
EDPWRDOWN.
Low_Squelch = 1 implies a lower threshold
(more sensitive).
Low_Squelch = 0 implies a higher threshold
(less sensitive).
17.10
17.9
MDPREBP
Management Data Preamble Bypass:
0 – detect SMI packets with Preamble
1 – detect SMI packets without preamble
RW
RW
0
0
FARLOOPBACK
Force the module to the FAR Loop Back mode, i.e. all
the received packets are sent back simultaneously (in
100Base-TX only). This bit is only active in RMII
mode. In this mode the user needs to supply a 50MHz
clock to the PHY. This mode works even if MII Isolate
(0.10) is set.
SMSC LAN8700/LAN8700i
Revision 2.3 (04-12-11)
DATA4S5HEET
SMSC [ SMSC CORPORATION ]
