LXT9763 — Fast Ethernet 10/100 Hex Transceiver with Full MII
Table 47. Port Configuration Register (Address 16, Hex 10)
Bit
Name
Reserved
Description
Write as zero, ignore on read.
Type 1
Default
16.15
R/W
0
1 = Force Link Pass. Sets appropriate registers, state machines and
LEDs to Pass condition, regardless of actual link state.
0 = Normal operation.
16.14
Force Link Pass
Transmit Disable
R/W
0
1 = Disable Twisted Pair transmitter.
0 = Normal Operation.
16.13
16.12
16.11
16.10
16.9
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
Bypass Scrambler
(100BASE-TX)
1 = Bypass Scrambler and Descrambler.
0 = Normal Operation.
Bypass 4B5B
(100BASE-TX)
1 = Bypass 4B5B encoder and decoder.
0 = Normal Operation.
Jabber
(10BASE-T)
1 = Disable Jabber.
0 = Normal operation.
SQE
(10BASE-T)
1 = Enable Heart Beat.
0 = Disable Heart Beat.
TP Loopback
(10BASE-T)
1 = Disable TP loopback during half-duplex operation.
0 = Normal Operation.
16.8
CRS Select
(10BASE-T)
1 = CRS deassert extends to RX_DV deassert.
0 = Normal Operation.
16.7
16.6
R/W
R/W
1
0
Reserved
Write as zero, ignore on read.
0 = Set RX_DV high coincident with SFD. (Strip off received preamble
before sending data stream to MAC via MII.)
1 = Set RX_DV high and RXD=preamble when CRS is asserted.
Preamble Enable
(10BASE-T)
16.5
R/W
0
16.4
16.3
16.2
Reserved
Reserved
Reserved
Write as zero, ignore on read.
Write as zero, ignore on read.
Write as zero, ignore on read.
R/W
R/W
R/W
0
0
0
Alternate NP
feature
1 = Enable alternate auto negotiate next page feature.
0 = Disable alternate auto negotiate next page feature.
16.1
16.0
R/W
R/W
0
0
1 = Select fiber mode for this port.
0 = Select TP mode for this port.
Fiber Select
1. R/W = Read /Write.
Table 48. Quick Status Register (Address 17, Hex 11)
Bit
Name
Reserved
Description
Type 1
Default
17.15
Always 0.
RO
0
1 = LXT9763 is operating in 100BASE-TX mode.
0 = LXT9763 is not operating 100BASE-TX mode.
17.14
17.13
17.12
17.11
10/100 Mode
RO
RO
RO
RO
0
0
0
0
1 = LXT9763 is transmitting a packet.
0 = LXT9763 is not transmitting a packet.
Transmit Status
Receive Status
Collision Status
1 = LXT9763 is receiving a packet.
0 = LXT9763 is not receiving a packet.
1 = Collision is occurring.
0 = No collision.
1. RO = Read Only.
68
Datasheet
INTEL [ INTEL ]
