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LAN83C185 数据表(PDF) 13 Page - SMSC Corporation

部件名 LAN83C185
功能描述  HIGH PERFORMANCE SINGLE CHIP LOW POWER 10/100 ETHERNET PHYSICAL LAYER TRANSCEIVER
PDF  61 Pages
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制造商  SMSC [SMSC Corporation]
网页  http://www.smsc.com
标志 SMSC - SMSC Corporation

LAN83C185 数据表(HTML) 13 Page - SMSC Corporation

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High Performance Single Chip Low Power 10/100 Ethernet Physical Layer Transceiver (PHY)
Datasheet
SMSC LAN83C185
13
Rev. 0.8 (11-16-04)
DATASHEET
37
TX_ER
(TXD4)
I
I
MII Transmit Error: When driven high, the 4B/5B encode
process substitutes the Transmit Error code-group (/H/)
for the encoded data word. This input is ignored in
10BaseT operation.
In Symbol Interface (5B Decoding) mode, this signal
becomes the MII Transmit Data 4: the MSB of the 5-bit
symbol code-group.
48
CRS
O
Carrier Sense: Indicate detection of carrier.
33
RX_DV
O
Receive Data Valid: Indicates that recovered and
decoded data nibbles are being presented on RXD[3:0].
30
RXD2
O
Receive Data 2: Bit 2 of the 4 data bits that sent by the
PHY in the receive path.
29
RXD3
O
Receive Data 3: Bit 3 of the 4 data bits that sent by the
PHY in the receive path.
38
TX_CLK
O
Transmit Clock: 25MHz in 100Base-TX mode. 2.5MHz in
10Base-T mode.
34
RX_CLK
O
Receive Clock: 25MHz in 100Base-TX mode. 2.5MHz in
10Base-T mode.
Table 3.2 LED Signals
PIN NO.
SIGNAL NAME
TYPE
DESCRIPTION
16
SPEED100
O
LED1 – SPEED100 indication. Active indicates that the
selected speed is 100Mbps. Inactive indicates that the
selected speed is 10Mbps.
17
LINKON
O
LED2 – LINK ON indication. Active indicates that the Link
(100Base-TX or 10Base-T) is on.
19
ACTIVITY
O
LED3 – ACTIVITY indication. Active indicates that there
is Carrier sense (CRS) from the active PMD.
20
FDUPLEX
O
LED4 – DUPLEX indication. Active indicates that the PHY
is in full-duplex mode.
Table 3.3 Management Signals
PIN NO.
SIGNAL NAME
TYPE
DESCRIPTION
26
MDIO
IO
Management Data Input/OUTPUT: Serial management
data input/output.
27
MDC
I
Management Clock: Serial management clock.
Table 3.1 MII Signals (continued)
PIN NO.
SIGNAL NAME
TYPE
DESCRIPTION



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