LAN91C111_11 Datasheet, PDF (18/133 Pages) SMSC Corporation – 10/100 Non-PCI Ethernet Single Chip MAC + PHY

10/100 Non-PCI Ethernet Single Chip MAC + PHY
Datasheet
PIN NO.
TQFP
125
112
113-116
109
118
121-124
25
QFP
127
114
115-118
111
120
123-126
27
NAME
SYMBOL
BUFFER
TYPE
DESCRIPTION
Receive Data
Valid
RX_DV
Collision Detect COL100
100 Mbps
Transmit Data TXD3-
TXD0
Transmit Clock TX25
Receive Clock RX25
Receive Data
Management
Data Input
RXD3-
RXD0
MDI
I with
pulldown
I with
pulldown
O12
I with
pullup
I with
pullup
I with
pullup
I with
pulldown
Input from MII PHY. Envelope of data
valid reception. Used for receive data
framing.
Input from MII PHY. Collision detection
input.
Outputs. Transmit Data nibble to MII
PHY.
Input. Transmit clock input from MII.
Nibble rate clock (25MHz for 100Mbps &
2.5MHz for 10Mbps).
Input. Receive clock input from MII PHY.
Nibble rate clock. (25MHz for 100Mbps &
2.5MHz for 10Mbps).
Inputs. Received Data nibble from MII
PHY.
MII management data input.
26
28
Management MDO
O4
MII management data output.
Data Output
27
29
Management MCLK
O4
MII management clock.
Clock
126
128
Receive Error RX_ER
I with
Input. Indicates a code error detected by
pulldown PHY. Used by the LAN91C111 to discard
the packet being received. The error
indication reported for this event is the
same as a bad CRC (Receive Status
Word bit 13).
2
4
nChip Select nCSOUT O4
Output. Chip Select provided for
Output
mapping of PHY functions into
LAN91C111 decoded space. Active on
accesses to LAN91C111’s eight lower
addresses when the BANK SELECTED is
7.
12
14
External
RBIAS
NA
Transmit Current Set. An external
Resistor
resistor connected between this pin and
GND will set the output current for the TP
transmit outputs
14
16
TPO+
O/I
Twisted Pair Transmit Output, Positive.
15
17
TPO-
O/I
Twisted Pair Transmit Output, Negative
17
19
TPI+
I/O
Twisted Pair Receive Input, Positive
18
20
TPI-
I/O
Twisted Pair Receive Input, Negative.
22
24
nLEDA
OD24
PHY LED Output
23
25
nLEDB
OD24
PHY LED Output
Note 5.1
Revision 1.92 (06-27-11)
If the EEPROM is enabled.
18
DATASHEET
SMSC LAN91C111 REV C