LAN91C100FD_08 Datasheet, PDF (10/77 Pages) SMSC Corporation – FEAST Fast Ethernet Controller with Full Duplex Capability

FEAST Fast Ethernet Controller with Full Duplex Capability
PQFP/TQFP
PIN NO.
201
208
NAME
Transmit
Data
Carrier
Sense
SYMBOL
TXD
CRS
207
Collision COL
Detect
206
Receive RXD
Data
197
Transmit TXC
Clock
199
Receive RXC
Clock
202
Loopback LBK
1
nLink
nLNK
Status
195
nFullstep nFSTEP
6
MII Select MIISEL
194
AUI Select AUISEL
30
Transmit TXEN100
Enable
100 Mbps
19
Carrier
CRS100
Sense 100
Mbps
12
Receive RX_DV
Data Valid
18
25, 26, 28,
29
9
Collision
Detect
100 Mbps
Transmit
Data
Transmit
Clock
COL100
TXD0-
TXD3
TX25
17
Receive RX25
Clock
BUFFER
TYPE
O4
I with
pulldown
I with
pulldown
I with
pullup
I with
pullup
I with
pullup
O4
I with
pullup
O4
O4
O4
O12
DESCRIPTION
Output. NRZ Transmit Data for 10 Mbps
ENDEC interface.
Input. Carrier sense from 10 Mbps ENDEC
interface. This pin is ignored when MIISEL is
high.
Input. Collision detection indication from 10
Mbps ENDEC interface. This pin is ignored
when MIISEL is high.
Input. NRZ Receive Data from 10 Mbps ENDEC
interface. This pin is ignored when MIISEL is
high.
Input. 10 MHz transmit clock used in 10 Mbps
operation. This pin is ignored when MIISEL is
high.
Input. 10 MHz receive clock recovered by the 10
Mbps ENDEC. This pin is ignored when MIISEL
is high.
Output. Active when LOOP bit is set (TCR bit 1).
Independent of port selection (MIISEL=X).
Input. General purpose input port used to
convey LINK status (EPHSR bit 14).
Independent of port selection (MIISEL=X).
Output. Non volatile output pin. Driven by
inverse of FULLSTEP (CONFIG bit 10).
Independent of port selection (MIISEL=X).
Output. Non volatile output pin. Driven by MII
SELECT (CONFIG bit 15). High indicates the
MII port is selected, low indicates the 10 Mbps
ENDEC is selected.
Output. Non volatile output pin. Driven by AUI
SELECT (CONFIG bit 8). Independent of port
selection (MIISEL= X).
Output to MII PHY. Envelope to 100 Mbps
transmission. This pin stays low if MIISEL is low.
I with
pulldown
I with
pulldown
I with
pulldown
Input from MII PHY. Envelope of packet
reception used for deferral and backoff
purposes. This pin is ignored when MIISEL is
low.
Input from MII PHY. Envelope of data valid
reception. Used for receive data framing. This
pin is ignored when MIISEL is low.
Input from MII PHY. Collision detection input.
This pin is ignored when MIISEL is low.
O12 Outputs. Transmit Data nibble to MII PHY.
I with
pullup
I with
pullup
Input. Transmit clock input from MII. Nibble rate
clock (25 MHz). This pin is ignored when
MIISEL is low.
Input. Receive clock input from MII PHY. Nibble
rate clock. This pin is ignored when MIISEL is
low.
Revision 1.0 (09-22-08)
Page 10
DATASHEET
SMSC LAN91C100FD Rev. D