10/100 Non-PCI Ethernet Single Chip MAC + PHY
Datasheet
Chapter 4 Signal Descriptions
Table 4.1 LAN91C111 Pin Requirements (128 Pin QFP and 1.0mm TQFP package)
FUNCTION
PIN SYMBOLS
NUMBER OF PINS
System Address Bus
System Data Bus
A1-A15, AEN, nBE0-nBE3
D0-D31
20
32
14
System Control Bus
RESET, nADS, LCLK, ARDY,
nRDYRTN, nSRDY, INTR0, nLDEV,
nRD, nWR, nDATACS, nCYCLE, W/nR,
nVLBUS
Serial EEPROM
EEDI, EEDO, EECS, EESK, ENEEP,
IOS0-IOS2
8
LEDs
PHY
nLEDA, nLEDB
2
8
TPO+, TPO-, TPI+, TPI-, nLNK, LBK,
nCNTRL, RBIAS
Crystal Oscillator
Power
XTAL1, XTAL2
VDD, AVDD
GND, AGND
2
10
12
18
Ground
Physical Interface (MII)
TXEN100, CRS100, COL100, RX_DV,
RX_ER, TXD0-TXD3, RXD0-RXD3,
MDI, MDO, MCLK, RX25, TX25
MISC
nCSOUT, X25OUT
2
TOTAL
128
SMSC LAN91C111-REV B
Revision 1.8 (07-13-05)
DATA2S1HEET
SMSC [ SMSC CORPORATION ]
