10/100 Non-PCI Ethernet Single Chip MAC + PHY
Datasheet
Revision 1.91 (08-18-08) 14 SMSC LAN91C111 REV C
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 A1-A15, AEN, nBE0-nBE3 20
System Data Bus D0-D31 32
System Control Bus RESET, nADS, LCLK, ARDY,
nRDYRTN, nSRDY, INTR0, nLDEV,
nRD, nWR, nDATACS, nCYCLE, W/nR,
nVLBUS
14
Serial EEPROM EEDI, EEDO, EECS, EESK, ENEEP,
IOS0-IOS2
8
LEDs nLEDA, nLEDB 2
PHY TPO+, TPO-, TPI+, TPI-, nLNK, LBK,
nCNTRL, RBIAS
8
Crystal Oscillator XTAL1, XTAL2 2
Power VDD, AVDD 10
Ground GND, AGND 12
Physical Interface (MII) TXEN100, CRS100, COL100, RX_DV,
RX_ER, TXD0-TXD3, RXD0-RXD3,
MDI, MDO, MCLK, RX25, TX25
18
MISC nCSOUT, X25OUT 2
TOTAL 128
