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)
FUNCTIONPIN SYMBOLSNUMBER OF PINS

 

 

 

System Address Bus

A1-A15, AEN, nBE0-nBE3

20

 

 

 

System Data Bus

D0-D31

32

 

 

 

System Control Bus

RESET, nADS, LCLK, ARDY,

14

 

nRDYRTN, nSRDY, INTR0, nLDEV,

 

 

nRD, nWR, nDATACS, nCYCLE, W/nR,

 

 

nVLBUS

 

 

 

 

Serial EEPROM

EEDI, EEDO, EECS, EESK, ENEEP,

8

 

IOS0-IOS2

 

 

 

 

LEDs

nLEDA, nLEDB

2

 

 

 

PHY

TPO+, TPO-, TPI+, TPI-, nLNK, LBK,

8

 

nCNTRL, RBIAS

 

 

 

 

Crystal Oscillator

XTAL1, XTAL2

2

 

 

 

Power

VDD, AVDD

10

 

 

 

Ground

GND, AGND

12

 

 

 

Physical Interface (MII)

TXEN100, CRS100, COL100, RX_DV,

18

 

RX_ER, TXD0-TXD3, RXD0-RXD3,

 

 

MDI, MDO, MCLK, RX25, TX25

 

 

 

 

MISC

nCSOUT, X25OUT

2

 

 

 

TOTAL

 

128

 

 

 

Revision 1.91 (08-18-08)

14

SMSC LAN91C111 REV C

DATASHEET