W89C926PENTIC 데이터 시트보기 (PDF) - Winbond

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W89C926PENTIC

PCMCIA ETHERNET NETWORK TWISTED PAIR INTERFACE CONTROLLER

Winbond 

W89C926 PENTIC+

RESET

IREQ

(Rdy/Bsy)

CE1,2

F/EE

sampling

EECS, RCS

MSWR

MSD0-7

MSAn

MSAn

EECS

MSD0-7

RCS

MSWR

TR > 500 nS

TS > 150 µS

TCE > 20 mS

TAUTO < 10 mS

TEER > 32 µS

TEEOZ > 0.5 µS

TSW > 100 nS

even address

TSOZ > 20 nS

TSOZ > 20 nS

TSW > 100 nS

odd address

MSD0-2 16 bit EEload

low byte

high byte

EEPROM Contents Load Back

When an EEPROM is used to store CIS, the PENTIC+ allows the contents of the EEPROM to be

modified by means of the following sequence:

write (EEAR, EOS = 1 EW/ER = 1)

write (ADR, address);

write (ADR, word_data);

wait ( );

repeat (

read(EEAR, EOS);

) until (EOS = 0);

/* The entire sequence should be consecutive or the process will be aborted. */

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