SMC Networks SMC91C95 Manuel d'utilisateur télécharger pdf (Page 66)

I/O SPACE - BANK3

OFFSET NAME TYPE SYMBOL

8 MANAGEMENT INTERFACE READ/WRITE MGMT

HIGH

BYTE

nXNDE

IOS2 IOS1 IOS0

0 0 1 1

LOW

BYTE

MDOE MCLK MDI MDO

0 0 1 1 0 0 0 0

nXNDEC - Read only bit reflecting the status of

the nXENDEC pin.

IOS0-IOS2 - Read only bits reflecting the status of

the IOS0-IOS2 pins.

MDO - The value of this bit drives the EEDO pin

when MDOE=1.

MDI - Reads the value of the EEDI pin.

MDCLK - The value of this bit drives the EESK pin

when MDOE=1.

MDOE - When this bit is high pins EEDO EECS

and EESK will be used for transceiver

management functions, otherwise the pins assume

the EEPROM values.

MDOE=0 MDOE=1

EEDO Serial EEPROM Data Out Bit MDO

EESK Serial EEPROM Clock Bit MCLK

EECS Serial EEPROM Chip Select 0

1 2 ... 61 62 63 64 65 66 67 68 69 70 71 ... 138 139

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SMC Networks SMC91C95 Manuel d'utilisateur Page 66