SMC91C95 Ver la hoja de datos (PDF) - SMSC -> Microchip

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SMC91C95

ISA/PCMCIA Full Duplex Single-Chip Ethernet and Modem Controller with RAM

SMSC -> Microchip 

PIN NO.

NAME

125 AUI Collision

126

121 TPE Receive

122

4

TPE

6

Transmit

5

TPE

7

Transmit

Delayed

114 Powerdown

DESCRIPTION OF PIN FUNCTIONS

SYMBOL

TYPE

DESCRIPTION

COLP

COLN

Diff. Input

AUI collision differential inputs. A collision is

indicated by a 10 MHz signal at this input pair.

TPERXP

TPERXN

Diff. Input 10BASE-T receive differential inputs.

TPETXP

TPETXN

Diff. Output Internal ENDEC - 10BASE-T transmit

differential outputs.

TPETXDP

TPETXDN

PWRDWN

Diff. Output

10BASE-T delayed transmit differential

outputs. Used in combination with TPETXP

and TPETXN to generate the 10BASE-T

transmit pre-distortion.

I with pullup

Internal ENDEC - Powerdown input. It keeps

the SMC91C95 in powerdown mode when

high (open). Must be low for normal operation.

Refer to the Powerdown Matrix following for

further details.

Transmit

Clock

99

nWakeup

Enable

100 Wakeup

118 Bias

Resistor

TXCLK

nWAKEUP-

EN

WAKEUP

RBIAS

External ENDEC - Transmit clock input from

external ENDEC

I with pullup

Input. When pulled down, the device will

enable Magic Packet (MP) logic and put the

Ethernet function in powerdown mode. The

pin assertion will override the state of

WAKEUP_EN and PWRDN bits in CTR,

Pwrdwn bit in ECSR, and Enable Function bit

ECOR. When deasserted, the WAKEUP_EN

and PWRDN bits will be changed to (0),

Pwrdwn to (0), and Enable Function to (1).

O4

Output. Asserted high if nWAKEUP_EN is

asserted and a valid Magic Packet (MP)

pattern is detected. The pin remains asserted

until nWAKEUP_EN is deasserted.

Analog Input A 22 kohm 1% resistor should be connected

between this pin and analog ground.

16

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