MX98726 datasheet(7/55 Pages) MCNIX

Part #	MX98726

Description	SINGLE CHIP 10/100 FAST ETHERNET CONTROLLER WITH uP INTERFACE

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Manufacturer	MCNIX [Macronix International]

Direct Link	http://www.macronix.com

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7

P/N:PM0555

REV. 0.9.8, FEB. 14, 2000

MX98726

MACRONIX INTERNATIONAL CO., LTD. reserves the rignt to change product and specifications without notice.

10/100 Tranceiver interface :

PIN#

Pin Name

Type

Description

14

RDA

O

RDA external resistor to ground: 10K ohm, 5%

17

CKREF(X1)

I, TTL

25Mhz , 30 PPM external osc./crystal input :

16

X2

O

25Mhz , 30 PPM external crystal output :

23

RXIN

I

Twisted pair receive differential input: support both 10/100 Mbps speed

24

RXIP

I

Twisted pair receive differential input: support both 10/100 Mbps speed

29

TXON

O

Twisted pair transmit differential output: support both 10/100 Mbps speed,

meet 802.3/802.3u spec.

30

TXOP

O

Twisted pair transmit differential output: support both 10/100 Mbps speed,

meet 802.3/802.3u spec.

32

CPK

O

NC pin : used in test mode only

33

RTX2EQ

O

RTX2EQ external resistor to ground: 1.4K ohm, 5%

34

RTX

O

RTX external resistor to ground: 560 ohm, 5%

Miscellaneous :

PIN#

Pin Name

Type

Description

110

EECS

O,2ma

EEPROM Chip Select Signal : Active high

44

C46/C66

I,TTL

EEPROM Size Select : Set for C46, reset for C66. Internal pull-up.

84

LED0

O,16ma

LED0 : SPEED LED, when light is on, it indicates 100 Mbps speed. When

off indicates 10 Mbps speed.

83

LED1

O,16ma

LED1 :Link/Activity LED, when light is stable and on, it indicates good link.

When flashing, indicates TX and RX activities. When off means bad link.

42

UPTYPE0,

I,TTL

uP type select control bit 1-0: UPTYPE1 is internally pull-up, UPTYPE0 is

internally pull-down.

UPTYPE0

uP selected

0

80188

1

80186

43

NC

No connect

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