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RTL8101

REALTEK SINGLE CHIP FAST ETHERNET CONTROLLER AND MC’97 CONTROLLER WITH POWER MANAGEMENT

Realtek Semiconductor 

EECS

O

55

EEPROM chip select

RTL8101L

4.4 Power Pins

Symbol

VDD

AVDD

VDD25

AVDD25

DGND

AGND

Type

P

P

P

P

P

p

Pin No

6, 22, 37, 49, 90, 95

59, 70, 75

48, 94

58

2, 16, 31, 44, 88

62, 66, 73

+3.3V (Digital)

+3.3V (Analog)

+2.5V (Digital)

+2.5V (Analog)

Digital Ground

Analog Ground

Description

4.5 LED Interface

Symbol

LED0, 1, 2

Type

O

Pin No

78, 77, 76

LED pins

Description

LEDS1-0

LED0

LED1

LED2

00

TX/RX

LINK100

LINK10

01

10

TX/RX

TX

LINK10/100

FULL

LINK10/100

RX

11

Link10/

ACT

Link100/

ACT

Full

During power down mode, the LEDs are OFF.

If LED1 is pulled low by a 10K resistor, the RT8101L runs in

modem-only mode and a 93C46 is not necessary.

4.6 Attachment Unit Interface

Symbol

TXD+

TXD-

RXIN+

RXIN-

X1

X2

Type

O

O

I

I

I

O

Pin No

72

71

68

67

61

60

Description

100/10BASE-T transmit (Tx) data

100/10BASE-T receive (Rx) data

25 MHz crystal/OSC input

Crystal feedback output: This output is used in crystal connection only. It

must be left open when X1 is driven with an external 25 MHz oscillator.

4.7 AC-Link Pins

Symbol

AC_RSTB

AC_SYNC

AC_DOUT

AC_DIN

AC_BCK

INTBB

GPIO0

GPIO1

Type

O

O

O

I

I

O/D

I/O

I/O

Pin No

1

3

4

5

7

79

100

99

Description

MC’97 Reset: Hardware reset to Codec.

MC’97 SYNC: 48Khz fixed rate sample sync to Codec.

MC’97 Serial Data Out: Serial data output to Codec.

MC’97 Serial Data In: Serial data input from Codec.

MC’97 Bit Clock: 12.288Mhz serial data clock generated by Codec.

INTBB is used for function 1 device (Modem) to request an interrupt.

General Purpose I/O pins: Both can be programmed as input or output by

bit0-1 of PCI GPIO Setup Register.

2003-05-28

8

Rev.1.3

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