RTL8100CL-LF 데이터 시트보기 (PDF) - Realtek Semiconductor

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RTL8100CL-LF

SINGLE-CHIP FAST ETHERNET CONTROLLER WITH POWER MANAGEMENT

Realtek Semiconductor 

RTL8100C & RTL8100CL

Datasheet

5.6. Attachment Unit Interface

Symbol

TXD+

TXD-

RXIN+

RXIN-

X1

X2

Type

O

O

I

I

I

O

Table 6. Attachment Unit Interface

Pin No

Description

1

100/10Base-T Transmit (TX) data.

2

5

100/10Base-T Receive (RX) data.

6

121

25MHz Crystal/OSC Input.

122

Crystal Feedback Output.

This output is used in a crystal connection only. It must be left open when

X1 is driven with an external 25MHz oscillator.

5.7. Test and Other Pins

Symbol

RTT3

RTSET

CTRL25

CLKRUN

NC

Table 7. Test and Other Pins

Type

Pin No

Description

TEST

123

Chip Test pin.

I/O

127

This pin must be pulled low by a resistor.

Refer to section 9 Application Information, page 61, for the correct

value.

Analog

8

Use this pin and an external PNP type transistor to generate +2.5V for

the RTL8100C(L).

I/O

65

Clock Run.

This signal is used to request starting (or speeding up) of the clock.

CLKRUN also indicates the clock status. CLKRUN is an open drain

output as well as an input. The RTL8100C(L) requests the central

resource to start, speed up, or maintain the interface clock by the

assertion of CLKRUN. For the host system, it is an S/T/S signal. The

host system (central resource) is responsible for maintaining

CLKRUN asserted, and for driving it high to the negated (deasserted)

state.

- 9~11,13~16, 18, 19, 22, Not Connected.

24, 45, 48, 62, 72~74,

110, 112, 116, 118,

120, 125, 126

Single-Chip Fast Ethernet Controller

9

Track ID: JATR-1076-21 Rev. 1.06

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