RTL8201CP-VD Ver la hoja de datos (PDF) - Unspecified

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RTL8201CP-VD

SINGLE-CHIP/SINGLE-PORT 10/100M FAST ETHERNET PHYCEIVER (With Auto Crossover)

Unspecified 

Name

MDC

Type

I

MDIO

IO

Pin No.

25

26

RTL8201CP

Datasheet

Description

Management Data Clock.

This pin provides a clock synchronous to MDIO, which may be asynchronous to

the transmit TXC and receive RXC clocks. The clock rate can be up to 2.5MHz.

Management Data Input/Output.

This pin provides the bi-directional signal used to transfer management

information.

5.2. SNI (Serial Network Interface) 10Mbps Only

Name

COL

RXD0

CRS

RXC

TXD0

TXC

TXEN

Type

O

O

O

O

I

O

I

Table 2. SNI (Serial Network Interface) 10Mbps Only

Pin No. Description

1

Collision Detect.

21

Received Serial Data.

23

Carrier Sense.

16

Receive Clock.

Resolved from received data.

6

Transmit Serial Data.

7

Transmit Clock.

Generated by PHY.

2

Transmit Enable.

For MAC to indicate transmit operation.

5.3. Clock Interface

Name

X2

X1

Type

O

I

Pin No.

47

46

Table 3. Clock Interface

Description

25MHz Crystal Output.

This pin provides the 25MHz crystal output. It must be left open when an external

25MHz oscillator drives X1.

25MHz Crystal Input.

This pin provides the 25MHz crystal input. If a 25MHz oscillator is used, connect

X1 to the oscillator’s output (see 8.3 Crystal Characteristics, page 30, for clock

source specifications.

5.4. 10Mbps/100Mbps Network Interface

Name

TPTX+

TPTX-

RTSET

TPRX+

TPRX-

Type

O

O

I

I

I

Table 4. 10Mbps/100Mbps Network Interface

Pin No. Description

34

Transmit Output.

33

Differential transmit output pair shared by 100Base-TX, 100Base-FX and

10Base-T modes. When configured as 100Base-TX, output is an MLT-3 encoded

waveform. When configured as 100Base-FX, the output is pseudo-ECL level.

28

Transmit Bias Resistor Connection.

This pin should be pulled to GND by a 2KΩ (1%) resistor to define driving

current for the transmit DAC. The resistance value may be changed, depending on

experimental results of the RTL8201CP.

31

Receive Input.

30

Differential receive input pair shared by 100Base-TX, 100Base-FX, and 10Base-T

modes.

Single-Chip/Port 10/100 Fast Ethernet PHYceiver

5

Track ID: JATR-1076-21 Rev. 1.21

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