RTL8208BF Ver la hoja de datos (PDF) - Realtek Semiconductor

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RTL8208BF

SINGLE-CHIP OCTAL 10/100BASE-TX/FX PHY TRANSCEIVER

Realtek Semiconductor 

RTL8208B-LF/RTL8208BF-LF

Datasheet

5. Pin Descriptions

In order to reduce pin count, and therefore size and cost, some pins have multiple functions. In such cases

the functions are separated with a “ / ” symbol. For the RTL8208B-LF refer to Figure 1, page 3; for the

RTL8208BF-LF refer to Figure 2, page 4, for a graphical representation.

Signal type codes shown below are used in the previous and following tables:

I:

Input

O:

Output

A:

Analog signal

D:

Digital signal

ND: Not defined

P: Power

G: Ground

Pu: Internal pull up (30K ohm)

Pd: Internal pull down (30K ohm)

5.1. Media Connection Pins

Pin Name

RXIP[7:0]

RXIN[7:0]

TXOP[7:0]

TXON[7:0]

Pin

38, 30,

28, 20, 19,

11 , 9, 1

37, 31, 27,

21, 18, 12, 8,

2

35, 33, 25,

23, 16, 14, 6,

4

36, 32, 26,

22, 17, 13, 7,

3

Table 2. Media Connection Pins

Type Description

AI Receiver Input.

Differential positive signal shared by 100Base-TX, 100Base-FX, and

10Base-T.

AI Receiver Input.

Differential negative signal shared by 100Base-TX, 100Base-FX, and

10Base-T.

AO Transmitter Output.

Differential positive signal shared by 100Base-TX, 100Base-FX, and

10Base-T.

AO Transmitter Output.

Differential negative signal shared by 100Base-TX, 100Base-FX, and

10Base-T.

5.2. Power and Ground Pins

Pin Name

VDDA

VDDAH

VSSA

VDD

VDDO

VSS

Table 3. Power and Ground Pins

Pin

Type Description

10, 24, 34, 117, AP 1.8V Power to analog.

118, 124, 128

127

AP 3.3V Power to regulator.

5, 15, 29, 39, AG Analog ground.

40, 121, 123

60, 90

DP 1.8V Power to digital core.

46, 68, 103 DP 3.3V Power to digital I/O.

47, 61, 69, 89, DG Digital ground.

104

Single-Chip Octal 10/100-TX/FX PHY Transceiver

6

Track ID: JATR-1076-21 Rev. 1.3

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