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RTL8305SC

SINGLE-CHIP 5-PORT 10/100MBPS SWITCH CONTROLLER WITH DUAL MII INTERFACES

Realtek Semiconductor 

RTL8305SC

Datasheet

5. Pin Descriptions

‘Type’ codes used in the following tables: A=Analog; D=Digital, I=Input; O=Output,

PU=Internal pull-up, PD=Internal pull-down.

Upon Reset: Defined as a short time after the end of a hardware reset.

After Reset: Defined as the time after the specified ‘Upon Reset’ time.

5.1. Media Connection Pins

Pin Name

RXIP[4:0]

RXIN[4:0]

TXOP[4:0]

TXON[4:0]

Pin No.

2, 3, 12, 13,

16, 17, 26,

27, 30, 31

5, 6, 9, 10,

19, 20, 23,

24, 33, 34

Table 2. Media Connection Pins

Type

I

O

Drive (mA)

Description

Differential Receive Data Input

Shared by 100Base-TX, 10Base-T, and 100Base-FX.

UTP or FX depends on pin GxMode/GyMode/P4Mode[1:0].

Differential Transmit Data Output

Shared by 100Base-TX, 10Base-T, and 100Base-FX.

UTP or FX depends on pin GxMode/GyMode/P4Mode[1:0].

5.2. Port 4 Configuration Pins

Pin Name

DISDUALMII

Pin No.

42

Table 3. Port 4 Configuration Pin Definitions

Type Drive (mA) Description

Port 4 Configuration Pin Definitions

IPU

Disable Dual MII Interface Function

This pin disables or enables the Dual MII interface function of

port 4.

1: Disable

0: Enable

When enabled, the MAC circuit of port 4 can be set as MAC

mode MII, PHY mode MII, or PHY mode SNI. The PHY

circuit of port 4 is set as PHY mode MII.

The PHY circuit of port 4 can optionally be set as UTP or fiber

mode according to the P4MOD[1:0] configuration.

5-port 10/100Mbps Single-Chip Dual MII Switch Controller 9

Track ID: JATR-1076-21 Rev. 1.2

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