MTD502EG View Datasheet(PDF) - Myson Century Inc

Part Name

Description

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MTD502EG

2 Port 10M/100M Switch With Build_in Memory

Myson Century Inc 

MYSON

TECHNOLOGY

MTD502E

MTD502EF (128PQFP) Pin Definition Mapping Under Different Configurations

Pin No. I/O

MII Phy_MII Rmii Phy_Rm

mode mode mode ii mode

Descriptions

124~127 IO (NC) (NC) (NC) (NC)

128

I RSTB RSTB RSTB RSTB system resetb input, low_active.

note: input signal LINK,SPEED,FULL from PHY device are low_active definnition.

MTD502EF(128PQFP) Jumper Setting Table After Power On Reset

Pin No. IO

5

IO

Setting Function

2P_Sw Enable

Descriptions

Jumper setting function after power on reset.

-external pull_high = 1, means enter 2 port switch mode.

-external pull_low = 0, means an internal test mode.

-external floating : default is 0.

For MTD502E application, this pin must always use “external

pull_hgih” for well operation.

18

IO Back Pressure Disable Jumper setting function after power on reset.

-external pull_high = 1, means back_pressure function ( under

half_duplex) is disabled for two ports both.

-external pull_low = 0, means back_pressure function enable.

-external floating : default is 0.

95

IO P1_Rmii Enable Jumper setting function after power on reset.

-external pull_high = 1, means Port 1 RMII interface enable..

-external pull_low = 0, means Port 1 is MII interface.

-external floating : default is 0.

97

IO P0_Rmii Enable Jumper setting function after power on reset.

-external pull_high = 1, means Port 0 RMII interface enable..

-external pull_low = 0, means Port 0 is MII interface.

-external floating : default is 0.

98

IO P0_Phy_Mode Enable Jumper setting function after power on reset.

-external pull_high = 1, means Port 0 interrface enter PHY mode.

-external pull_low = 0, means Port 0 interface is using MAC mode.

-external floating : default is 0.

100

IO P1_Bkoff_4 Enable Jumper setting function after power on reset.

-external pull_high = 1, means Port 1 MAC backoff engine is using

limit_4 modified method.

-external pull_low = 0, means Port 1 MAC backoff engine is using

specification defined method.

-external floating : default is 0.

8/20

MTD502E Revision 1.3 12/07/2000

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