SMSC LAN9514 Manual Do Utilizador

USB Hub with Integrated 10/100 Ethernet Controller

Revision 1.0 (04-20-09)

10

SMSC LAN9514

 

1

EEPROM Data 

In

EEDI

IS

(PD)

This pin is driven by the EEDO output of the 

external EEPROM.

1

EEPROM Data 

Out

EEDO

O8

This pin drives the EEDI input of the external 

EEPROM.

1

EEPROM Chip 

Select

EECS

O8

This pin drives the chip select output of the external 

EEPROM. 

1

EEPROM Clock

EECLK

O8

This pin drives the EEPROM clock of the external 

EEPROM.

1

JTAG Test Port 

Reset

nTRST

IS

This active low pin functions as the JTAG test port 

reset input.
Note:

This pin should be tied high if it is not 
used.

1

JTAG Test 

Mode Select

TMS

IS

This pin functions as the JTAG test mode select.

1

JTAG Test Data 

Input

TDI

IS

This pin functions as the JTAG data input.

1

JTAG Test Data 

Out

TDO

O12

This pin functions as the JTAG data output.

1

JTAG Test 

Clock

TCK

IS

This pin functions as the JTAG test clock. The 

maximum operating frequency of this clock is 

25MHz.

1

System Reset

nRESET

IS

This active low pin allows external hardware to 

reset the device.
Note:

This pin should be tied high if it is not 
used.

1

Ethernet 

Full-Duplex 

Indicator LED

nFDX_LED

OD12

(PU)

This pin is driven low (LED on) when the Ethernet 

link is operating in full-duplex mode.

General 

Purpose I/O 0

GPIO0

IS/O12/

OD12

(PU)

This General Purpose I/O pin is fully programmable 

as either a push-pull output, an open-drain output, 

or a Schmitt-triggered input.