LAN9313 datasheet(38/398 Pages) SMSC

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Three Port 10/100 Managed Ethernet Switch with MII

Datasheet

Revision 1.2 (04-08-08)

SMSC LAN9313/LAN9313i

DATASHEET

Note 3.13 The IS buffer type is valid only during the time specified in Section 14.5.2, "Reset and

Configuration Strap Timing," on page 390 and when in I2C mode.

Note: Refer to Section Chapter 8, "Serial Management," on page 101 for additional information

regarding the serial management configuration and functionality.

Table 3.7 Serial Management Pins

NAME

SYMBOL

BUFFER

TYPE

DESCRIPTION

SPI Slave

Serial Data

Input

(PU)

SPI Slave Serial Data Input: In SPI slave mode,

this pin is the SPI serial data input.

Note:

In SMI slave and unmanaged modes, this

pin is unused and pulled-up internally.

I2C Slave

Serial Data

Input/Output

(I2C Slave

Mode)

SDA

IS/OD8

I2C Serial Data Input/Output: In I2C slave mode,

this pin is the I2C serial data input/output.

Note:

In SMI slave and unmanaged modes, this

pin is unused and pulled-up internally.

SPI Slave

Serial Data

Output

SPI Slave Serial Data Output: In I2C slave, SMI

slave, and unmanaged modes, this pin is not used

and is driven low.

SPI Slave

Chip Select

nSCS

(PU)

SPI Slave Chip Select: SPI slave mode chip

select input. When low, the LAN9313/LAN9313i

SPI slave is selected for SPI transfers. When high,

the SPI serial data output (SO) is 3-stated. In I2C

slave, SMI slave, and unmanaged modes, this pin

is not used.

SPI Slave

Serial Clock

SCK

(PU)

SPI Slave Serial Clock: In SPI slave mode, this

pin is the SPI clock input.

Note:

In SMI slave and unmanaged modes, this

pin is unused and pulled-up internally.

I2C Slave

Serial Clock

SCL

I2C Slave Serial Clock: In I2C slave mode, this pin

is the I2C clock input.

Note:

In SMI slave and unmanaged modes, this

pin is unused and pulled-up internally.

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