LAN9303 Ver la hoja de datos (PDF) - SMSC -> Microchip

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LAN9303

Small Form Factor Three Port 10/100 Managed Ethernet Switch with Single MII/RMII/Turbo MII

SMSC -> Microchip 

2.2

Block Diagram

MII/Turbo MII to PHY or

MII/RMII/Turbo MII to MAC

Ethernet

10/100

PHY

Registers

MDIO

MII

Ethernet

10/100

PHY

Registers

MII

MDIO

10/100

MAC

10/100

MAC

Switch Engine

Buffer Manager

Search

Engine

Frame

Buffers

10/100

MAC

Switch Fabric

Switch

Registers

(CSRs)

MII

Data

Path

Mode Configuration

Straps

System

Registers

(CSRs)

Register

Access

MUX

Virtual PHY

Registers

MDIO

PHY Management MDIO

Interface (PMI)

MII

Mode

MUX

MDIO

SMI (slave)

Controller

MDIO

I2C Slave

Controller

To optional SMI Master

Mode Configuration

Straps

EEPROM Loader

LAN9303/

LAN9303i

GPIO/LED

Controller

System

Interrupt

Controller

System GP Timer

Clocks/

Reset/PME Free-Run

Controller Clk

EEPROM Controller

I2C

I2C (master)

To optional GPIOs/LEDs

IRQ

External

25MHz Crystal

Figure 2.1 Internal Block Diagram

To optional EEPROM

(via I2C master)

To optional CPU

serial management

(via I2C slave)

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