Datasheet LAN9312 (Microchip) - 4

High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface System Level Block Diagram To Ethernet I2C/Microwire Magnetics EEPROM
(optional)
Microprocessor/
Microcontroller LAN9312
To Ethernet
Magnetics System
Memory
GPIOs/LEDs
(optional) External
25MHz Crystal System
Peripherals Figure 1 System Level Block Diagram Utilizing the LAN9312 Internal Block Diagram IEEE 1588
Time Stamp
To Ethernet 10/100
PHY
IEEE 1588
Time Stamp To Ethernet 10/100
PHY IEEE 1588
Time Stamp
10/100
MAC Host MAC Switch Fabric
Host Bus
Host Bus Interface
Interface
10/100
MAC
EEPROM Controller IEEE 1588
Clock & Events Secondary Functions
(Timers,GPIOs,LEDs,IRQ) I2C (master)
Microwire (master) 32-bit
Host Bus I2 C /
Microwire To CPU To optional
EEPROM LAN9312 Figure 2 LAN9312 Internal Block Diagram Revision 2.0 (02-14-13) 4 PRODUCT PREVIEW SMSC LAN9312