Two Port 10/100 Managed Ethernet Switch with 16-Bit Non-PCI CPU Interface System Level Block Diagram To Ethernet I2C/Microwire Magnetics EEPROM (optional) Microprocessor/ Microcontroller LAN9311/LAN9311i To Ethernet Magnetics System Memory GPIOs/LEDs (optional) External 25MHz Crystal System Peripherals Figure 1 System Level Block Diagram Utilizing the LAN9311/LAN9311i Internal Block Diagram IEEE 1588 Time Stamp To Ethernet 10/100 PHY 10/100 MAC IEEE 1588 Time Stamp To Ethernet IEEE 1588 Time Stamp 10/100 PHY 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) 16-bit Host Bus I2 C / Microwire To CPU To optional EEPROM LAN9311/LAN9311i Figure 2 LAN9311/LAN9311i Internal Block Diagram Revision 2.0 (02-14-13) 4 PRODUCT PREVIEW SMSC LAN9311/LAN9311i
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