LAN9117 Datasheet, PDF (5/114 Pages) SMSC Corporation – HIGH PERFORMANCE SINGLE-CHIP 10/100 NON-PCI ETHERNET CONTROLLER

LAN9117
FIGURE 1-1:
SYSTEM BLOCK DIAGRAM UTILIZING THE LAN9117
System Memory
Embedded
Microprocessor/
Microcontroller
System Bus
System Memory
System
Peripherals
LAN9117
Optional
External
MII
PHY
Magnetics
Optional
Magnetics
Ethernet
LEDS/GPIO
25MHz
XTAL
EEPROM
(Optional)
The Microchip LAN9117 integrated 10/100 MAC/PHY controller is a peripheral chip that performs the function of trans-
lating parallel data from a host controller into Ethernet packets. The LAN9117 Ethernet MAC/PHY controller is designed
and optimized to function in an embedded environment. All communication is performed with programmed I/O transac-
tions using the simple SRAM-like host interface bus.
The diagram shown above, describes a typical system configuration of the LAN9117 in a typical embedded environ-
ment.
The LAN9117 is a general purpose, platform independent, Ethernet controller. The LAN9117 consists of four major func-
tional blocks. The four blocks are:
• 10/100 Ethernet PHY
• 10/100 Ethernet MAC
• RX/TX FIFOs
• Host Bus Interface (HBI)
 2005-2016 Microchip Technology Inc.
DS00002267A-page 5