LAN9117_08 Datasheet, PDF (10/136 Pages) SMSC Corporation – High Performance Single-Chip 10/100 Non-PCI Ethernet Controller

High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
Datasheet
System Memory
Embedded
Microprocessor/
Microcontroller
System Bus
System Memory
System
Peripherals
LAN9117
Optional
External
PHY
MII
Magnetics
Optional
Magnetics
Ethernet
LEDS/GPIO
25MHz
XTAL
EEPROM
(Optional)
Figure 1.1 System Block Diagram Utilizing the SMSC LAN9117
The SMSC LAN9117 integrated 10/100 MAC/PHY controller is a peripheral chip that performs the
function of translating 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 transactions using the simple SRAM-like host
interface bus.
The diagram shown above, describes a typical system configuration of the LAN9117 in a typical
embedded environment.
The LAN9117 is a general purpose, platform independent, Ethernet controller. The LAN9117 consists
of four major functional blocks. The four blocks are:
„ 10/100 Ethernet PHY
„ 10/100 Ethernet MAC
„ RX/TX FIFOs
„ Host Bus Interface (HBI)
Revision 1.5 (07-11-08)
10
DATASHEET
SMSC LAN9117