LAN9115_05 Datasheet, PDF (10/131 Pages) SMSC Corporation – Highly Efficient Single- Chip 10/100 Non-PCI Ethernet Controller

Highly Efficient Single-Chip 10/100 Non-PCI Ethernet Controller
Datasheet
System Memory
Embedded
Microprocessor/
Microcontroller
System Bus
System Memory
System
Peripherals
LAN9115
Optional
External
PHY
MII
Magnetics
Optional
Magnetics
Ethernet
LEDS/GPIO
25MHz
XTAL
EEPROM
(Optional)
Figure 1.1 System Block Diagram Utilizing the SMSC LAN9115
The SMSC LAN9115 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 LAN9115 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 LAN9115 in a typical
embedded environment.
The LAN9115 is a general purpose, platform independent, Ethernet controller. The LAN9115 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 1.1 (05-17-05)
10
DATASHEET
SMSC LAN9115