lan9117 Standard Microsystems Corp., lan9117 Datasheet - Page 10

• Manufacturer Part Number: lan9117
• Description: Lan9117 High-performance Single-chip 10/100 Non-pci Ethernet Controller
• Manufacturer: Standard Microsystems Corp.

Revision 1.5 (07-11-08)
Microprocessor/
Microcontroller
System Memory
Embedded
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)
Figure 1.1 System Block Diagram Utilizing the SMSC LAN9117
System Bus
DATASHEET
System Memory
LAN9117
25MHz
XTAL
Peripherals
System
10
High Performance Single-Chip 10/100 Non-PCI Ethernet Controller
(Optional)
EEPROM
MII
Magnetics
LEDS/GPIO
External
Optional
PHY
Magnetics
Optional
SMSC LAN9117
Ethernet
Datasheet