External Bus Interface

{{Short description|Computer bus}}

{{Infobox Computer Hardware Bus

| name = EBI

| fullname = External Bus Interface

}}

The external bus interface, usually shortened to EBI, is a computer bus for interfacing small peripheral devices like flash memory with the processor. It is used to expand the internal bus of the processor to enable connection with external memories or other peripherals. EBI can be used to share I/O pins controlling memory devices that are connected to two different memory controllers. Use of EBI reduces the total number of system pins required causing the system cost to come down. EBI manufacturers include Barco,

{{cite web

| url= http://www.barco.com/projection_systems/downloads/BA318_FS.pdf

| title= Barco External Bus Interface (EBI) BA318

| last=

| first=

| date=

| website=

| publisher= Barco NV

| access-date=

| archive-url= https://web.archive.org/web/20120317082448/http://www.barco.com/projection_systems/downloads/BA318_FS.pdf

| archive-date= 2012-03-17

| quote=

}}

Freescale Semiconductor,

[http://www.nxp.com/docs/en/application-note/AN2708.pdf An Introduction to the External Bus Interface on the HCS12X], Freescale Semiconductor

Microchip,

[http://ww1.microchip.com/downloads/en/DeviceDoc/60001245A.pdf "PIC32 Family Reference Manual: Section 47. External Bus Interface (EBI)"].

Atmel,

[http://www.atmel.com/images/doc8058.pdf "AVR1312: Using the XMEGA External Bus Interface"].

and Silicon Labs.

[https://www.silabs.com/documents/public/application-notes/AN0034.pdf "EFM32 External Bus Interface AN0034 - Application Note"].