Espi - ADLINK Technology SMARC MODULE LEC-EL Product Specification

LEC-EL Product specification

4.3.12 ESPI

Name Pin # Description
ESPI_CS0# P54 ESPI1 Master Chip Select 0
ESPI_CS1# P55 ESPI1 Master Chip Select 1
ESPI_CK P56 ESPI Master Clock output
ESPI_RESET# S58 ESPI Reset
ESPI_ALERT0# S43 ESPI ALERT
ESPI_ALERT1# S44
ESPI_IO_0 P58 ESPI Master Data Input /
ESPI_IO_1 P57 Output.
ESPI_IO_2 S56
ESPI_IO_3 S57
Page 9
I/O I/O Power PU / PD
Type Level Domain
O 1.8V Standby
CMOS
O 1.8V Standby
CMOS
O 1.8V Standby
CMOS
O 1.8V Standby
CMOS
I OD 1.8V Standby
CMOS
I/O 1.8V Standby
CMOS
copyright © 2021 ADLINK Technology Inc.
Comments
Reset the eSPI interface for both master and slaves.
eSPI Reset# is typically driven from eSPI master to eSPI slaves
This pin is used by eSPI slave to request service from eSPI.master.Alert# is an
open-drain output from the slave.
This pin is optional for Single Master-Single Slave configuration where I/O[1] can
be used to signal the Alert event.
ESPI_IO_0 can also be used as SPI1_DO (MOSI)
ESPI_IO_1 can also be used as SPI1_DIN (MISO)
In Single I/O mode, ESPI_IO_0 is the eSPI master output / eSPI slave input (MOSI)
whereas ESPI_IO_1 is the SPI master input / eSPI slave output (MISO).
SGET SMARC Rev 2.1