Embedian SMARC-iMX8M Series, User Manual, Page: 70 / 174

Embedian, Inc.
70
SMARC-iMX8M Computer on Module User’s Manual v.1.0
2.1.13.2. ESPI Signals
i.MX8M processor ROM does not support Q SPI device boot up either. The
Carrier QSPI device cannot be selected as the Boot Device – see Section
4.3 Boot Select.
Edge Golden
Finder
Signal Name
Direction Type
Tolerance
Description
ESPI_CS0# Output CMOS
1.8V QSPI Master Chip Select 0 output
ESPI_CS1# Output CMOS
1.8V QSPI Master Chip Select 1 output
ESPI_CK Output CMOS
1.8V QSPI Master Clock output
ESPI_IO_[0:3] Bi‐Dir CMOS
1.8V QSPI Master Data input/output
ESPI_RESET# Output CMOS
1.8V QSPI Reset Reset the QSPI interface for both
master and slaves.
ESPI_ALERT[0:1]# Input CMOC
1.8V Not Supported