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i.MX8 SMARC SOM Hardware User Guide
iWave Systems Technologies Pvt. Ltd.
SMARC
Pin No.
SMARC Edge
Signal Name
CPU Ball Name/
Pin Number
Signal Type/
Termination
Description
P46
SPI3_MOSI
SPI3_MOSI/
BF2
O, 1.8V CMOS
SPI0 Master Out Slave In
The i.MX8 SMARC SOM supports 2
nd
SPI channels of the SMARC Edge connector with SPI2 or QSPI1A of CPU interface.
But in default configuration SPI2 is connected over ESPI pins. QSPI1A maximum clock speed very from 60MHz to
200MHZ in different mode which can be supported over SPI pins by contacting iWave support team.
For more details on 2
nd
SPI pinouts, refer below table:
SMARC
Pin No.
SMARC Edge
Signal Name
CPU Ball Name/
Pin Number
Signal Type/
Termination
Description
P54
SPI2_CS0
SPI2_CS0/
AW1
or
QSPI1A_SS0/
J11
O, 1.8V CMOS
SPI2 Chip Select 0.
Note: Optionally connected to
QSPI1A_ Chip Select 0
P55
QSPI1A_SS1
QSPI1A_SS1/
G11
O, 1.8V CMOS
QSPI1A_ Chip Select 1
Note: Can be used as GPIO4_20
P56
SPI2_SCLK
SPI2_SCK/
AW5
or
QSPI1A_SCLK/
F10
O, 1.8V CMOS/
33E Series
SPI2 Clock
Note: Optionally connected to
QSPI1A_ Clock
P57
SPI2_MISO
SPI2_SDI/
AY4
or
QSPI1A_DATA0/
D12
or
QSPI1A_DATA1/
D14
IO, 1.8V CMOS
SPI2 Master In Slave Out.
Note: Optionally connected to
QSPI1A_DATA0 and QSPI1A_DATA1
P58
SPI2_MOSI
SPI2_SDO/
BA1
or
QSPI1A_DATA1/
D14
or
QSPI1A_DATA0/
D12
IO, 1.8V CMOS
SPI2 Master Out Slave In
Note: Optionally connected to
QSPI1A_DATA0 and QSPI1A_DATA1
S56
QSPI1A_DATA2
QSPI1A_DATA2/
E13
IO, 1.8V CMOS
QSPI1A DATA lane 2
S57
QSPI1A_DATA3
QSPI1A_DATA3/
E11
IO, 1.8V CMOS
QSPI1A DATA lane 3
S58
QSPI1A_RESET(GPIO4_22) QSPI1A_DQS/
H12
O, 1.8V CMOS
QSPI1A RESET