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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
S105
DP_AUX_P
EDP_AUX_P/BH2
Or
HDMI_TX0_DDC
_SCL /BG1
O, 1.8V CMOS/
0.1uF AC Couple
NC.
Note: Optionally connected to Display
Port AUX Positive
S106
DP_AUX_N
EDP_AUX_N/BG3
Or
HDMI_TX0_DDC
_SDA /BN5
IO, 1.8V CMOS/
0.1uF AC Couple
NC.
Note: Optionally connected to Display
Port AUX Negative
2.7.9
MIPI DSI/LVDS Display Interface
SMARC Specification supports two display interfaces over edge connector, which can be either LVDS or MIPI DSI
display. The i.MX8 CPU supports two MIPI DSI and four LVDS display channels. An option is provided on i.MX8 SMARC
SOM to support either LVDS or MIPI DSI over the edge connector and in default configuration MIPI DSI is supported.
The i.MX8 CPU MIPI_DSI standard controller is a flexible, high-performance, and easy-to-use digital core that
implements all protocol functions defined in the MIPI DSI Specification. The MIPI DSI controller provides an interface
that allows communication with MIPI DSI-compliant peripherals. The MIPI DSI D-PHY is a high frequency, low power,
low-cost, source-synchronous, physical layer supporting the MIPI Alliance standard for D-PHY.
For more details on DSI pinouts, refer below table:
SMARC
Pin No.
SMARC Edge
Signal Name
CPU Ball Name/
Pin Number
Signal Type/
Termination
Description
S107
LCD1_BKLT_EN
(GPIO1_15)
LVDS1_I2C1_SDA/
BN35
O, 1.8V CMOS
LCD1 Backlight Enable
S108
MIPI_DSI1_CLK_P
MIPI_DSI1_CLK
_P /BG31
or
LVDS1_CH1_CLK
_P/ BM34
O, MIPI
MIPI DSI1 differential Clock positive
Note: Optionally connected to
LVDS1_CH1 differential Clock positive
S109
MIPI_DSI1_CLK_N
MIPI_DSI1_CLK
_N /BH30
or
LVDS1_CH1_CLK
_N/ BK34
O, MIPI
MIPI DSI1 differential Clock negative
Note: Optionally connected to
LVDS1_CH1 differential Clock negative
S111
MIPI_DSI1_TX0_P
MIPI_DSI1_DATA0
_P /BG33
or
LVDS1_CH1_TX0
_P/ BN37
O, MIPI
MIPI DSI1 differential data lane 0
positive
Note: Optionally connected to
LVDS1_CH1 differential data lane 0
positive
S112
MIPI_DSI1_TX0_N
MIPI_DSI1_DATA0
_N/ BH32
or
LVDS1_CH1_TX0
_N/ BL37
O, MIPI
MIPI DSI1 differential data Lane 0
negative
Note: Optionally connected to
LVDS1_CH1 differential data Lane 0
negative