User's Manual l TQMa7x UM 0203 l © 2022, TQ-Systems GmbH
Page 28
3.2.5.9
LCD
The i.MX7 provides a parallel display interface. All signals are supplied by a 3.3 V power domain.
Information regarding supported displays and formats are to be taken from the i.MX7 Reference Manuals (5), (6).
The following table shows the signals used by the LCD interface.
Table 28:
LCD interface
Signal
Direction
Pin
Remark
LCD_DATA23
O
X2-108
–
LCD_DATA22
O
X2-105
–
LCD_DATA21
O
X2-106
–
LCD_DATA20
O
X2-103
–
LCD_DATA19
O
X2-104
–
LCD_DATA18
O
X2-101
–
LCD_DATA17
O
X2-102
–
LCD_DATA16
O
X2-99
–
LCD_DATA15
O
X2-98
–
LCD_DATA14
O
X2-95
–
LCD_DATA13
O
X2-96
–
LCD_DATA12
O
X2-93
–
LCD_DATA11
O
X2-94
–
LCD_DATA10
O
X2-91
–
LCD_DATA09
O
X2-92
–
LCD_DATA08
O
X2-89
–
LCD_DATA07
O
X2-88
–
LCD_DATA06
O
X2-85
–
LCD_DATA05
O
X2-86
–
LCD_DATA04
O
X2-83
–
LCD_DATA03
O
X2-84
–
LCD_DATA02
O
X2-81
–
LCD_DATA01
O
X2-82
–
LCD_DATA00
O
X2-79
–
LCD_HSYNC
O
X2-76
–
LCD_VSYNC
O
X2-78
–
LCD_CLK
O
X2-72
–
LCD_ENABLE
O
X2-68
–
LCD_RESET#
O
X2-75
–
Display signals LCD_DATA[19:0] also serve as BOOT_CFG[19:0] signals, to load the boot configuration.
It has to be ensured, that displays connected to the carrier board do not interfere with the boot configuration loaded at these
pins. Alternatively the Serial Downloader or the internal eFuses can be used.
Attention: Faulty boot process, malfunction
To avoid cross-supply and errors in the power-up sequence, no I/O pins may be driven by external
components until the power-up sequence has been fully completed.
The end of the power-up sequence is indicated by a high level of signal VCC3V3_MB_EN.
Suitable precautions have to be implemented on the carrier board to avoid violations caused e.g.
by a display connected at the boot configuration pins.
It also has to be ensured that the circuitry at the boot configuration pins (e.g., Pull-Downs) does not
interfere with the function of a display connected at these pins.
