Dear community,
We have been developing our product with iMX7D.
I hope to use LCD_RS signal.
I am checking the Reference Manual IMX7DRM ,8.1.1.1 Muxing Options
the LCD_RS signal is assigned as follows.
Port : LCD_RS
Pad : ECSPI2_SS0
Mode : ALT4
Pad : LCD1_RESET
Mode : ALT0
However ,for the SW_MUX_CTL_PAD_ECSPI2_SS0 SW MUX Control Register
ALT4 mode is assigned as ALT4_LCD_RESET.
In the same way,for the SW_MUX_CTL_PAD_LCD_RESET SW MUX Control Register
ALT0 mode is assigned as ALT0_LCD_RESET.
[Question]
Which pad is assigned as LCD_RS signal ?
Best Regards,
Koichi Sakagami
Solved! Go to Solution.
Actually, here LCD_RS and LCD_RESET are just two names for the same signal that has two pin multiplexing options: ALT0 on the LCD1_RESET pad and ALT4 on the ECSPI2_SS0 pad, as the Reference Manual document specifies.
Have a great day,
Artur
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Actually, here LCD_RS and LCD_RESET are just two names for the same signal that has two pin multiplexing options: ALT0 on the LCD1_RESET pad and ALT4 on the ECSPI2_SS0 pad, as the Reference Manual document specifies.
Have a great day,
Artur
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Note: If this post answers your question, please click the Correct Answer button. Thank you!
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Hi Artur
I have the same problem, where is LCD_RS, you say it is two names for the same signal, but is it reset or Register Select (RS)?
I am trying to connect a display from Ortus Technology to IMX7D
There are following control signals
On display On IMX7D
RESET LCD_RESET
CS LCD_CS
RS ?????
WR LCD_WR_RWn (8080 mode)
RD LCD_RD_E (8080 mode)
Where to connect the RS signal ?
Regards
Lars Thestrup
Actually, this is just a kind of general-purpose output signal, whose state is controlled by the LCDIFx_CTRL1n[RESET] bit. So, for MPU-type interface it can be used as Register Select, or, for example, as Reset for generic synchronous interface.
Best Regrards,
Artur