Difference between revisions of "ETRA SOM/ETRA Evaluation Kit/Interfaces and Connectors/LCD"

From DAVE Developer's Wiki
Jump to: navigation, search
(Created page with "{{subst:EVB_Interfaces_and_Connectors | nome-som=ETRA | nome-peripheral = LCD}}")
 
Line 1: Line 1:
−
<section begin=History/>
+
<section begin="History" />
 
{| style="border-collapse:collapse; "
 
{| style="border-collapse:collapse; "
−
!colspan="4" style="width:100%; text-align:left"; border-bottom:solid 2px #ededed"|History
+
! colspan="4" style="width:100%; text-align:left" ; border-bottom:solid 2px #ededed" |History
 
|-  
 
|-  
−
!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Version
+
! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white" |Version
−
!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Issue Date
+
! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white" |Issue Date
−
!style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white"|Notes
+
! style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#73B2C7; padding:5px; color:white" |Notes
 
|-
 
|-
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|X.Y.Z
+
| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |1.0.0
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|Month Year
+
| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |Mar 2021
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|TBD
+
| style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000" |First release
 
|-
 
|-
−
|-
 
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|[TBD_link X.Y.Z]
 
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|Month Year
 
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|TBD
 
−
|-
 
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|...
 
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|...
 
−
|style="border-left:solid 2px #73B2C7; border-right:solid 2px #73B2C7;border-top:solid 2px #73B2C7; border-bottom:solid 2px #73B2C7; background-color:#edf8fb; padding:5px; color:#000000"|...
 
 
|-
 
|-
 
|}
 
|}
−
<section end=History/>
+
<section end="History" />
−
<section begin=Body/>
+
<section begin="Body" />
  
 
==LCD interface ==
 
==LCD interface ==
−
 
−
''TBD: sostituire le sezioni con le informazioni sull'uso della periferica e del suo connettore''
 
−
''Nell'esempio di seguito c'è la descrizione dell'interfaccia UART/console''
 
  
 
=== Description  ===
 
=== Description  ===
  
−
The LCD interface available on the Evaluation Kit at the connector ''TBD:Jxxx''.
+
The LCD interface available on the Evaluation Kit at the connector J13.  
−
 
 
−
''Jxx'' is a ''TBD:connector-type'' header connector for the RS232 two-wires UART3 port, used for debug purposes (bootloader and operating system serial console).
 
  
 +
J13 si a 40-pin, 0.5mm pitch, ZIF connector that provides the following signals:
 +
* 18-bit RGB interface
 +
* DE and CLK control signals
 +
* 3.3V power for logic
 +
* 5V power for backlight
 +
* PWM for backlight
  
 
[[File:{{{nome-som}}-EVB-LCD-connector.png|thumb|center|500px|LCD connector]]
 
[[File:{{{nome-som}}-EVB-LCD-connector.png|thumb|center|500px|LCD connector]]
Line 43: Line 36:
  
 
{| class="wikitable"  
 
{| class="wikitable"  
−
! latexfontsize="scriptsize"| Pin#
+
! latexfontsize="scriptsize" | Pin#
−
! latexfontsize="scriptsize"| SOM Pin#
+
! latexfontsize="scriptsize" | SOM Pin#
−
! latexfontsize="scriptsize"| Pin name
+
! latexfontsize="scriptsize" | Pin name
−
! latexfontsize="scriptsize"| Pin function
+
! latexfontsize="scriptsize" | Pin function
−
! latexfontsize="scriptsize"| Pin Notes
+
! latexfontsize="scriptsize" | Pin Notes
 
|-
 
|-
−
|1,2,4,6,,7,8,10
+
|1,2,10,11,12,16,20,24,28,32,36,37,39,40
 
| -
 
| -
−
| N.A.
+
| GND
−
| N.C.
+
| Ground
−
| Not connected
+
|  
 
|-
 
|-
 
| 3
 
| 3
−
| J1.189
+
| J18.46
−
| RS232_RX
+
| LCD_PWM
−
| Receive line
+
| PWM for backlight
 
|  
 
|  
 +
|-
 +
|4,5,6
 +
| -
 +
| LCD_5V
 +
| 5V for LED
 +
| this rail is enabled by the CPU via GPIO
 +
|-
 +
| 7,8
 +
| -
 +
| LCD_VDD
 +
| 3.3V for logic
 +
| this rail is enabled by the CPU via GPIO
 +
|-
 +
|9
 +
|J18.124
 +
|LCD_DE
 +
|LCD_DATA_ENABLE
 +
|
 +
|-
 +
|13
 +
|J18.144
 +
|LCD_B7
 +
|LCD_B7 (MSB)
 +
|
 +
|-
 +
|14
 +
|J18.142
 +
|LCD_B6
 +
|LCD_B6
 +
|
 +
|-
 +
|15
 +
|J18.140
 +
|LCD_B5
 +
|LCD_B5
 +
|
 +
|-
 +
|17
 +
|J18.138
 +
|LCD_B4
 +
|LCD_B4
 +
|
 +
|-
 +
|18
 +
|J18.136
 +
|LCD_B3
 +
|LCD_B3
 +
|
 +
|-
 +
|19
 +
|J18.134
 +
|LCD_B2
 +
|LCD_B2 (LSB)
 +
|
 +
|-
 +
|21
 +
|J18.158
 +
|LCD_G7
 +
|LCD_G7 (MSB)
 +
|the use of this pin prevents the use of eMMC with 8bit bus
 +
|-
 +
|22
 +
|J18.156
 +
|LCD_G6
 +
|LCD_G6
 +
|
 +
|-
 +
|23
 +
|J18.154
 +
|LCD_G5
 +
|LCD_G5
 +
|
 +
|-
 +
|25
 +
|J18.152
 +
|LCD_G4
 +
|LCD_G4
 +
|
 +
|-
 +
|26
 +
|J18.150
 +
|LCD_G3
 +
|LCD_G3
 +
|
 +
|-
 +
|27
 +
|J18.148
 +
|LCD_G2
 +
|LCD_G2 (LSB)
 +
|
 +
|-
 +
|29
 +
|J18.172
 +
|LCD_R7
 +
|LCD_R7 (MSB)
 +
|
 +
|-
 +
|30
 +
|J18.170
 +
|LCD_R6
 +
|LCD_R6
 +
|
 +
|-
 +
|31
 +
|J18.168
 +
|LCD_R5
 +
|LCD_R5
 +
|
 +
|-
 +
|33
 +
|J18.166
 +
|LCD_R4
 +
|LCD_R4
 +
|
 +
|-
 +
|34
 +
|J18.162
 +
|LCD_R3
 +
|LCD_R3
 +
|
 +
|-
 +
|35
 +
|J18.160
 +
|LCD_R2
 +
|LCD_R2 (LSB)
 +
|
 +
|-
 +
|38
 +
|J18.132
 +
|LCD_CLK
 +
|LCD_CLOCK
 +
|
 +
|}
 +
 +
=== Device usage ===
 +
The connector is pinout compatible with the Ampire AM-800480BTMQW-TBSH display.
 +
 +
'''WARNING:''' the use of the LCD peripheral prevents the use of the eMMC on board of the ETRA SOM as 8bit bus, only 4bit bus is available.
 +
 +
=== Alternate connector ===
 +
The ETRA SBC provides a secondary LCD connector (not mounted by default) for the use of 24bit LCD interface.
 +
 +
==== Description ====
 +
The 24-bit LCD interface can be available for the Evaluation Kit at the connector J14. For the use of this interface please send an e-mail to [mailto:helpdesk@dave.eu helpdesk@dave.eu]
 +
 +
J14 si a 40-pin, 0.5mm pitch, ZIF connector that provides the following signals:
 +
* 24-bit RGB interface
 +
* DE, CLK, HSYNC and VSYNC control signals
 +
* 3.3V power for logic
 +
* 5V power for backlight
 +
* PWM for backlight
 +
* two GPIO signals for panel configuration
 +
 +
====Signals ====
 +
 +
The following table describes the interface signals:
 +
 +
{| class="wikitable"
 +
! latexfontsize="scriptsize" | Pin#
 +
! latexfontsize="scriptsize" | SOM Pin#
 +
! latexfontsize="scriptsize" | Pin name
 +
! latexfontsize="scriptsize" | Pin function
 +
! latexfontsize="scriptsize" | Pin Notes
 +
|-
 +
|9,18,27,36,40
 +
| -
 +
| GND
 +
| Ground
 +
|
 +
|-
 +
|1,2
 +
| -
 +
| LCD_5V
 +
| 5V for LED
 +
| this rail is enabled by the CPU via GPIO
 
|-
 
|-
 
| 3
 
| 3
−
| J1.187
+
| J18.46
−
| RS232_TX
+
| LCD_PWM
−
| Transmit line
+
| PWM for backlight
 
|  
 
|  
 
|-
 
|-
−
| 9
+
|4
 +
|J18.58
 +
|LCD_5V_EN
 +
|LCD_5V power enable
 +
|can be used as GPIO if the 5V power switch is bypassed
 +
|-
 +
| 5.6
 
| -
 
| -
−
| DGND
+
| LCD_VDD
−
| Ground
+
| 3.3V for logic
−
|  
+
| this rail is enabled by the CPU via GPIO
 +
|-
 +
|7
 +
|'''''TBD'''''
 +
|LCD_DISP
 +
|'''''TBD'''''
 +
|can be statically configured with pull-up or pull-down
 +
|-
 +
|8
 +
|J18.124
 +
|LCD_DE
 +
|LCD_DATA_ENABLE
 +
|
 +
|-
 +
|10
 +
|J18.144
 +
|LCD_B7
 +
|LCD_B7 (MSB)
 +
|
 +
|-
 +
|11
 +
|J18.142
 +
|LCD_B6
 +
|LCD_B6
 +
|
 +
|-
 +
|12
 +
|J18.140
 +
|LCD_B5
 +
|LCD_B5
 +
|
 +
|-
 +
|13
 +
|J18.138
 +
|LCD_B4
 +
|LCD_B4
 +
|
 +
|-
 +
|14
 +
|J18.136
 +
|LCD_B3
 +
|LCD_B3
 +
|
 +
|-
 +
|15
 +
|J18.134
 +
|LCD_B2
 +
|LCD_B2
 +
|
 +
|-
 +
|16
 +
|J18.176
 +
|LCD_B1
 +
|LCD_B1
 +
|
 +
|-
 +
|17
 +
|J18.174
 +
|LCD_B0
 +
|LCD_B0 (LSB)
 +
|the use of this pin prevents the use of eMMC with 8bit bus
 +
|-
 +
|19
 +
|J18.158
 +
|LCD_G7
 +
|LCD_G7 (MSB)
 +
|the use of this pin prevents the use of eMMC with 8bit bus
 +
|-
 +
|20
 +
|J18.156
 +
|LCD_G6
 +
|LCD_G6
 +
|
 +
|-
 +
|21
 +
|J18.154
 +
|LCD_G5
 +
|LCD_G5
 +
|
 +
|-
 +
|22
 +
|J18.152
 +
|LCD_G4
 +
|LCD_G4
 +
|
 +
|-
 +
|23
 +
|J18.150
 +
|LCD_G3
 +
|LCD_G3
 +
|
 +
|-
 +
|24
 +
|J18.148
 +
|LCD_G2
 +
|LCD_G2
 +
|
 +
|-
 +
|25
 +
|J18.180
 +
|LCD_G1
 +
|LCD_G1
 +
|the use of this pin prevents the use of uSD with 4bit bus
 +
|-
 +
|26
 +
|J18.178
 +
|LCD_G0
 +
|LCD_G0 (LSB)
 +
|
 +
|-
 +
|28
 +
|J18.172
 +
|LCD_R7
 +
|LCD_R7 (MSB)
 +
|
 +
|-
 +
|29
 +
|J18.170
 +
|LCD_R6
 +
|LCD_R6
 +
|
 +
|-
 +
|30
 +
|J18.168
 +
|LCD_R5
 +
|LCD_R5
 +
|
 +
|-
 +
|31
 +
|J18.166
 +
|LCD_R4
 +
|LCD_R4
 +
|
 +
|-
 +
|32
 +
|J18.162
 +
|LCD_R3
 +
|LCD_R3
 +
|
 +
|-
 +
|33
 +
|J18.160
 +
|LCD_R2
 +
|LCD_R2
 +
|
 +
|-
 +
|34
 +
|J18.184
 +
|LCD_R1
 +
|LCD_R1
 +
|the use of this pin prevents the use of eMMC with 8bit bus
 +
|-
 +
|35
 +
|J18.182
 +
|LCD_R0
 +
|LCD_R0 (LSB)
 +
|
 +
|-
 +
|37
 +
|J18.130
 +
|LCD_HSYNC
 +
|LCD_HORIZONTAL_SYNC
 +
|the use of this pin prevents the use of eMMC with 8bit bus
 +
|-
 +
|38
 +
|J18.132
 +
|LCD_CLK
 +
|LCD_CLOCK
 +
|
 +
|-
 +
|39
 +
|J18.128
 +
|LCD_VSYNC
 +
|LCD_VERTICAL_SYNC
 +
|
 
|}
 
|}
−
 
−
=== Device mapping ===
 
−
UART3 is mapped to <code>/dev/ttymxc2</code> device in Linux. The peripheral is used as the default serial console, both for the bootloader and the kernel.
 
  
 
=== Device usage ===
 
=== Device usage ===
−
 
+
'''WARNING:''' the use of the 24bit LCD peripheral prevents the use of the eMMC on board of the ETRA SOM as 8bit bus, only 4bit bus is available. It also prevents the use of uSD device as 4bit bus, only 1bit bus is available.
−
To connect to the debug serial port:
 
−
 
 
−
# connect the DB9 adapter bracket to the J22 connector on the SBCX board
 
−
# connect a serial cable between DB9 connector and PC COM port through a NULL-modem cable (not provided)
 
−
# start your favorite terminal emulator software on PC (eg: PuTTY); communication parameters are: 115200,N,8,1
 
  
 
----
 
----
  
 
[[Category:ETRA]]
 
[[Category:ETRA]]

Revision as of 14:09, 30 March 2021

HOME SOMs SBCs ToloMEO Embedded Assistant Sale-tag.pngGET A QUOTE Customer-service.pngONLINE HELPDESK
Roadmap IoT Services ML/AI services Embedded Design Services
History
Version Issue Date Notes
1.0.0 Mar 2021 First release


LCD interface[edit | edit source]

Description[edit | edit source]

The LCD interface available on the Evaluation Kit at the connector J13.

J13 si a 40-pin, 0.5mm pitch, ZIF connector that provides the following signals:

  • 18-bit RGB interface
  • DE and CLK control signals
  • 3.3V power for logic
  • 5V power for backlight
  • PWM for backlight

[[File:{Template:Nome-som-EVB-LCD-connector.png|thumb|center|500px|LCD connector]]

Signals[edit | edit source]

The following table describes the interface signals:

Pin# SOM Pin# Pin name Pin function Pin Notes
1,2,10,11,12,16,20,24,28,32,36,37,39,40 - GND Ground
3 J18.46 LCD_PWM PWM for backlight
4,5,6 - LCD_5V 5V for LED this rail is enabled by the CPU via GPIO
7,8 - LCD_VDD 3.3V for logic this rail is enabled by the CPU via GPIO
9 J18.124 LCD_DE LCD_DATA_ENABLE
13 J18.144 LCD_B7 LCD_B7 (MSB)
14 J18.142 LCD_B6 LCD_B6
15 J18.140 LCD_B5 LCD_B5
17 J18.138 LCD_B4 LCD_B4
18 J18.136 LCD_B3 LCD_B3
19 J18.134 LCD_B2 LCD_B2 (LSB)
21 J18.158 LCD_G7 LCD_G7 (MSB) the use of this pin prevents the use of eMMC with 8bit bus
22 J18.156 LCD_G6 LCD_G6
23 J18.154 LCD_G5 LCD_G5
25 J18.152 LCD_G4 LCD_G4
26 J18.150 LCD_G3 LCD_G3
27 J18.148 LCD_G2 LCD_G2 (LSB)
29 J18.172 LCD_R7 LCD_R7 (MSB)
30 J18.170 LCD_R6 LCD_R6
31 J18.168 LCD_R5 LCD_R5
33 J18.166 LCD_R4 LCD_R4
34 J18.162 LCD_R3 LCD_R3
35 J18.160 LCD_R2 LCD_R2 (LSB)
38 J18.132 LCD_CLK LCD_CLOCK

Device usage[edit | edit source]

The connector is pinout compatible with the Ampire AM-800480BTMQW-TBSH display.

WARNING: the use of the LCD peripheral prevents the use of the eMMC on board of the ETRA SOM as 8bit bus, only 4bit bus is available.

Alternate connector[edit | edit source]

The ETRA SBC provides a secondary LCD connector (not mounted by default) for the use of 24bit LCD interface.

Description[edit | edit source]

The 24-bit LCD interface can be available for the Evaluation Kit at the connector J14. For the use of this interface please send an e-mail to helpdesk@dave.eu

J14 si a 40-pin, 0.5mm pitch, ZIF connector that provides the following signals:

  • 24-bit RGB interface
  • DE, CLK, HSYNC and VSYNC control signals
  • 3.3V power for logic
  • 5V power for backlight
  • PWM for backlight
  • two GPIO signals for panel configuration

Signals[edit | edit source]

The following table describes the interface signals:

Pin# SOM Pin# Pin name Pin function Pin Notes
9,18,27,36,40 - GND Ground
1,2 - LCD_5V 5V for LED this rail is enabled by the CPU via GPIO
3 J18.46 LCD_PWM PWM for backlight
4 J18.58 LCD_5V_EN LCD_5V power enable can be used as GPIO if the 5V power switch is bypassed
5.6 - LCD_VDD 3.3V for logic this rail is enabled by the CPU via GPIO
7 TBD LCD_DISP TBD can be statically configured with pull-up or pull-down
8 J18.124 LCD_DE LCD_DATA_ENABLE
10 J18.144 LCD_B7 LCD_B7 (MSB)
11 J18.142 LCD_B6 LCD_B6
12 J18.140 LCD_B5 LCD_B5
13 J18.138 LCD_B4 LCD_B4
14 J18.136 LCD_B3 LCD_B3
15 J18.134 LCD_B2 LCD_B2
16 J18.176 LCD_B1 LCD_B1
17 J18.174 LCD_B0 LCD_B0 (LSB) the use of this pin prevents the use of eMMC with 8bit bus
19 J18.158 LCD_G7 LCD_G7 (MSB) the use of this pin prevents the use of eMMC with 8bit bus
20 J18.156 LCD_G6 LCD_G6
21 J18.154 LCD_G5 LCD_G5
22 J18.152 LCD_G4 LCD_G4
23 J18.150 LCD_G3 LCD_G3
24 J18.148 LCD_G2 LCD_G2
25 J18.180 LCD_G1 LCD_G1 the use of this pin prevents the use of uSD with 4bit bus
26 J18.178 LCD_G0 LCD_G0 (LSB)
28 J18.172 LCD_R7 LCD_R7 (MSB)
29 J18.170 LCD_R6 LCD_R6
30 J18.168 LCD_R5 LCD_R5
31 J18.166 LCD_R4 LCD_R4
32 J18.162 LCD_R3 LCD_R3
33 J18.160 LCD_R2 LCD_R2
34 J18.184 LCD_R1 LCD_R1 the use of this pin prevents the use of eMMC with 8bit bus
35 J18.182 LCD_R0 LCD_R0 (LSB)
37 J18.130 LCD_HSYNC LCD_HORIZONTAL_SYNC the use of this pin prevents the use of eMMC with 8bit bus
38 J18.132 LCD_CLK LCD_CLOCK
39 J18.128 LCD_VSYNC LCD_VERTICAL_SYNC

Device usage[edit | edit source]

WARNING: the use of the 24bit LCD peripheral prevents the use of the eMMC on board of the ETRA SOM as 8bit bus, only 4bit bus is available. It also prevents the use of uSD device as 4bit bus, only 1bit bus is available.

HOME SOMs SBCs ToloMEO Embedded Assistant Sale-tag.pngGET A QUOTE Customer-service.pngONLINE HELPDESK
Roadmap IoT Services ML/AI services Embedded Design Services
Retrieved from "https://wiki.dave.eu/index.php?title=ETRA_SOM/ETRA_Evaluation_Kit/Interfaces_and_Connectors/LCD&oldid=13365"