UM2049
User manual
DSI to LCD adapter board
Introduction
The DSI to LCD adapter board provides a flexible connector from the microcontroller
motherboard (Samtec high speed connector QTH-030) to the standard display connector
(TE 1-1734248).The DSI to LCD adapter board can be used on STM32 evaluation boards or
STM32 Discovery boards to connect the display.
The B-LCDAD-RPI1 adapter board features up to two lanes of MIPI/DSI data and I2C
interface support, and enables the use of extended displays with standard DSI interface on
STM32 EVAL/DK board family.
Figure 1. Adapter board (left: backside, right: front)
1. Pictures are not contractual.
December 2016
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www.st.com
1
Contents
UM2049
Contents
1
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Hardware layout and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
Motherboard connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4
DSI to LCD connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Appendix A Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
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List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Motherboard connector CN2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
LCD connector CN1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
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List of figures
UM2049
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
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Adapter board (left: backside, right: front) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Board schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
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UM2049
1
Ordering information
Ordering information
To order the B-LCDAD-RPI1 adapter board, refer to Table 1:
Table 1. Ordering information
Product
B-LCDAD-RPI1
B-LCDAD-RPI1 adapter board
Hardware layout and configuration
The board is designed for easy use of the DSI to LCD display.
The block diagram shown in Figure 2 illustrates the DSI and I2C control connection on the
DSI to LCD adapter board. Figure 3 indicates how to locate the components on the
evaluation board (both front and back side are shown).
Figure 2. Block diagram
'6,VLJQDOV
'6,W2/&'
DGDSWHUERDUG
/&'FRQQHFWRU
0RWKHUERDUG
0&8
0RWKHUERDUGFRQQHFWRU
2
Order code
&DEOH
/&'GLVSOD\
&RQWUROVLJQDOV
06Y9
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Hardware layout and configuration
UM2049
Figure 3. Board layout
&1PRWKHUERDUGFRQQHFWRU
ERWWRPVLGH
&1'6,WR
/&'FRQQHFWRU
06Y9
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3
Motherboard connector
Motherboard connector
A male high speed connector CN2 on bottom side is used to implement DSI to
LCD adapter board on the motherboard. Two-lanes DSI signals and control signals (I2C
bus) are on this connector. The pinout is detailed in Table 2.
Table 2. Motherboard connector CN2
Pin number
(odd)
Description
Interface
Pin number
(even)
Description
Interface
1
GND
-
2
-
-
3
DSI_CK_P
DSI
4
-
-
5
DSI_CK_N
DSI
6
-
-
7
GND
-
8
-
-
9
DSI_D0_P
DSI
10
-
-
11
DSI_D0_N
DSI
12
-
-
13
GND
-
14
-
-
15
DSI_D1_P
DSI
16
-
-
17
DSI_D1_N
DSI
18
-
-
19
GND
-
20
-
-
21
-
-
22
-
-
23
-
-
24
-
-
25
-
-
26
-
-
27
-
-
28
-
-
29
-
-
30
-
-
31
-
-
32
-
-
33
-
-
34
-
-
35
-
-
36
+3.3V
-
37
-
-
38
-
-
39
-
-
40
I2C_SDA
I2C
41
-
-
42
-
-
43
-
-
44
I2C_SCL
I2C
45
-
-
46
-
-
47
-
-
48
-
-
49
-
-
50
-
-
51
-
-
52
-
-
53
-
-
54
-
-
55
-
-
56
-
-
57
-
-
58
-
-
59
-
-
60
-
-
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DSI to LCD connector
4
UM2049
DSI to LCD connector
A standard DSI to LCD connector CN1 is implemented on DSI to LCD adapter board. The
pinout is detailed in Table 3.
Table 3. LCD connector CN1
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Pin number
Description
Pin number
Description
1
GND
16
-
2
DSI_D1_N
17
-
3
DSI_D1_P
18
-
4
GND
19
-
5
DSI_CK_N
20
-
6
DSI_CK_P
21
-
7
GND
22
-
8
DSI_D0_N
23
-
9
DSI_D0_P
24
-
10
GND
25
-
11
I2C_SCL
26
-
12
I2C_SDA
27
-
13
GND
28
-
14
+3.3V
29
-
15
+3.3V
30
-
DocID029199 Rev 2
Schematics
UM2049
Appendix A
Figure 4. Board schematics
CN2
DSI_CK_P
DSI_CK_N
DSI_D0_P
DSI_D0_N
DSI_D1_P
DSI_D1_N
DocID029199 Rev 2
CN1
DSI_D1_N
DSI_D1_P
DSI_CK_N
DSI_CK_P
DSI_D0_N
DSI_D0_P
VDD
I2C_SCL
I2C_SDA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1-1734248-5
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
61
62
63
64
1
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4
6
8
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60
2
4
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26
28
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58
60
VDD
I2C_SDA
C1
100nF
I2C_SCL
QTH-030-02-F-D-A
Connector for LCD
Connector for motherboard
Project: DSI to LCD Adapter
Size: A4
Reference: MB1233
9/11
Date: 10/12/2016
Revision: A.2
Sheet: 1 of 1
Schematics
Title: Overview
Revision history
UM2049
Revision history
Table 4. Document revision history
10/11
Date
Revision
Changes
30-May-2016
1
Initial release.
15-Dec-2016
2
Changed LCD reference in every paragraph of the
document.
DocID029199 Rev 2
UM2049
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