MB1936

Applicable for

This article provides an overview of the MB1936 main board.

1. Board overview[edit | edit source]

Main board MB1936, revision D-01: part of the STM32MP257x-EV1 Evaluation board .

Information

It is highly recommended to work with a main board MB1936, revision D-01 instead of a main board MB1936, revision C-01, because the latter presents the following restrictions:

Low-power modes are not functional.
DSI HDMI is not functional (one line (DISP.DSI_INT = PD10) for CEC is not present in Rev. C, while it is available on Rev. D).


Position	Description	Position	Description
1 (LED1)	User LED (blue) ^{[* 1]}	2 (LD1)	User LED (red) ^{[* 1]}
3 (LD2)	User LED (orange) ^{[* 1]}	4 (LD3)	User LED (green) ^{[* 1]}
5 (B1)	RESET button	6 (B2)	WAKE UP button
7(B3)	TAMPER button	8 (B4)	USER2 button
9 (B5)	USER1 button	10 (CN2)	LVDS connector
11(CN4)	CSI connector	12(CN3)	DSI connector
13 (CN1)	microSD^™ card connector	14 (SW1)	Boot mode selection
15 (U22)	S-NOR 512Mb	16 (CN5)	GPIO expansion connector
17 (CN9)	FDCAN1	18 (CN11)	FDCAN2
19 (U26)	STPMIC25	20 (U27)	STM32MP257
21 (U24)	eMMC 4GB	22 (U29)	DDR4 2GB
23(U28)	DDR4 2GB	24 (CN10)	PWR measurements connector
25 (CN22)	MIPI10 connector	26 (CN13)	Mini-PCIe connector
27 (JP4)	Power jumper	28 (CN20)	5V/3A power supply jack
29 (CN21)	USB Power - ST-LINK Type-C	30 (CN16)	ETHERNET 2 / PHY ETH2
31 (CN17)	ETHERNET 1 / PHY ETH1	32 (CN18)	ETHERNET 3 / PHY ETH3
33 (CN19)	Dual USB Host TypeA	34 (CN15)	USB2.0 DRD Type-C
35 (LD7)	Ethernet LED (green)^{[* 2]}	36 (LD8)	Ethernet LED (green)^{[* 2]}
37 (LD9)	Ethernet LED (green)^{[* 2]}	38 (LD11)	Power LED (green)^{[* 3]}
39 (LD5)	ST-LINK/V3-1 LED (bicolor)^{[* 4]}	-	-

Details about the LEDs:

↑ ^1.0 ^1.1 ^1.2 ^1.3 LD2, LD3, LD4, LD5 (MB1936): some user LEDs are used to reflect the system activity, while others are left free for use by the application, as explained in the LEDs and buttons on STM32 MPU boards article.
↑ ^2.0 ^2.1 ^2.2 LD7, LD8, LD9 (MB1936): these LEDs blink in green when an Ethernet connection has been established
↑ LD11 (MB1936): turns green when a power connection has been established.
↑ LD6 (MB1263): blinks in red if the ST-LINK/V3-1 connection was not established, otherwise it is green.

STM32MP257x-EV1 Evaluation board front side
STM32MP257F-EV1 shown here (picture is not contractual)

STM32MP257x-EV1 Evaluation board back side
STM32MP257A-EV1 shown here (picture is not contractual)

Position	Description
40 (CN25)	mikroBUS^™ connector

2. Links[edit | edit source]

MB1936 schematics

[User_LEDs-1] 1.0 ^1.1 ^1.2 ^1.3 LD2, LD3, LD4, LD5 (MB1936): some user LEDs are used to reflect the system activity, while others are left free for use by the application, as explained in the LEDs and buttons on STM32 MPU boards article.

[Ethernet_LEDs-2] 2.0 ^2.1 ^2.2 LD7, LD8, LD9 (MB1936): these LEDs blink in green when an Ethernet connection has been established

[3] LD11 (MB1936): turns green when a power connection has been established.

[4] LD6 (MB1263): blinks in red if the ST-LINK/V3-1 connection was not established, otherwise it is green.

[* 1]

[* 2]

[* 3]

[* 4]