Hardware Manual: emSTAMP- emSBC-Argon (Rev1)
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5.8
FD-CAN
The emSTAMP-Argon supports both CAN modules of the STM32MP157 (FDCAN1 and FDCAN2).
Both are compliant with ISO 11898-1 (CAN protocol specification version 2.0 part A, B) and CAN FD
protocol specification version 1.0.
Module Pin
CPU Pin Name
Signal
Direction
(module view )
Termination
13
PB13
FDCAN2_TX
O
14
PB12
FDCAN2_RX
I
34
PD1
FDCAN1_TX
O
35
PD0
FDCAN1_RX
I
5.9
SD card interface
For the SD card interface the SDIO port (SDMMC1) of the STM32MP157 is used. The interface is 4-
bit wide and compatible with the SD Memory Card Specification Version 3.01 SDR50.
Module Pin
CPU Pin Name
Signal
Direction
(module view )
Termination
56
PB7
SDMMC1_CD#
I
57
PC11
SDMMC1_D3
I/O
58
PC10
SDMMC1_D2
I/O
59
PC9
SDMMC1_D1
I/O
60
PC8
SDMMC1_D0
I/O
61
PD2
SDMMC1_CMD
O
62
PC12
SDMMC1_CK
O
The interface SDMMC1 can be used as boot device during SD card boot. Minimum set of required
signals for SD card boot are in
bold.
5.10
UART/USARTs
The emSTAMP-Argon provides 3 U(S)ART interfaces on its castellated mounting holes. The USART
ports USART2 and USART3 are both implemented with CTS/RTS flow control. The UART4 port is
used as UART interface without flow control. All ports are able to communicate at speeds up to
10Mbit/s.
Module Pin
CPU Pin Name
Signal
Direction
(module view )
Termination
36
PG11
UART4_TX
O
37
PB2
UART4_RX
I
64
PB10
USART3_TX
O
65
PD9
USART3_RX
I
66
PG8
USART3_RTS
O
67
PD11
USART3_CTS
I
79
PD3
USART2_CTS
I
80
PD4
USART2_RTS
O
81
PD6
USART2_RX
I
82
PD5
USART2_TX
O
