Overview of the ARM Pins

In the following table you will find an overview of the pin mapping of the SoC MIO pins (ARM pins of the SoCs’ Processing System). All accessible MIO pins through a connector are labeled with the appropriate carrier board schematic label in column Schematic Connector Label and the connector pin in column CB-Pin (CB –> Carrier Board). The connectivity between MIO pin and the four user LEDs is shown by column LED.

Table 63 Overview of the MIO Pins

SoC-Pin	Interface Type	Xilinx Name	SoM-Pin	Schematic Connector Label	CB-Pin	LED
MIO0	QSPI	sclk_out
MIO1	QSPI	io[1]
MIO2	QSPI	io[2]
MIO3	QSPI	io[3]
MIO4	QSPI	si_mio[0]
MIO5	QSPI	n_ss_out
MIO6	QSPI	clk_for_lpbk
MIO7	QSPI	n_ss_out_upper
MIO8	QSPI	upper_io[0]
MIO9	QSPI	upper_io[1]
MIO10	QSPI	upper_io[2]
MIO11	QSPI	upper_io[3]
MIO12	QSPI	sclk_out_upper
MIO13	GPIO	io[13]	J3-72	EXT_GPIO1	X13-3	LED1
MIO14	I2C_0	scl	J3-74
MIO15	I2C_0	sda	J3-76
MIO16	I2C_1	scl	J3-78	EXT_I2C1_SCL	X10-6
MIO17	I2C_1	sda	J3-80	EXT_I2C_SDA	X10-12
MIO18	UART0	rxd	J3-82	PS_UART0_RX	X8-7
MIO19	UART0	txd	J3-71	PS_UART0_TX	X8-3
MIO20	UART1	txd	J3-73	EXT_UART1_TX	X10-11
MIO21	UART1	rxd	J3-75	EXT_UART1_RX	X10-5
MIO22	CAN_0	phy_rx	J3-77	CAN_RXD1	P1A-1
MIO23	CAN_0	phy_tx	J3-79	CAN_TXD1	P1A-2
MIO24	CAN_1	phy_tx	J3-81	CAN_TXD2	P1B-2
MIO25	CAN_1	phy_rx	J3-83	CAN_RXD2	P1B-1
MIO26	PS_JTAG	tck	J3-88	PJTAG0_TCK	X9-9
MIO27	PS_JTAG	tdi	J3-90	PJTAG0_TDI	X9-5
MIO28	PS_JTAG	tdo	J3-92	PJTAG0_TDO	X9-13
MIO29	PS_JTAG	tms	J3-94	PJTAG0_TMS	X9-7
MIO30	GPIO1	io[4]	J3-96	PS_DIG_GPIO_01	X6-77
MIO31	GPIO1	io[5]	J3-98	PS_DIG_GPIO_02	X6-78
MIO32	SPI_1	sclk	J3-87	isoSPI_SCLK_3V3	X12-5
MIO33	GPIO1	io[7]	J3-89	EXT_GPIO2	X13-4	LED2
MIO34	GPIO1	io[8]	J3-91	EXT_GPIO3	X13-11	LED3
MIO35	SPI_1	n_ss_out[0]	J3-93	isoSPI_CS_3V3	X12-6
MIO36	SPI_1	miso	J3-95	isoSPI_MISO_3V3	X12-3
MIO37	SPI_1	mosi	J3-97	isoSPI_MOSI_3V3	X12-2
MIO38	SPI_0	sclk	J3-102	EXT_SPI0_SCLK	X10-4
MIO39	GPIO1	io[13]	J3-104	EXT_GPIO4	X13-12	LED4
MIO40	GPIO1	io[14]	J3-106	EXT_GPIO5	X13-6
MIO41	SPI_0	n_ss_out[0]	J3-108	EXT_SPI0_CS	X10-10
MIO42	SPI_0	miso	J3-110	EXT_SPI0_MISO	X10-9
MIO43	SPI_0	mosi	J3-112	EXT_SPI0_MOSI	X10-3
MIO44	GPIO1	io[18]	J3-101	PS_ANL_GPIO_01	X5-56
MIO45	GPIO1	io[19]	J3-103	PS_ANL_GPIO_02	X5-59
MIO46	SD-Card1	data_io[0]	J3-105
MIO47	SD-Card1	data_io[1]	J3-107
MIO48	SD-Card1	data_io[2]	J3-109
MIO49	SD-Card1	data_io[3]	J3-111
MIO50	SD-Card1	cmd_io	J3-113
MIO51	SD-Card1	clk_out	J3-114
MIO52	GPIO2	io[0]	J3-118	PS_GPIO7	X13-14
MIO53	GPIO2	io[1]	J3-120	PS_GPIO6	X13-7
MIO54	GPIO2	io[2]	J3-122
MIO55	GPIO2	io[3]	J3-124	PS_GPIO8	X13-15
MIO56	GPIO2	io[4]	J3-126
MIO57	GPIO2	io[5]	J3-128
MIO58	GPIO2	io[6]	J3-117
MIO59	GPIO2	io[7]	J3-119
MIO60	GPIO2	io[8]	J3-121
MIO61	GPIO2	io[9]	J3-123
MIO62	GPIO2	io[10]	J3-125
MIO63	GPIO2	io[11]	J3-127
MIO64	Ethernet	rgmii_tx_clk	J3-131
MIO65	Ethernet	rgmii_txd[0]	J3-133
MIO66	Ethernet	rgmii_txd[1]	J3-135
MIO67	Ethernet	rgmii_txd[2]	J3-137
MIO68	Ethernet	rgmii_txd[3]	J3-139
MIO69	Ethernet	rgmii_tx_ctl	J3-141
MIO70	Ethernet	rgmii_rx_clk	J3-132
MIO71	Ethernet	rgmii_rxd[0]	J3-134
MIO72	Ethernet	rgmii_rxd[1]	J3-136
MIO73	Ethernet	rgmii_rxd[2]	J3-138
MIO74	Ethernet	rgmii_rxd[3]	J3-140
MIO75	Ethernet	rgmii_rx_ctl	J3-142
MIO76	MDIO3	gem3_mdc	J3-143
MIO77	MDIO3	gem3_mdio	J3-144

Interface description

The following diagrams show the signal flow of all communication interfaces.

I2C0

• I2C0 is shared over all Digital- and Analog-Adapter-Sockets –> this is in order to read out errors after the “Collective Fault” switched of in an error case!

• I2C0 is also used to configure the PLL chip Si5345 during start-up, which sets up all clocks. See the Trenz-Elektronik Wiki

        graph TD
        SoM[SoM]
        SoM --> |1.8 V| U4A(CPLD U4A)
        SoM --> |1.8 V| U4B(CPLD U4B)
        SoM --> |1.8 V| U4C(CPLD U4C)
        SoM --> |1.8 V| U4D(CPLD U4D)
        SoM --> |1.8 V| U4E(CPLD U4E)
        SoM --> |1.8 V| U30[Level Shifter U30]
        U30 --> |3.3 V| A1(A1)
        U30 --> |3.3 V| A2(A2)
        U30 --> |3.3 V| A3(A3)
        U30 --> |3.3 V| D1(D1)
        U30 --> |3.3 V| D2(D2)
        U30 --> |3.3 V| D3(D3)
        U30 --> |3.3 V| D4(D4)
        U30 --> |3.3 V| D5(D5)
    

I2C1

• I2C1 is for free use but without isolated interface

        graph LR
        SoM[SoM]
        SoM --> |1.8 V| U14[Level Shifter U14]
        U14 --> |3.3 V| X10
    

UART0

• UART0 is available at the XMOD connector for the TE0790 module (JTAG interface)

        graph LR
        SoM[SoM]
        SoM --> |1.8 V| X8
    

UART1

• UART_1 is for free use, but without isolated interface

        graph LR
        SoM[SoM]
        SoM --> |1.8 V| U14(Level Shifter, U14)
        U14 --> |3.3 V| X10
    

CAN0

        graph LR
        SoM[SoM]
        SoM --> |1.8 V| U6A(CAN PHY, U6A<br>Isolation)
        SoM --> |1.8 V| P1A(P1A)
        U6A --> |5.0 V| X7A
    

CAN1

        graph LR
        SoM[SoM]
        SoM --> |1.8 V| U6B(CAN PHY, U6B<br>Isolation)
        SoM --> |1.8 V| P1B(P1B)
        U6B --> |5.0 V| X7B
    

SPI0

        graph LR
        SoM[SoM]
        SoM --> |1.8 V| U14(Level Shifter, U14)
        U14 --> |3.3 V| X10
    

SPI1

        graph LR
        SoM[SoM]
        SoM --> |1.8 V| U17(Level Shifter, U17)
        U17 --> |3.3 V| U18(Digital Isolator, U6A<br>Isolation)
        U18 --> |3.3 V| X12
    

Ethernet

        graph LR
        SoM[SoM]
        SoM --> |1.8 V| U2(U2 <br> ETH PHY)
        U2 --> |3.3 V| X4(X4 <br> RJ45)
    

GPIO0, GPIO1, GPIO2

        graph LR
        SoM[SoM]
        SoM --> |1.8 V| U25(U25 <br> Level Shifter)
        U25 --> |3.3 V| U24(U24 <br> Digital Isolator)
        U25 --> |3.3 V| U26(U26 <br> Digital Isolator)
        U24 --> |3.3 V| IO_protection(I/O Protection <br> TVS, PTC Fuse)
        U26 --> |3.3 V| IO_protection
        IO_protection --> X13
        SoM --> |1.8 V| LEDs
        SoM --> |1.8 V| X11
    

PJTAG

        graph LR
        SoM[SoM]
        SoM --> |1.8 V| X9
    

Pin capabilities

For detailed information see the Xilinx Technical Refrence Manual UG1085 (v2.2) for the Zynq UltraScale+

The MIO interface description can be found on page under chapter 28 Multiplexed I/O (Table 28-3: MIO Interfaces).