Page History
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| Note |
|---|
| JTAGMODE pin 89 in B2B connector JM1 is used to select which device is accessible. Low - Xilinx Zynq, High - System Controller CPLD. |
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System Controller I/O Pins
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| Pin Name | Mode | Function | Default Configuration |
|---|---|---|---|
| RESIN | Input | Reset input | Active low reset input, default mapping forces POR_B reset to Zynq PS. |
| PGOOD | Output | Power good | Active high when all on-module power supplies are working properly. |
| MODE | Input | Boot mode | Force low for boot from the SD card. Latched at power-on only, not during soft reset! |
| EN1 | Input | Power enable | High enables the DC-DC converters and on-board supplies. Not used if NOSEQ is high. |
| NOSEQ | Input | Power sequencing | Forces the 1.0V and 1.8V DC-DC converters always ON when high. |
| JTAGMODE | Input | JTAG select | Keep low for FPGA JTAG access. |
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Default MIO Mapping
| MIO | Function | B2B Pin | Notes | MIO | Function | B2B Pin | Notes |
|---|---|---|---|---|---|---|---|
| 0 | GPIO | JM1-87 | - | 27 | ETH0 | - | ETH-RXCTL |
| 1 | QSPI0 | - | SPI-CS | 28 | USB0 | - | OTG-DATA4 |
| 2 | QSPI0 | - | SPI-DQ0 | 29 | USB0 | - | OTG-DIR |
| 3 | QSPI0 | - | SPI-DQ1 | 30 | USB0 | - | OTG-STP |
| 4 | QSPI0 | - | SPI-DQ2 | 31 | USB0 | - | OTG-NXT |
| 5 | QSPI0 | - | SPI-DQ3 | 32 | USB0 | - | OTG-DATA0 |
| 6 | QSPI0 | - | SPI-SCK | 33 | USB0 | - | OTG-DATA1 |
| 7 | GPIO | - | SC CPLD pin P11 | 34 | USB0 | - | OTG-DATA2 |
| 8 | - | - | 3.3V pull-up | 35 | USB0 | - | OTG-DATA3 |
| 9 | - | JM1-91 | B2B | 36 | USB0 | - | OTG-CLK |
| 10 | - | JM1-95 | B2B | 37 | USB0 | - | OTG-DATA5 |
| 11 | - | JM1-93 | B2B | 38 | USB0 | - | OTG-DATA6 |
| 12 | - | JM1-99 | B2B | 39 | USB0 | - | OTG-DATA7 |
| 13 | - | JM1-97 | B2B | 40 | SD0 | JM1-27 | B2B, MIO40 |
| 14 | - | JM1-92 | B2B, SC CPLD pin M4 | 41 | SD0 | JM1-25 | B2B, MIO41 |
| 15 | - | JM1-85 | B2B, SC CPLD pin N4 | 42 | SD0 | JM1-23 | B2B, MIO42 |
| 16 | ETH0 | - | ETH-TXCK | 43 | SD0 | JM1-21 | B2B, MIO43 |
| 17 | ETH0 | - | ETH-TXD0 | 44 | SD0 | JM1-19 | B2B, MIO44 |
| 18 | ETH0 | - | ETH-TXD1 | 45 | SD0 | JM1-17 | B2B, MIO45 |
| 19 | ETH0 | - | ETH-TXD2 | 46 | SD1 | - | MMC-D0 |
| 20 | ETH0 | - | ETH-TXD3 | 47 | SD1 | - | MMC-CMD |
| 21 | ETH0 | - | ETH-TXCTL | 48 | SD1 | - | MMC-CLK |
| 22 | ETH0 | - | ETH-RXCK | 49 | SD1 | - | MMC-D1 |
| 23 | ETH0 | - | ETH-RXD0 | 50 | SD1 | - | MMC-D2 |
| 24 | ETH0 | - | ETH-RXD1 | 51 | SD1 | - | MMC-D3 |
| 25 | ETH0 | - | ETH-RXD2 | 52 | ETH0 | - | ETH-MDC |
| 26 | ETH0 | - | ETH-RXD3 | 53 | ETH0 | - | ETH-MDIO |
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