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<!-- Connections and Interfaces or B2B Pin's which are accessible by User --> |
B2B Connector
With the TEBA0841 TEBB0714 Carrier Board's Board-to-Board Connectors (B2B) the MIO- and PL I/O-bank's pins and further interfaces of the mounted SoM can be accessed. A large quantity of these I/O's are also usable as differential pairs. The connectors provide also VCCIO voltages to operate the I/O's properly.
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| B2B Connector | Interfaces | Count of I/O's | Notes | ||
|---|---|---|---|---|---|
| JM1 | User I/O | 42 54 single ended or 21 differential27 differential | - | ||
| MGT lanes | 4 differential pairs, 2 lanes | - | |||
| MGT reference clock input | 1 | SD IO | 6 | - | |
| MIOJTAG | 84 | - | |||
| SoM control signals | 12 | 'BOOTMODE' | |||
| JB2 | MGT lanes | 8 differential pairs, 4 lanes | - | ||
| PROG_B', 'DONE' | |||||
| ADC interface | 1 differential pair | - | |||
| JM2 | User I/O | 38 single ended or 18 differential | - | ||
| SFP+ Interface control signals | 8 | - | MGT reference input clock | 1 differential pair | |
| USB2.0 (OTG and device mode) | 4 | - | |||
| QSPI interface | 6 | User I/O | 42 single ended 21 differential | -- | |
| JTAG | 4 | - | |||
| User LEDs | 2 | Red, Green | Red user LED | 1 | - |
| SoM control signals | 1 | 'RESINBOOTMODE' |
Table 1: General overview of PL I/O signals and SoM's interfaces connected to the B2B connectors.
On-board Pin Header
The TEBA0841 TEBB0714 Carrier Board has 4 footprints as soldering pads to mount 2.54mm grid size pin headers to get access the PL I/O-bank's pins and further interfaces of the mounted SoM. With these pin headers, SoM's PL-I/O's are available to the user, a large quantity of these I/O's are also usable as differential pairs.
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| On-board Pin Header | Control Signals and Interfaces | Count of I/O's | Notes | ||
|---|---|---|---|---|---|
| J17 | User I/O | 42 36 single ended or 21 18 differential | - | ||
| QSPI interface | 6 | - | |||
| J20 | User I/O | 42 single ended or 21 differential | - | ||
| J3 | JTAG | 4 | - | ||
| UART | 2 | - | |||
| SoM control signals | 2 | 'RESINBOOTMODE', 'BOOTMODE'PROG_B' | |||
| ADC | 1 differential pair | - | |||
| MGT reference clock input clock | 1 differential pair | AC decoupled on-board (100 nF capacitor) | MIO | 2 | user IO (configurable as UART for example) |
| J4 | SD IOUser I/O | 6 single ended or 3 differential | 3.3V and 1.8V , 3.3V_OUT voltage level available on header |
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| XMOD Header Designator | VCC / VCCIO | Direction | Pins | Notes |
|---|---|---|---|---|
| JX1 | 3.3V | Out | 5 | connected to 3.3V external supply voltage |
| VIO | Out | 6 | ||
| J3 | 3.3V | Out | 5 | connected to 3.3V external supply voltage |
| 3.3V | Out | 6 |
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