Optional Manufacturer And Debug Connectors - Seco Qseven CQ7-A42 User Manual

3.3.20 Optional Manufacturer and Debug Connectors

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According to Qseven specifications, on MXM connector there are some pins that are reserved for manufacturing and debugging purposes
(MFG_NC0÷MFG_NC4).
These signals are reserved to the manufacturer of the Qseven CPU module, so it is not recommended to use them. Anyway, as a factory option, they can be
available on two different connectors.
MFG_NCx signals can be used, by the Qseven
about the proper assignment of JTAG / UART signals to the MFG_NCx signals (although the assignment shall correspond to that defined by the Qseven
specifications).
JP1 position MFG_NC1 and MFG_NC2
routed to
Not inserted Manufacturer connector CN2
Inserted Debug USB port CN27
Manufacturer Connector - CN2
Pin Signal
1 +3.3V_A
2 MFG_NC3
3 MFG_NC0
4 MFG_NC1
5 MFG_NC2
6 MFG_NC4
7 GND
The second optional connector, CN27, is a standard mini-B USB receptacle, which will give access to the debug USB port. This is obtained by
converting the debug UART signals to USB, using a Silicon Labs
For this purpose, it is necessary that debug UART signals are routed to the bridge, by using the jumper JP1, as specified in the table above.
By using Silicon Labs ® VCP drivers, available at http://www.silabs.com/products/interface/usbtouart/Pages/usb-to-uart-bridge.aspx, the debug USB port will be
exploitable by any COM port application, running on the Qseven
have to work in device (i.e. client) mode.
CQ7-A42
CQ7-A42 - Rev. First Edition: 1.0 - Last Edition: 2.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
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module, as a JTAG port or Debug UART. Please refer to the User manual of the Qseven
Moreover, debug UART signals (available on MFG_NC1 and MFG_NC2 pins of Qseven
connector), can be routed to a standard connector or to an USB-to-UART bridge, which will allow the
implementation of a more useful debug USB port. Selection is made using jumper JP1, according to
the table on the left.
The first optional connector, CN2, is a 1.25mm pitch connector, type MOLEX p/n 53398-0771 or
equivalent.
Mating connector: MOLEX 51021-0700 receptacle with MOLEX 50058 or 50079 crimp terminals.
Please be aware that Debug UART, when routed to this connector (on pins dedicated to signals MFG_NC1
and MFG_NC2) will be available at TTL level, i.e. it cannot be used for a direct connection to a common
RS-232 serial port (like those available on PCs).
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CP2104 USB-to-UART bridge.
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module, exactly like if it were a standard serial port. Please remember that Qseven
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module for information
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® card edge
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module will
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