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Q7-962
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Q7-962 User Manual - Rev. First Edition: 1.0 - Last Edition: 3.1 - Author: S.B. - Reviewed by P.Z Copyright © 2016 SECO S.r.l.
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3.2.1.15
Manufacturing signals
According to Qseven
®
Standard specifications, rel. 2.0, on pin designed as MFG_NCx (pins 204, 207÷210) can be carried the JTAG signal of the i.MX6
processor.
Pins 208 and 209 are multiplexed, according to the above mentioned specifications, with NXP i.MX6 Internal UART #2 signals TX and RX.
Selection between JTAG and UART DEBUG signals is made by driving the MFG_NC4 signal carried on pin 204, with the following meaning:
MFG_NC4 signal level
Pin 208 (MFG_NC2) signal
Pin 209 (MFG_NC1) signal
LOW
UART_DEBUG_RX
UART_DEBUG_TX
HIGH
JTAG_TDI
JTAG_TDO
In case the MFG_NC4 signal is not driven externally, then an internal pull-down makes UART_DEBUG_RX and UART_DEBUG_TX signals on pin 208 and 209
available.
MFG_NC0 can be connected to JTAG_TCK, while MFG_NC3 can be connected to JTAG_TMS.
Please be aware that
JTAG interface is not available on Qseven gold finger connector, since MFG_NC0 and
MFG_NC3 signals are used for other purposes during the manufacturing phase; it must not be used by the customer.
In case it is necessary to trace the software using any JTAG debugger, it is possible to provide
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Q7-962 modules configured with
MFG_NC0 and MFG_NC3 pins connected to i.MX6 JTAG port. Please contact your Sales Representative for this.
