Page 28
Figure 11
– JTAG Interface
Programming the 7Z045 via Boundary-scan mode requires a JTAG download cable. For more
information about JTAG download cables, perform a search on the Xilinx web page
using the key words “Programming Cables”.
JP10 can be used to allow the JTAG programmer’s reset pin to assert the 7Z045 PS_SRST# signal.
If using the Xilinx PC4 JTAG module (14-pin connector) the reset output on the cable is pin 14.
If using the JTAG-SMT2 module pin 7 is the reset output.
Since the Mini-Module Plus Baseboard 2 does not give access to these signals via the JX1
and JX2 connectors the reset signal from either or both sources can be connected to the ZMMP
with wire jumpers.
NOTE
: JP10 must be placed in either position to allow the 7Z045 PS Block to come out of
reset. If no jumper is placed the 7Z045 will be non-functional. By default this jumper is
populated in position 2-3.
2.8.3
PJTAG Interface (ARM DAP)
The Zynq 7Z045 Mini-Module Plus Development Board has a dedicated JTAG connector that
can be used to debug/trace the PS ARM processor via third party debugger/trace modules.
This 20-pin connector is referenced on the board as J5. This JTAG connector cannot be used
for 7Z045 configuration. The PJTAG signals are connected to pins on the 7Z045 at bank 9.
The table below shows the connections between J5 and the 7Z045.
J5 PIN
SIGNAL NAME
7Z045 PIN
5
PJTAG_TDI
Y20
7
PJTAG_TMS
AA20
9
PJTAG_TCK
AB19
13
PJTAG_TDO
AB20
Table 16
– PJTAG Pin Assignments
JP8 gives the user an option to provide a reference voltage to the third party debugger module if required