Freescale Semiconductor MPC5748G EVB, User Manual

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MPC5748G EVB User Guide, User Guide, Rev. 0, 08/2015
16 Freescale Semiconductor, Inc.
5.4. Debug Connectors (P8, P10)
The EVB provides two debug connectors:

Standard 14 pin JTAG

50 Pin Nexus connector (Samtec ASP-148422-01, Nexus Standard HP50 connector)
There is no user configuration required to use the connectors however the following points should be
noted:

The JTAG connector is routed to the JTAG signals in the default position which are powered
from the MCU VDD_HV_A power domain. The Nexus signals are located in the VDD_HV_B
power domain. If you are using Nexus, you may have to ensure that the VDD_HV_A and
VDD_HV_B domains are at the same voltage. Consult your tools vendor for specific information

The Nexus signals are not bonded out in every MCU package. Before using Nexus, please ensure
the MCU fitted to the EVB (via the daughtercard) supports the Nexus signals.
5.4.1. Debug Connector Pinouts
The following tables list the pinouts for each of the debug connectors used on the EVB
Table 9. 14-Pin JTAG Debug Connector Pinout
Pin No Function Connection Pin No Function Connection
1 TDI PC0 2 GND GND
3 TDO PC1 4 GND GND
5 TCLK PH9 6 GND GND
7 EVTI PL8 8 N/C ---
9 RESET JTAG-RSTx 10 TMS PH10
11 VREF PER_HVA 12 GND GND
13 RDY --- 14 JCOMP 10K Pulldown
Table 10. 50-pin Samtec (Nexus) Debug Connector Pinout
Pin No Function Connection Pin No Function Connection
1 MSEO_0 PL9 2 VREF PER_HVB
3 MSEO_1 PL11 4 TCK PH9
5 GND GND 6 TMS PH10
7 MDO0 PL2 8 TDI PC0
9 MDO1 PL3 10 TDO PC1
11 GND GND 12 JCOMP 10K Pulldown
13 MDO2 PL4 14 RDY ---
15 MDO3 PL5 16 EVTI PL8
17 GND GND 18 EVTO PL12
19 MCKO PL10 20 RESET DBUG_RST
21 MDO4 PL6 22 RST_OUT MCU_RST
23 GND GND 24 GND GND
25 MDO5 PL7 26 CLKOUT Test Point
27 MDO6 PL13 28 TD/WT ---
29 GND GND 30 GND GND
The JTAG and
Nexus debug
connectors are in
the top right corner
of the EVB