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September 2015 DocID022669 Rev 3 1/42
1
AN4035
Application note
Flash programming through Nexus/JTAG
Introduction
The SPC56x/RPC56x family of devices has internal Flash used for code and data. The
Nexus debug interface can be used to program the Flash using the JTAG communication
protocol through the JTAG port. This allows programming of the internal Flash by an
external tool.
This application note first addresses the JTAG and Nexus communication protocol. The
JTAG discussion includes the JTAG signals, TAP controller state machine, and the JTAG
controller. The explanation of Nexus includes the on-chip emulation (OnCE) module and the
Nexus read/write (R/W) access block.
Nexus/JTAG Flash programming supports the following products:
SPC563Mxx
SPC564Axx
SPC56APxx
SPC560Dxx
SPC560Bxx
SPC564Bxx
SPC560Cxx
SPC560Pxx
SPC56ECxx
SPC56ELxx
RPC56ELxx
RPC560Bxx
RPC564Bxx
RPC56APxx
RPC564Axx
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