Nexus Development Interface (NDI)
PXN20 Microcontroller Reference Manual, Rev. 1
36-54 Freescale Semiconductor
36.6.10.3.5 Program Trace Timing Diagrams
Figure 36-37. Program Trace (MDO = 12)—Indirect Branch Message (Traditional)
Figure 36-38. Program Trace (MDO = 2)—Indirect Branch Message (History)
Figure 36-39. Program Trace—Direct Branch (Traditional) and Error Messages
MDO[11:0]
MCKO
MSEO
[1:0]
TCODE = 4
Source Processor = 0b0000
Number of Sequence Instructions = 128
Relative Address = 0xA5
01
11
00
0000 0010 0000
0000 1010 0101
0000 0000 0100
MDO[1:0]
TCODE = 28
MCKO
MSEO
Source Processor = 0b0000
Number of Sequential Instructions = 0
Relative Address = 0xA5
Branch History = 0b1010_0101 (with Stop)
11 01 00 00 00 01 01 10 10 01 01 10 1000 00
Note: This is representative only. The PXN20 supports only Full-Port Mode with 12 MDO pins.
MDO[1:0]
DBM:
MCKO
MSEO
TCODE = 3
Source Processor = 0b0000
Number of Sequential Instructions = 3
00 00 00 00 11 00 00 10 00 00 00 01 00 00
Error:
TCODE = 8
Source Processor = 0b0000
Error Code = 1 (Queue Overrun – BTM Only)
ErrorDirect Branch
11
Note: This is representative only. The PXN20 x supports only Full-Port Mode with 12 MDO pins.
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