Intel PXA27 Series Design Manual page 269

D.26 Debug/Test
This subsection describes separate changes to the software debug module and the hardware TAP
controller (also referred to as the Test Interface from the PXA25x processor).
D.26.1 Software Debug Module
There were no changes to the software debug module.
D.26.2 Test Interface
The TAP controllers in the PXA27x processor and PXA25x processor are similar with the
exceptions of the following changes.
•
Features added to the PXA27x processor TAP controller:
— JTAG instructions added to shorten the boundary scan chain while programming flash
(flash load, flash program)
•
Enhancements to the PXA27x processor TAP controller:
— Instruction register increased from 5-bits to 7-bits in length
The part numbers found in the JTAG ID Code registers for the specific processors:
•
PXA250
•
PXA210
•
PXA27x processor
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Intel PXA27x Processor Family Design Guide
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Intel PXA27x Processor and Intel
0b1001_0010_0110_0100 [0x9264]
0b1001_0010_0110_1100 [0x926C]
0b1001_0010_0110_0101 [0x9265]
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PXA25x Processor Differences
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D-15