Table 10-14 Tms Sequencing For Reading Pipeline Registers - Motorola DSP56305 User Manual

Table 10-13 TMS Sequencing for ENABLE_ONCE
Step TMS
a 1 Test-Logic-Reset
b 0 Run-Test/Idle
c 1 Select-DR-Scan
d 1 Select-IR-Scan
e 0
f 0
g 0
h 0
i 0
j 1
k 1
l 0 Run-Test/Idle
................................................
l 0 Run-Test/Idle

Table 10-14 TMS Sequencing for Reading Pipeline Registers

Step TMS
a 0 Run-Test/Idle
b 1 Select-DR-Scan
c 0
d 0
..................................................................
d 0
e 1
MOTOROLA
JTAG Port OnCE Module
Capture-IR
Shift-IR
Shift-IR
Shift-IR
Shift-IR
Exit1-IR
Update-IR
JTAG Port
Capture-DR
Shift-DR
Shift-DR
Exit1-DR
DSP56305 User's Manual
Examples of JTAG and OnCE interaction
Idle
Idle
Idle
Idle
Idle The core status bits are captured.
Idle The four bits of the JTAG
ENABLE_ONCE instruction
Idle
(0110) are shifted into the JTAG
instruction register while status is
Idle
Idle
Idle
Idle The OnCE module is enabled.
Idle This step can be repeated,
enabling an external command
controller to poll the status.
Idle
OnCE Module
Idle
Idle
Idle
Idle
Idle
Idle
On-Chip Emulation Module
Note
shifted out.
Note
The eight bits of the OnCE
command "Read PIL"
(10001011) are shifted in.
10-31