TDO
Router
TDI
Steps
CLK
TMS
Router
ARM926EJ-S/ETM
OMAP-L137
www.ti.com
SPRS563G – SEPTEMBER 2008 – REVISED JUNE 2014
Figure 6-71. Adding ARM926EJ-S to the scan chain
Pre-amble
: The device whose data reaches the emulator first is listed first in the board configuration file.
This device is a pre-amble for all the other devices. This device has the lowest device ID.
Post-amble
: The device whose data reaches the emulator last is listed last in the board configuration file.
This device is a post-amble for all the other devices. This device has the highest device ID.
•
Function : Update the JTAG preamble and post-amble counts.
–
Parameter : The IR pre-amble count is '0'.
–
Parameter : The IR post-amble count is '0'.
–
Parameter : The DR pre-amble count is '0'.
–
Parameter : The DR post-amble count is '0'.
–
Parameter : The IR main count is '6'.
–
Parameter : The DR main count is '1'.
•
Function : Do a send-only JTAG IR/DR scan.
–
Parameter : The route to JTAG shift state is 'shortest transition'.
–
Parameter : The JTAG shift state is 'shift-ir'.
–
Parameter : The JTAG destination state is 'pause-ir'.
–
Parameter : The bit length of the command is '6'.
–
Parameter : The send data value is '0x00000007'.
–
Parameter : The actual receive data is 'discarded'.
•
Function : Do a send-only JTAG IR/DR scan.
–
Parameter : The route to JTAG shift state is 'shortest transition'.
–
Parameter : The JTAG shift state is 'shift-dr'.
–
Parameter : The JTAG destination state is 'pause-dr'.
–
Parameter : The bit length of the command is '8'.
–
Parameter : The send data value is '0x00000089'.
–
Parameter : The actual receive data is 'discarded'.
•
Function : Do a send-only JTAG IR/DR scan.
–
Parameter : The route to JTAG shift state is 'shortest transition'.
–
Parameter : The JTAG shift state is 'shift-ir'.
–
Parameter : The JTAG destination state is 'pause-ir'.
–
Parameter : The bit length of the command is '6'.
–
Parameter : The send data value is '0x00000002'.
–
Parameter : The actual receive data is 'discarded'.
•
Function : Embed the port address in next command.
–
Parameter : The port address field is '0x0f000000'.
–
Parameter : The port address value is '3'.
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Peripheral Information and Electrical Specifications
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