OMAP-L137
www.ti.com
SPRS563G – SEPTEMBER 2008 – REVISED JUNE 2014
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Function : Do a send-only JTAG IR/DR scan.
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Parameter : The route to JTAG shift state is 'shortest transition'.
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Parameter : The JTAG shift state is 'shift-dr'.
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Parameter : The JTAG destination state is 'pause-dr'.
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Parameter : The bit length of the command is '8'.
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Parameter : The send data value is '0x00000089'.
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Parameter : The actual receive data is 'discarded'.
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Function : Do a send-only JTAG IR/DR scan.
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Parameter : The route to JTAG shift state is 'shortest transition'.
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Parameter : The JTAG shift state is 'shift-ir'.
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Parameter : The JTAG destination state is 'pause-ir'.
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Parameter : The bit length of the command is '6'.
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Parameter : The send data value is '0x00000002'.
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Parameter : The actual receive data is 'discarded'.
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Function : Embed the port address in next command.
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Parameter : The port address field is '0x0f000000'.
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Parameter : The port address value is '3'.
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Function : Do a send-only JTAG IR/DR scan.
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Parameter : The route to JTAG shift state is 'shortest transition'.
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Parameter : The JTAG shift state is 'shift-dr'.
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Parameter : The JTAG destination state is 'pause-dr'.
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Parameter : The bit length of the command is '32'.
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Parameter : The send data value is '0xa3302108'.
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Parameter : The actual receive data is 'discarded'.
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Function : Do a send-only all-ones JTAG IR/DR scan.
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Parameter : The JTAG shift state is 'shift-ir'.
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Parameter : The JTAG destination state is 'run-test/idle'.
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Parameter : The bit length of the command is '6'.
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Parameter : The send data value is 'all-ones'.
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Parameter : The actual receive data is 'discarded'.
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Function : Wait for a minimum number of TCLK pulses.
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Parameter : The count of TCLK pulses is '10'.
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Function : Update the JTAG preamble and post-amble counts.
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Parameter : The IR pre-amble count is '0'.
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Parameter : The IR post-amble count is '6 + 4'.
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Parameter : The DR pre-amble count is '0'.
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Parameter : The DR post-amble count is '1 + 1'.
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Parameter : The IR main count is '4'.
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Parameter : The DR main count is '1'.
6.30.4 JTAG 1149.1 Boundary Scan Considerations
To use boundary scan, the following sequence should be followed:
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Execute a valid reset sequence and exit reset
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Wait at least 6000 OSCIN clock cycles
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Enter boundary scan mode using the JTAG pins
No specific value is required on the EMU[0] pin for boundary scan testing. If TRST is not driven by the
boundary scan tool or tester, TRST should be externally pulled high during boundary scan testing.
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Peripheral Information and Electrical Specifications
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