AM1806 Datasheet, PDF (234/241 Pages) Texas Instruments – AM1806 ARM Microprocessor

AM1806
SPRS658 – FEBRUARY 2010
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The initial scan chain contains only the TAP router module. The following steps must be completed in
order to add ETB TAP to the scan chain.
TDI
TDO
CLK
TMS
Router
ARM926EJ-S/ETM
Steps
Router
ARM926EJ-S/ETM
ETB
Figure 6-79. Adding ETB to the scan chain
• 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'.
• 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 '32'.
– Parameter : The send data value is '0xa3302108'.
– Parameter : The actual receive data is 'discarded'.
• Function : Do a send-only all-ones JTAG IR/DR scan.
– Parameter : The JTAG shift state is 'shift-ir'.
234 Peripheral Information and Electrical Specifications
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