AM1802 datasheet(169/180 Pages) TI1

169 / 180 page

TDI

Router

ARM926EJ-S/ETM

TDO

Steps

CLK

TMS

Router

ARM926EJ-S/ETM

ETB

AM1802

www.ti.com

SPRS710C – NOVEMBER 2010 – REVISED MARCH 2012

•

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'.

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Parameter : The JTAG destination state is 'pause-dr'.

–

Parameter : The bit length of the command is '32'.

–

Parameter : The send data value is '0xa2002108'.

–

Parameter : The actual receive data is 'discarded'.

•

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'.

–

Parameter : The actual receive data is 'discarded'.

•

Function : Wait for a minimum number of TCLK pulses.

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Parameter : The count of TCLK pulses is '10'.

•

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'.

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Parameter : The DR pre-amble count is '0'.

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Parameter : The DR post-amble count is '1'.

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Parameter : The IR main count is '4'.

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Parameter : The DR main count is '1'.

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.

Figure 5-56. 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'.

Peripheral Information and Electrical Specifications

169

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