AM1707 datasheet(186/198 Pages) TI

186 / 198 page

TDI

Router

ARM926EJ-S/ETM

TDO

Steps

CLK

TMS

Router

ARM926EJ-S/ETM

ETB

AM1707

SPRS637A – FEBRUARY 2010 – REVISED APRIL 2010

www.ti.com

•

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 '0xa2002108'.

–

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'.

–

Parameter : The JTAG destination state is 'run-test/idle'.

–

Parameter : The bit length of the command is '6'.

–

Parameter : The send data value is 'all-ones'.

–

Parameter : The actual receive data is 'discarded'.

•

Function : Wait for a minimum number of TCLK pulses.

–

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

•

Function : Update the JTAG preamble and post-amble counts.

–

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

–

Parameter : The IR post-amble count is '6'.

–

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

–

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

–

Parameter : The IR main count is '4'.

–

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 6-72. 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'.

186

Peripheral Information and Electrical Specifications

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