AM1808AZCED3 datasheet(255/264 Pages) TI

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TDI

Router

ARM926EJ-S/ETM

TDO

Steps

CLK

TMS

Router

ARM926EJ-S/ETM

ETB

AM1808

www.ti.com

SPRS653A – FEBRUARY 2010 – REVISED APRIL 2010

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 6-87. 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'.

Peripheral Information and Electrical Specifications

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