Keil Logo

JTAG/SW Device

This section of the dialog displays information about the connected target device. Depending on the selected Port, this section shows the credentials of the SW Device or the JTAG Device Chain.

SW Device shows one or more debug targets connected through the Serial Wire interface. The IDCODE and Device Name are displayed automatically for each device.

JTAG Device Chain shows one or more debug targets connected through the JTAG interface. The IDCODE, Device Name, and IR Length are displayed automatically for each device. Manual Configuration allows identifying undetected JTAG devices. Specify the instruction register length (IR len) of each device in the JTAG device chain.

Target Driver Setup - SW Device

AP specifies the identifier of the Access Port in multi-core devices with a single Debug Port.

  • The AP value range is 0 to 255.
  • For single core devices, set AP to 0 (default).
  • For a multi-core device, core 0 is expected to have AP=0 and core 1 AP=1. However, the port identifiers are specified by the device manufacturer.

If AP contains an invalid identifier, the error message Invalid ROM Table is shown whenever a debugging session is started.

 

  Arm logo
Important information

This site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies.

Change Settings

Privacy Policy Update

Arm’s Privacy Policy has been updated. By continuing to use our site, you consent to Arm’s Privacy Policy. Please review our Privacy Policy to learn more about our collection, use and transfers
of your data.