Bus Blaster buffer logic

From DP

Overview

Bus Blaster v2 is buffered by a reprogrammable CPLD instead of discrete logic chips. New buffer logic can be loaded so the Bus Blaster appears like many common JTAG programmer types. These are the currently available buffer clones.

jtagkey

The JTAGkey is probably the most commonly cloned buffer configuration among FT2232-based JTAG programmers. It is compatible with OpenOCD, urJTAG, and more.

Schematic

• JTAGkey buffer overview

KT-link

The KT-link is the first FT2232 JTAG debugger with support for new SWD and SWV JTAG protocols. The libswd project is working on adding support for SWD to OpenOCD and urJTAG, and the KT-link will be the first supported programmer.

Bus Blaster v2 supports SWD only!

Bus Blaster v2 does not support SWV because one required pin is used to program the CPLD

Schematic