DS26522 JTAG Scan Chain Mapping

Abstract: This application note describes the JTAG hardware boundary scan chain for the DS26522 dual-port, single-chip transceiver. The DS26522 is composed of two dice, and the JTAG functionality is the same as two separate devices daisy chained together. This application note contains a complete breakdown of the JTAG scan chain and explains how to access all of the scan cells in the boundary.