The AS91L1006BU is a product of Achronix, and its model is AS91L1006BU. It is a 6-port JTAG gateway that can extend the IEEE1149.1 standard. It allows the IEEE1149.1 interface to be used in a true multi-drop environment without any additional signals.
The AS91L1006BU is a 6‑Port JTAG Gateway that partitions a single JTAG chain into six separate chains, optionally configurable as a single chain. It provides Multi‑Drop addressability via the IEEE1149.1 protocol, enabling true system‑level testing and fault diagnostics without additional signals.
The device is offered in a 100‑pin LQFP or a 100‑pin FPBGA lead‑free package and is a complete second‑source replacement for the Firecron JTSO6BU. It includes a range of registers (IDCODE, USERCODE, AUTOWR, etc.) that allow detailed control of scan‑chain selection, pass‑through mode, and self‑test functions.
| Number of JTAG ports | 6 |
|---|---|
| Package options | 100‑pin LQFP or 100‑pin FPBGA lead‑free |
| Multi‑Drop addressability | Supported via IEEE1149.1 protocol |
| Local scan chains | 6 addressable via IEEE1149.1 |
| AUTOWR register size | 6‑bit |
| IDCODE register size | 32‑bit (optional) |
It supports up to six JTAG ports.
The device is available in a 100‑pin LQFP or a 100‑pin FPBGA lead‑free package.
It compares the scanned address to the slot address presented on its I/O pins; a match selects the device.