Key facts
- Model
- AS91L1006BU
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-05-04
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Alliance Semiconductor AS91L1006BU 6-Port JTAG Gateway Datasheet
The AS91L1006BU is a one‑to‑6‑port JTAG gateway that partitions a single IEEE 1149.1 chain into up to six independent local scan ports (LSPs). It enables multi‑drop testing of back‑plane systems without additional signals, allowing fault isolation, faster flash programming, and reduced signal loading.
The device includes a 16‑state TAP controller, address selection logic, and several configurable registers (e.g., MCGR, AUTOWR, MODE_SELECT) that control scan‑chain routing, pass‑through mode, and asynchronous reset testing. It is offered in 100‑pin LQFP or FPBGA lead‑free packages and serves as a second‑source replacement for the Firecron JTSO6BU.
Alliance Semiconductor AS91L1006BU specifications
| Number of JTAG ports | 6 |
|---|---|
| Package options | 100‑pin LQFP or 100‑pin FPBGA lead‑free |
| AUTOWR register width | 6‑bit |
Source: Alliance Semiconductor AS91L1006BU 6-Port JTAG Gateway Datasheet
All Alliance Semiconductor AS91L1006BU documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
How many local scan chains can the AS91L1006BU support?
It supports six local scan chains addressable via the IEEE 1149.1 interface.
From: Alliance Semiconductor AS91L1006BU 6-Port JTAG Gateway Datasheet
What register controls the AutoWR feature?
The AUTOWR register, a 6‑bit register, controls the pass‑through of the AutoWR signal to any LSP.
From: Alliance Semiconductor AS91L1006BU 6-Port JTAG Gateway Datasheet
How many JTAG ports does the AS91L1006BU support?
It supports up to six JTAG ports.
What package types are available for the AS91L1006BU?
The device is available in a 100‑pin LQFP or a 100‑pin FPBGA lead‑free package.