EEWORLDEEWORLDEEWORLD

Part Number

Search

AS91L1002E40L100CG

Description
The AS91L1006BU is a one to 6-port JTAG gateway
File Size241KB,28 Pages
ManufacturerETC
Download Datasheet View All

AS91L1002E40L100CG Overview

The AS91L1006BU is a one to 6-port JTAG gateway

July 2004
AS91L1006BU
6-Port JTAG Gateway
Description
The AS91L1006BU is a one to 6-port
JTAG gateway. It partitions a single JTAG chain
into six separate chains. These separate chains
can be optionally configured to operate as a single
chain.
The AS91L1006BU device is used to
provide enhanced capabilities to the standard
IEEE1149.1. It enables the IEEE1149.1 interface
to be used in a true Multi-Drop environment without
any additional signals. This Multi-Drop capability
enables the standard IEEE1149.1 interface to be
used not just for stand alone PCB (Printed Circuit
Board) testing, but also for complete system
testing including all PCBs within a system back
plane environment.
The AS91L1006BU provides the capability
of partitioning the PCB, into multiple smaller
IEEE1149.1 scan chains totally under software
control. Partitioning the IEEE1149.1 chains on the
PCB has several benefits which include easier
fault diagnostics capabilities as a fault on one of
the IEEE1149.1 Local Scan Ports (LSPs) does
not render the PCB untestable, faster flash
programming on the PCBs, and removal of
IEEE1149.1 signal loading issues.
All of the protocols required for
addressing the AS91L1006BU device via the
Multi-Drop capability and the protocols for
configuring which of the six IEEE1149.1 LSPs on
the AS91L1006BU are to be used, is handled via
3
rd
party ATPG tools from vendors like Asset-
Intertech and JTAG Technologies. In a Multi-Drop
environment it is also possible to perform
interconnect tests between multiple PCBs within a
system thus extending the interconnect tests to
the back plane itself.
Key Features
Device Multi-Drop addressable via the IEEE
1149.1 protocol
Support for 6 local scan chains addressable via
the IEEE 1149.1 interface
Support for Pass-Through™
Support for the IEEE 1149.1 USERCODE
instruction
Support for Status instruction enabling non-
intrusive monitoring of the system card
Local Scan Port (LSP) enable signal provides the
ability to use non IEEE 1149.1 compliant devices
that require JTAG enable signal
Provides the ability to initiate Self-Test on a
remote PCB via a standard IEEE 1149.1
command
Support for JTAG Technologies AutoWR™
feature
Pinout and feature set compatible (complete
second source) with the Firecron JTS06BU
device
Available in a 100-pin LQFP or a 100-pin
FPBGA lead free package
Device Block Diagram
P a s s T h r o u g h E n a b le
P r im a r y 1 1 4 9 . 1
J T A G In te rfa c e
LSP1
S ta tu s D a ta
LSP2
U s e rc o d e
D a ta
1 1 4 9 . 1 T A P C o n t r o lle r
and
B o u n d a r y R e g is t e r S e le c t io n L o g ic
D e v ic e
a d d re s s
P a s s T h ro u g h
L o g ic & L o c a l
S c a n P o rt
C o n n e c t io n /
C o n f ig
lo g ic
LSP3
LSP4
D e v ic e
S e le c t io n
L o g ic
L o c a l S c a n P o rt
P a r k /U n -p a rk
S y n c L o g ic
LSP5
LSP6
Figure 1 - AS91L1006BU Device Block Diagram
Alliance Semiconductor
2575 Augustine Drive
Santa Clara, CA 95054
T: 408-855-4900
F: 408-855-4999
www.alsc.com
Design of high-speed serial real-time communication bus based on optical fiber and FPGA
High-speed serial real-time communication is the development direction and research hotspot of CNC control technology. This paper introduces the independently developed high-speed serial real-time com...
eeleader FPGA/CPLD
Design of ESD protection structure for CMOS circuits
ESD (electrostatic discharge) is one of the most serious failure mechanisms in CMOS circuits. In severe cases, it can cause the circuit to burn itself out. This paper discusses the necessity of ESD pr...
fish001 Analogue and Mixed Signal
AD sampling input problem?
I want to design a circuit that can collect ±10V voltage input. The design idea is to convert the ±10V voltage into 0-20V DC, and then attenuate the 0-20V DC to 0-5V and input it to AD for conversion....
bigbat Analog electronics
MSP430 5529 12-bit AD conversion
void ADC_Init(void) { ADC12CTL0 |= ADC12SHT02 + ADC12ON; //ADC10ON=1-->ADC10 turns on ADC12CTL0 |= ADC12REFON + ADC12REF2_5V ; //Select internal reference source 2.5V, turn on reference source ADC12CT...
xcw Microcontroller MCU
TMS320C55x - Instruction encoding and coff object file loading related issues
Hello engineers, I am studying the simulation program of TI's TMS320C55x recently. I have some questions about the distribution of the code segment (i.e. instruction code) after the compiled .out file...
wyj107 Embedded System
Recruiting brushless motor controller hardware development engineer
Headhunting position in [Shanghai] or [Changzhou] [/size] [size=14px]Job responsibilities: [/size][u][size=14px]Main work: Hardware development of brushless [/size][size=14px] motor controller [/size]...
July2018 Recruitment

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 580  1455  1622  2722  2549  12  30  33  55  52 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号