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SCANSTA112VS

更新时间： 2024-02-15 14:52:16

品牌	Logo	应用领域
美国国家半导体 - NSC		复用器微控制器和处理器外围集成电路 uCs集成电路 uPs集成电路
页数	文件大小	规格书
15页	299K
描述
7-port Multidrop IEEE 1149.1 (JTAG) Multiplexer

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SCANSTA112VS 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	QFP
包装说明：	TFQFP, TQFP100,.63SQ	针数：	100
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	1.13
外部数据总线宽度：		JESD-30 代码：	S-PQFP-G100
JESD-609代码：	e4	长度：	14 mm
湿度敏感等级：	3	端子数量：	100
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	TFQFP
封装等效代码：	TQFP100,.63SQ	封装形状：	SQUARE
封装形式：	FLATPACK, THIN PROFILE, FINE PITCH	峰值回流温度（摄氏度）：	260
电源：	3.3 V	认证状态：	Not Qualified
座面最大高度：	1.2 mm	子类别：	Other Microprocessor ICs
最大供电电压：	3.6 V	最小供电电压：	3 V
标称供电电压：	3.3 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子面层：	Nickel/Palladium/Gold (Ni/Pd/Au)	端子形式：	GULL WING
端子节距：	0.5 mm	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	14 mm
uPs/uCs/外围集成电路类型：	MICROPROCESSOR CIRCUIT	Base Number Matches：	1

SCANSTA112VS 数据手册

May 2004

SCANSTA112

7-port Multidrop IEEE 1149.1 (JTAG) Multiplexer

n 7 IEEE 1149.1-compatible configurable local scan ports

n Bi-directional Backplane and LSP₀ports are

interchangeable slave ports

n Capable of ignoring TRST of the backplane port when it

becomes the slave.

n Stitcher Mode bypasses level 1 and 2 protocols

n Mode Register₀allows local TAPs to be bypassed,

selected for insertion into the scan chain individually, or

serially in groups of two or three

General Description

The SCANSTA112 extends the IEEE Std. 1149.1 test bus

into a multidrop test bus environment. The advantage of a

multidrop approach over a single serial scan chain is im-

proved test throughput and the ability to remove a board

from the system and retain test access to the remaining

modules. Each SCANSTA112 supports up to

IEEE1149.1 scan chains which can be accessed individually

or combined serially.

7 local

n Transparent Mode can be enabled with a single

instruction to conveniently buffer the backplane IEEE

1149.1 pins to those on a single local scan port

n General purpose local port passthrough bits are useful

for delivering write pulses for Flash programming or

monitoring device status.

Addressing is accomplished by loading the instruction regis-

ter with a value matching that of the Slot inputs. Backplane

and inter-board testing can easily be accomplished by park-

ing the local TAP Controllers in one of the stable TAP Con-

troller states via a Park instruction. The 32-bit TCK counter

enables built in self test operations to be performed on one

port while other scan chains are simultaneously tested.

n Known Power-up state

n TRST on all local scan ports

n 32-bit TCK counter

n 16-bit LFSR Signature Compactor

n Local TAPs can become TRI-STATE via the OE input to

allow an alternate test master to take control of the local

TAPs (LSP_0-3have a TRI-STATE notification output)

n 3.0-3.6V V_CCSupply Operation

The STA112 has a unique feature in that the backplane port

and the LSP0 port are bidirectional. They can be configured

to alternatively act as the master or slave port so an alternate

test master can take control of the entire scan chain network

from the LSP0 port while the backplane port becomes a

slave.

Features

n Supports live insertion/withdrawal

n True IEEE 1149.1 hierarchical and multidrop

addressable capability

n The 8 address inputs support up to 249 unique slot

addresses, an Interrogation Address, Broadcast

Address, and 4 Multi-cast Group Addresses (address

000000 is reserved)

20051250

FIGURE 1. Typical use of SCANSTA112 for board-level management of multiple scan chains.

DS200512

www.national.com

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与SCANSTA112VS相关器件

型号	品牌	描述	获取价格	数据表
SCANSTA112VS/NOPB	TI	7 端口多点 IEEE 1149.1 (JTAG) 多路复用器 \| NEZ \| 100 \|	获取价格
SCANSTA112VSX	NSC	IC SPECIALTY MICROPROCESSOR CIRCUIT, PQFP100, TQFP-100, Microprocessor IC:Other	获取价格
SCANSTA112VSX/NOPB	NSC	IC SPECIALTY MICROPROCESSOR CIRCUIT, PQFP100, TQFP-100, Microprocessor IC:Other	获取价格
SCANSTA112VSX/NOPB	TI	7 端口多点 IEEE 1149.1 (JTAG) 多路复用器 \| NEZ \| 100 \|	获取价格
SCANSTA476	NSC	Eight Input IEEE 1149.1 Analog Voltage Monitor	获取价格
SCANSTA476	TI	8 输入 IEEE 1149.1 模拟电压监控器	获取价格

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