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參數資料
| 型號： | SCANSTA111 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Enhanced SCAN bridge Multidrop Addressable IEEE 1149.1 (JTAG) Port |
| 中文描述： | 增強掃描橋梁多點尋址的IEEE 1149.1（JTAG接口）端口 |
| 文件頁數： | 1/29頁 |
| 文件大小： | 524K |
| 代理商： | SCANSTA111 |
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SCANSTA111
Enhanced SCAN bridge
Multidrop Addressable IEEE 1149.1 (JTAG) Port
General Description
The SCANSTA111 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 SCANSTA111 supports up to 3 local
IEEE1149.1 scan rings which can be accessed individually
or combined serially. Addressing is accomplished by loading
the instruction register with a value matching that of the Slot
inputs. Backplane and inter-board testing can easily be ac-
complished by parking the local TAP Controllers in one of the
stable TAP Controller states via a Park instruction. The 32-bit
TCK counter enables built in self test operations to be per-
formed on one port while other scan chains are simulta-
neously tested.
Features
n
True IEEE 1149.1 hierarchical and multidrop
addressable capability
n
The 7 slot inputs support up to 121 unique addresses,
an Interrogation Address, Broadcast Address, and 4
Multi-cast Group Addresses (address 000000 is
reserved)
n
3 IEEE 1149.1-compatible configurable local scan ports
n
Mode Register
0
allows local TAPs to be bypassed,
selected for insertion into the scan chain individually, or
serially in groups of two or three
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
LSP ACTIVE outputs provide local port enable signals
for analog busses supporting IEEE 1149.4.
n
General purpose local port passthrough bits are useful
for delivering write pulses for FPGA programming or
monitoring device status.
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
0-2
have a TRI-STATE notification output)
n
3.0-3.6V V
CC
Supply Operation
n
Power-off high impedance inputs and outputs
n
Supports live insertion/withdrawal
Connection Diagrams
10124502
10124516
April 2004
S
2004 National Semiconductor Corporation
DS101245
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| SCANSTA111MT | Enhanced SCAN bridge Multidrop Addressable IEEE 1149.1 (JTAG) Port |
| SCANSTA112 | 7-port Multidrop IEEE 1149.1 (JTAG) Multiplexer |
| SCANSTA112SM | 7-port Multidrop IEEE 1149.1 (JTAG) Multiplexer |
| SCANSTA112VS | 7-port Multidrop IEEE 1149.1 (JTAG) Multiplexer |
| SCANSTA476 | Eight Input IEEE 1149.1 Analog Voltage Monitor |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SCANSTA111_05 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Enhanced SCAN bridge Multidrop Addressable IEEE 1149.1 (JTAG) Port |
| SCANSTA111MT | 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| SCANSTA111MT/NOPB | 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| SCANSTA111MT/NOPB | 制造商:Texas Instruments 功能描述:, Termination:Solder, Package/Case:48-TS |
| SCANSTA111MTX | 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
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