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參數(shù)資料
| 型號： | SCANPSC110 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | SCAN Bridge Hierarchical and Multidrop Addressable JTAG Port (IEEE1149.1 System Test Support) |
| 中文描述： | 掃描橋?qū)哟魏投帱c尋址JTAG端口（IEEE1149.1系統(tǒng)測試支援） |
| 文件頁數(shù)： | 11/29頁 |
| 文件大?。?/td> | 459K |
| 代理商： | SCANPSC110 |
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Level 1 Protocol
(Continued)
Level 2 Protocol
Once the SCANPSC110F Bridge has been successfully ad-
dressed and selected, its internal registers may be accessed
via Level-2 Protocol. Level-2 Protocol is compliant to IEEE
Std. 1149.1 TAP protocol with one exception: if the
’PSC110F is selected via the Broadcast or Multi-Cast ad-
dress, TDO
will always be TRI-STATED. (The TDO
buffer
must be implemented this way to prevent bus contention.)
Upon being selected, (i.e., the ’PSC110F Selection controller
transitions from the Wait-For-Address state to one of the Se-
lected states), each of the local scan ports (LSP
, LSP
2
,
LSP
) remains parked in one of the following four TAP Con-
troller states: Test-Logic-Reset, Run-Test/Idle, Pause-DR or
Pause-IR and the active scan chain will consist of: TDI
B
through the instruction register (or the IDCODE register) and
out through TDO
B
.
TDI
B
→
Instruction Register
→
TDO
B
The UNPARK instruction (described later) is used to insert
one or more local scan ports into the active scan chain.
Table 4 describes which local ports are inserted into the
chain, and in what order.
LEVEL 2 INSTRUCTION TYPES
There are two types of instructions (reference Table 5):
DS100327-8
FIGURE 7. Broadcast Addressing: Address Loaded into Instruction Register
DS100327-9
FIGURE 8. Multi-Cast Addressing: Address Loaded into Instruction Register
S
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相關(guān)PDF資料 |
PDF描述 |
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| SCANPSC110FDMQB | SCAN Bridge Hierarchical and Multidrop Addressable JTAG Port (IEEE1149.1 System Test Support) |
| SCANPSC110FFMQB | SCAN Bridge Hierarchical and Multidrop Addressable JTAG Port (IEEE1149.1 System Test Support) |
| SCANPSC110FLMQB | SCAN Bridge Hierarchical and Multidrop Addressable JTAG Port (IEEE1149.1 System Test Support) |
| SCANSTA101 | RES 30K OHM 1/16W 0.1% 0402 SMD |
| SCANSTA111SM | EMITTER IR 850NM 5MM RADIAL |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SCANPSC110_ZFC3026B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| SCANPSC110F | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SCAN Bridge Hierarchical and Multidrop Addressable JTAG Port (IEEE1149.1 System Test Support) |
| SCANPSC110FDMQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SCAN Bridge Hierarchical and Multidrop Addressable JTAG Port (IEEE1149.1 System Test Support) |
| SCANPSC110FDMQB WAF | 制造商:Texas Instruments 功能描述: |
| SCANPSC110FDMQB WAF | 制造商:Texas Instruments 功能描述: |
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