參數(shù)資料
型號： SCANSTA111SM
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 微控制器/微處理器
英文描述： EMITTER IR 850NM 5MM RADIAL
中文描述： SPECIALTY MICROPROCESSOR CIRCUIT, PBGA49
封裝： BGA-49
文件頁數(shù)： 7/29頁
文件大?。?/td> 524K
代理商： SCANSTA111SM
State Machines
(Continued)
The ’STA111 contains three distinct but coupled state-
machines (see
Figure 2
). The first of these is the TAP-control
state-machine, which is used to drive the ’STA111s scan
ports in conformance with the 1149.1 Standard. The second
is the ’STA111-selection state-machine (
Figure 3
). The third
state-machine actually consists of three identical but inde-
pendent state-machines (see
Figure 4
), one per ’STA111
local scan port. Each of these scan port selection state-
machines allows individual local ports to be inserted into and
removed from the ’STA111s overall scan chain.
The ’STA111 selection state-machine performs the address
matching which gives the ’STA111 its multi-drop capability.
That logic supports single-’STA111 access, multi-cast, and
broadcast. The ’STA111-selection state-machine imple-
ments the chip’s Level-1 protocol.
The ’STA111’s scan port-configuration state-machine is used
to control the insertion of local scan ports into the overall
scan chain, or the isolation of local ports from the chain.
From the perspective of a system’s (single) scan controller,
each ’STA111 presents only one scan chain to the master.
The ’STA111 architecture allows one or more of the
’STA111’s local ports to be included in the active scan chain.
Each local port can be parked in one of four stable states
(
Parked-TLR
,
Parked-RTI
,
Parked-Pause-DR
or
Parked-
Pause-IR
), either individually or simultaneously with other
local ports. Parking a chain removes that local chain from the
active scan chain. Conversely, a parked chain can be un-
parked, causing the corresponding local port to be inserted
into the active scan chain.
As shown in
Figure 4
, the ’STA111’s three scan port-
configuration state-machines allow each of the part’s local
ports to occupy a different state at any given time. For
example, some ports may be parked, perhaps in different
states, while other ports participate in scan operations. The
state-diagram shows that some state transitions depend on
the current state of the TAP-control state-machine. As an
example, a local port which is presently in the
Parked-RTI
state does not become unparked (i.e., enter the
Unparked
10124506
FIGURE 3. State Machine for SCANSTA111 Selection Controller
10124507
FIGURE 4. Local SCANSTA111 Port Configuration State Machine
S
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7
相關(guān)PDF資料
PDF描述
SCANSTA111 Enhanced SCAN bridge Multidrop Addressable IEEE 1149.1 (JTAG) Port
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SCANSTA111SM/NOPB 功能描述:接口 - 專用 Enhanced SCAN Bridge Multidrop Port RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
SCANSTA111SMX 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
SCANSTA111SMX/NOPB 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:BGA-59
SCANSTA112 制造商:NSC 制造商全稱:National Semiconductor 功能描述:7-port Multidrop IEEE 1149.1 (JTAG) Multiplexer
SCANSTA112_05 制造商:NSC 制造商全稱:National Semiconductor 功能描述:7-Port Multidrop IEEE 1149.1 (JTAG) Multiplexer
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