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參數資料
| 型號： | SCANSTA111MT |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Enhanced SCAN bridge Multidrop Addressable IEEE 1149.1 (JTAG) Port |
| 中文描述： | SPECIALTY MICROPROCESSOR CIRCUIT, PDSO48 |
| 封裝： | TSSOP-48 |
| 文件頁數： | 7/29頁 |
| 文件大小： | 524K |
| 代理商： | SCANSTA111MT |
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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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相關PDF資料 |
PDF描述 |
|---|---|
| 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 |
| SCANSTA476TSD | Eight Input IEEE 1149.1 Analog Voltage Monitor |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| SCANSTA111MTX/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 |
| SCANSTA111SM | 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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