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參數(shù)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(shù)： | 10/29頁 |
| 文件大?。?/td> | 524K |
| 代理商： | SCANSTA111MT |
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Level 1 Protocol (Addressing Modes)
TABLE 4. SCANSTA111 Address Modes
Address Type
Direct Address
Hex Address
00 to 39,
40 to 7F.
(80 to FF (Note 7))
Binary Address
00000000 to 00111010
01000000 to 01111111
(10000000 to 11111111(Note 7))
00111010
TDO
B
State
Normal IEEE Std. 1149.1
Interrogation Address 3A
Force strong 0’ or weak 1’ as ones-complement
address is shifted out.
Always TRI-STATED
Always TRI-STATED
Always TRI-STATED
Always TRI-STATED
Always TRI-STATED
Broadcast Address
Multi-Cast Group 0
Multi-Cast Group 1
Multi-Cast Group 2
Multi-Cast Group 3
3B
3C
3D
3E
3F
00111011
00111100
00111101
00111110
00111111
Note 7:
Hex addresses 80’ to FF’ are only available when using the eighth address bit in the HDL version of the SCANSTA111. The Silicon part has seven address
lines and will treat the most-significant address bit as a don’t care.
The SCANSTA111 supports single and multiple modes of
addressing a ’STA111. The single mode selects one ’STA111
and is called Direct Addressing. More than one ’STA111
device can be selected via the Broadcast and Multi-Cast
Addressing modes.
DIRECT ADDRESSING:
The ’STA111 enters the
Wait-For-
Address
state when:
1.
its TAP Controller enters the
Test-Logic-Reset
state, or
2.
its instruction register is updated with the
GOTOWAIT
instruction (while either selected or unselected).
Each ’STA111 within a scan network must be statically con-
figured with a unique address via its S
inputs. While the
’STA111 controller is in the
Wait-For-Address
state, data
shifted into bits 6 through 0 of the instruction register is
compared with the address present on the S
inputs in the
Update-IR
state. If the seven (7) LSBs of the instruction
register match the address on the S
(0-6)
inputs, (see
Figure
6
) the ’STA111 becomes selected, and is ready to receive
Level 2 Protocol (i.e., further instructions). When the
’STA111 is selected, its device identification register is in-
serted into the active scan chain.
All ’STA111s whose S
(0-6)
address does not match the in-
struction register address become unselected. They will re-
main unselected until either their TAP Controller enters the
Test-Logic-Reset
state, or their instruction register is up-
dated with the
GOTOWAIT
instruction.
BROADCAST ADDRESSING:
The Broadcast Address allows a tester to simultaneously
select all ’STA111s in a test network. This mode is useful in
testing systems which contain multiple identical boards. To
avoid bus contention between scan-path output drivers on
different boards, each ’STA111’s TDO
buffer is always TRI-
STATEd while in Broadcast mode. In this configuration, the
on-chip Linear Feedback Shift Register (LFSR) can be used
to accumulate a test result signature for each board that can
be read back later by direct-addressing each board’s
’STA111.
MULTICAST ADDRESSING:
As a way to make the broadcast mechanism more selective,
the ’STA111 provides a Multi-cast addressing mode. A
’STA111’s multi-cast group register (MCGR) can be pro-
grammed to assign that ’STA111 to one of four (4) Multi-Cast
groups. When ’STA111s in the
Wait-For-Address
state are
updated with a Multi-Cast address, all ’STA111s whose
MCGR matches the Multi-Cast group will become selected.
As in Broadcast mode, TDO
B
is always TRI-STATEd while in
Multi-cast mode.
10124509
FIGURE 6. Direct Addressing: Device Address Loaded into Instruction Register
S
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相關(guān)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(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SCANSTA111MT/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 |
| 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(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 |
| SCANSTA111MTX/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 |
| SCANSTA111SM | 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 |
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