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| 型号： | SN74LVTH182516 |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | 3.3-V ABT Scan Test Device With 18-Bit Universal Bus Transceivers(3.3V ABT扫描测试装置(18位通用总线收发器)) |
| 中文描述： | 的3.3V ABT生根粉扫描测试设备与18位通用总线收发器（3.3V的ABT生根粉扫描测试装置（18位通用总线收发器）） |
| 文件页数： | 16/36页 |
| 文件大小： | 769K |
| 代理商： | SN74LVTH182516 |
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SN54LVTH18516, SN54LVTH182516, SN74LVTH18516, SN74LVTH182516
3.3-V ABT SCAN TEST DEVICES
WITH 18-BIT UNIVERSAL BUS TRANSCEIVERS
SCBS672B – AUGUST 1996 – REVISED JUNE 1997
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
boundary-control register opcode description
The BCR opcodes are decoded from BCR bits 2–0 as shown in Table 4. The selected test operation is performed
while the RUNT instruction is executed in the Run-Test/Idle state. The following descriptions detail the operation
of each BCR instruction and illustrate the associated PSA and PRPG algorithms.
Table 4. Boundary-Control Register Opcodes
BINARY CODE
BIT 2
→
BIT 0
MSB
→
LSB
X00
DESCRIPTION
Sample inputs/toggle outputs (TOPSIP)
X01
Pseudo-random pattern generation/36-bit mode (PRPG)
X10
Parallel-signature analysis/36-bit mode (PSA)
011
Simultaneous PSA and PRPG/18-bit mode (PSA/PRPG)
111
Simultaneous PSA and binary count up/18-bit mode (PSA/COUNT)
While the control input BSCs (bits 45–36) are not included in the toggle, PSA, PRPG, or COUNT algorithms,
the output-enable BSCs (bits 45–44 of the BSR) control the drive state (active or high impedance) of the selected
device output pins. These BCR instructions are only valid when the device is operating in one direction of data
flow (that is, OEAB
≠
OEBA). Otherwise, the bypass instruction is operated.
sample inputs/toggle outputs (TOPSIP)
Data appearing at the selected device input-mode I/O pins is captured in the shift-register elements of the
associated BSCs on each rising edge of TCK. Data in the shift-register elements of the selected output-mode
BSCs is toggled on each rising edge of TCK, updated in the shadow latches, and applied to the associated
device I/O pins on each falling edge of TCK.
P
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| SN74LVTH182646APM | 功能描述:特定功能逻辑 18bit ABT 3.3V RoHS:否 制造商:Texas Instruments 产品: 系列:SN74ABTH18502A 工作电源电压:5 V 封装 / 箱体:LQFP-64 封装:Tube |
| SN74LVTH182652APM | 功能描述:特定功能逻辑 10-Bit Bus Interface F-F W/3-State Otpt RoHS:否 制造商:Texas Instruments 产品: 系列:SN74ABTH18502A 工作电源电压:5 V 封装 / 箱体:LQFP-64 封装:Tube |
| SN74LVTH18502APM | 功能描述:特定功能逻辑 3.3-V ABT w/18-Bit Univ Bus Transceiver RoHS:否 制造商:Texas Instruments 产品: 系列:SN74ABTH18502A 工作电源电压:5 V 封装 / 箱体:LQFP-64 封装:Tube |
| SN74LVTH18502APMG4 | 功能描述:特定功能逻辑 3.3-V ABT w/18-Bit Univ Bus Transceiver RoHS:否 制造商:Texas Instruments 产品: 系列:SN74ABTH18502A 工作电源电压:5 V 封装 / 箱体:LQFP-64 封装:Tube |
| SN74LVTH18502APMR | 功能描述:特定功能逻辑 10-Bit Bus/MOS Mem Drv RoHS:否 制造商:Texas Instruments 产品: 系列:SN74ABTH18502A 工作电源电压:5 V 封装 / 箱体:LQFP-64 封装:Tube |
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