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| 型号： | LXT384BE |
| 元件分类： | 通信、网络模块及开发工具 |
| 英文描述： | Telecomm/Datacomm |
| 中文描述： | 电信/数据通信 |
| 文件页数： | 46/80页 |
| 文件大小： | 1112K |
| 代理商： | LXT384BE |
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LXT384
—
Octal T1/E1/J1 Transceiver
46
Datasheet
4.3
TAP Controller
The TAP controller is a 16 state synchronous state machine controlled by the TMS input and
clocked by TCK (see
Figure 16
).The TAP controls whether the LXT384 is in reset mode, receiving
an instruction, receiving data, transmitting data or in an idle state.
Table 30
describes in detail each
of the states represented in
Figure 16
.
Figure 15. JTAG Architecture
MUX
TDO
TAP
Controller
TCK
TMS
TRST
TDI
Boundry Scan Data Register
BSR
Analog Port Scan Register
ASR
Device Identification Register
IDR
Bypass Register
BYR
Instruction Register
IR
Table 30. TAP State Description (Sheet 1 of 2)
State
Description
Test Logic Reset
In this state the test logic is disabled. The device is set to normal operation mode. While in
this state, the instruction register is set to the ICODE instruction.
Run -Test / Idle
The TAP controller stays in this state as long as TMS is Low. Used to perform tests.
Capture - DR
The Boundary Scan Data Register (BSR) is loaded with input pin data.
Shift - DR
Shifts the selected test data registers by one stage tword its serial output.
Update - DR
Data is latched into the parallel output of the BSR when selected.
Capture - IR
Used to load the instruction register with a fixed instruction.
Shift - IR
Shifts the instruction register by one stage.
相关PDF资料 |
PDF描述 |
|---|---|
| LXT384LE | Telecomm/Datacomm |
| LXT386BE | PCM TRANSCEIVER|QUAD|CEPT PCM-30/E-1|CMOS|BGA|160PIN|PLASTIC |
| LXT386LE | PCM TRANSCEIVER|QUAD|CEPT PCM-30/E-1|CMOS|QFP|100PIN|PLASTIC |
| LXT388LE | PCM TRANSCEIVER|DUAL|CEPT PCM-30/E-1|CMOS|QFP|100PIN|PLASTIC |
| LXT400JE | Hermetically Sealed, 3.3V, High Speed, High CMR, Logic Gate Optocoupler |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LXT384LE | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecomm/Datacomm |
| LXT386 | 制造商:INTEL 制造商全称:Intel Corporation 功能描述:QUAD T1/E1/J1 Transceiver |
| LXT386BE | 制造商:未知厂家 制造商全称:未知厂家 功能描述:PCM TRANSCEIVER|QUAD|CEPT PCM-30/E-1|CMOS|BGA|160PIN|PLASTIC |
| LXT386LE | 制造商:LEVEL1 功能描述: |
| LXT388LE | 制造商:未知厂家 制造商全称:未知厂家 功能描述:PCM TRANSCEIVER|DUAL|CEPT PCM-30/E-1|CMOS|QFP|100PIN|PLASTIC |
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