參數(shù)資料
型號： DS26900LN+
廠商： Maxim Integrated Products
文件頁數(shù)： 32/49頁
文件大?。?/td> 0K
描述： IC JTAG MUX/SWITCH 144-LQFP
標準包裝： 90
系列： *
功能： *
電壓電源： 單電源
電壓 - 電源，單路/雙路(±)： 3.14 V ~ 3.47 V
電流 - 電源： *
工作溫度： *
安裝類型： 表面貼裝
封裝/外殼： 144-LQFP
供應(yīng)商設(shè)備封裝： 144-LQFP（20x20）
包裝： 托盤
__________________________________________________________________________________________DS26900
38
9. Periphery JTAG
9.1
Periphery JTAG Description
The DS26900 contains traditional boundary scan circuitry at the periphery of the package for board manufacturing
tests. This periphery boundary scan circuitry is independent and has priority over the operation of the master/slave
multiplexer. It contains a separate TAP controller with a 3-bit wide instruction code register. Signals associated with
the periphery boundary scan circuitry are
PTRST, PTMS, PTCK, PTDI, and PTDO.
The DS26900 supports the standard instruction codes SAMPLE/PRELOAD, BYPASS, and EXTEST. Optional
public instructions included are HIGHZ, CLAMP and IDCODE. See Figure 9-1 for a block diagram. The DS26900
contains the following items, which meet the requirements set by the IEEE 1149.1 Standard Test Access Port and
Boundary Scan Architecture:
Test Access Port (TAP)
TAP Controller
Instruction Register
Bypass Register
Boundary Scan Register
Device Identification Register
Details on the Boundary Scan Architecture and the Test Access Port can be found in IEEE 1149.1-2001,
IEEE 1149.1-1990, IEEE 1149.1a-1993, and IEEE 1149.1b-1994.
Figure 9-1. Periphery JTAG Block Diagram
BOUNDARY
SCAN REGISTER
IDENTIFICATION
REGISTER
BYPASS
REGISTER
INSTRUCTION
REGISTER
TEST ACCESS PORT
CONTROLLER
MUX
SELECT
TRI-STATE
PTDI
10k
PTMS
10k
PTCLK
PTRST
10k
PTDO
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS26900LN+ 功能描述:多路器開關(guān) IC JTAG MUX RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16
DS26900N+ 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:JTAG Multiplexer/Switch
DS26C31 制造商:NSC 制造商全稱:National Semiconductor 功能描述:CMOS QUAD TRI-STATE DIFFERENTIAL LINE DRIVER
DS26C31 DIE 制造商:Texas Instruments 功能描述:
DS26C31_BBA3026X WAF 制造商:Texas Instruments 功能描述:
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