參數(shù)資料
型號(hào)： PI7C7300ANA
廠商： Pericom Semiconductor Corp.
英文描述： 3-PORT PCI-to-PCI BRIDGE
中文描述： 3端口PCI至PCI橋
文件頁(yè)數(shù)： 95/109頁(yè)
文件大小： 779K
代理商： PI7C7300ANA
PI7C7300A
3-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
Page 95 OF 109
09/25/03 Revision 1.09
16.1
BOUNDARY SCAN ARCHITECTURE
Boundary-scan test logic consists of a boundary-scan register and support logic. These
are accessed through a Test Access Port (TAP). The TAP provides a simple serial
interface that allows all processor signal pins to be driven and/or sampled, thereby
providing direct control and monitoring of processor pins at the system level.
This mode of operation is valuable for design debugging and fault diagnosis since it
permits examination of connections not normally accessible to the test system. The
following subsections describe the boundary-scan test logic elements: TAP pins,
instruction register, test data registers and TAP controller.
Error! Reference source not
found.
illustrates how these pieces fit together to form the JTAG unit.
Figure 16-1 TEST ACCESS PORT BLOCK DIAGRAM
16.1.1
TAP PINS
The PI7C7300A’s TAP pins form a serial port composed of four input connections
(TMS, TCK, TRST# and TDI) and one output connection (TDO). These pins are
described in Table 16-1. The TAP pins provide access to the instruction register and the
test data registers.
16.1.2
INSTRUCTION REGISTER
The Instruction Register (IR) holds instruction codes. These codes are shifted in through
the Test Data Input (TDI) pin. The instruction codes are used to select the specific test
operation to be performed and the test data register to be accessed.
The instruction register is a parallel-loadable, master/slave-configured 4-bit wide, serial-
shift register with latched outputs. Data is shifted into and out of the IR serially through
the TDI pin clocked by the rising edge of TCK. The shifted-in instruction becomes active
upon latching from the master stage to the slave stage. At that time the IR outputs along
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PI7C7300ANAE 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI 3 Port PCI Bridge RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
PI7C7300ANA-E 制造商:Pericom Semiconductor Corporation 功能描述:PCI-to-PCI Bridge 272-Pin BGA 制造商:Pericom Semiconductor Corporation 功能描述:PCI to PCI Bridge 272-Pin BGA
PI7C7300DNAE 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI PCI -to -PCI Bridge 3 Port RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray
PI7C7300EVB 功能描述:界面開(kāi)發(fā)工具 3 Port PCI Bridge Eval Brd RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V
PI7C8140A 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:2 PORT PCI TO PCI BRIDGE PLX PCI 6140 COMPARISON
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