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參數(shù)資料
| 型號： | PI7C7300 |
| 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 |
| 文件頁數(shù)： | 96/109頁 |
| 文件大?。?/td> | 779K |
| 代理商： | PI7C7300 |
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PI7C7300A
3-PORT PCI-TO-PCI BRIDGE
ADVANCE INFORMATION
Page 96 OF 109
09/25/03 Revision 1.09
with the TAP finite state machine outputs are decoded to select and control the test data
register selected by that instruction. Upon latching, all actions caused by any previous
instructions terminate.
The instruction determines the test to be performed, the test data register to be accessed,
or both. The IR is two bits wide. When the IR is selected, the most significant bit is
connected to TDI, and the least significant bit is connected to TDO. The value presented
on the TDI pin is shifted into the IR on each rising edge of TCK. The TAP controller
captures fixed parallel data (1101 binary). When a new instruction is shifted in through
TDI, the value 1101(binary) is always shifted out through TDO, least significant bit first.
This helps identify instructions in a long chain of serial data from several devices.
Upon activation of the TRST# reset pin, the latched instruction asynchronously changes
to the id code instruction. When the TAP controller moves into the test state other than
by reset activation, the opcode changes as TDI shifts, and becomes active on the falling
edge of TCK.
16.2
BOUNDARY-SCAN INSTRUCTION SET
The PI7C7300A supports three mandatory boundary-scan instructions (bypass,
sample/preload and extest). The table shown below lists the PI7C7300A’s boundary-scan
instruction codes. The “reserved” code should not be used.
Instruction Code
(binary)
0000
EXTEST
0001
SAMPLE/PRELOAD
Instruction Name
Instruction Code
(binary)
0101
1111
Instruction Name
Reserved
Bypass
Table 16-1 TAP PINS
Instruction
Requisite
Extest
IEEE 1149.1
Required
/
Opcode (binary)
Description
0000
Extest initiates testing of external circuitry, typically board-level
interconnects and off chip circuitry. Extest connects the
boundary-scan register between TDI and TDO. When Extest is
selected, all output signal pin values are driven by values shifted
into the boundary-scan register and may change only of the
falling edge of TCK. Also, when extest is selected, all system
input pin states must be loaded into the boundary-scan register on
the rising-edge of TCK.
Sample/preload performs two functions:
1.
A snapshot of the sample instruction is captured on the rising
edge of TCK without interfering with normal operation. The
instruction causes boundary-scan register cells associated with
outputs to sample the value being driven.
2.
On the falling edge of TCK, the data held in the boundary-scan
cells is transferred to the slave register cells. Typically, the
slave latched data is applied to the system outputs via the
extest instruction.
Reserved
Sample/preload
IEEE 1149.1
Required
0001
Idcode
IEEE 1149.1
Required
Bypass
IEEE 1149.1
Required
0101
1111
Bypass instruction selects the one-bit bypass register between
TDI and TDO pins. 0 (binary) is the only instruction that
accesses the bypass register. While this instruction is in effect,
all other test data registers have no effect on system operation.
Test data registers with both test and system functionality
perform their system functions when this instruction is selected.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PI7C7300A | 3-PORT PCI-to-PCI BRIDGE |
| PI7C7300ANA | 3-PORT PCI-to-PCI BRIDGE |
| PI7C8140A | 2 PORT PCI TO PCI BRIDGE PLX PCI 6140 COMPARISON |
| PI7C8148B | 2-PORT PCI-to-PCI BRIDGE PLX PC16152 COMPARISON |
| PI7C8150B-33 | PCI Bridge | Asynchronous 2-Port PCI Bridge |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PI7C7300A | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:3-PORT PCI-to-PCI BRIDGE |
| PI7C7300AEVB-3 | 功能描述:界面開發(fā)工具 3 Port PCI Bridge Eval Brd RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
| PI7C7300ANA | 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 |
| PI7C7300ANAE | 功能描述:外圍驅(qū)動器與原件 - 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 |
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