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參數(shù)資料
型號(hào)： GS8662Q09E-250
廠商： GSI TECHNOLOGY
元件分類(lèi)： DRAM
英文描述： 72Mb SigmaQuad-II Burst of 2 SRAM
中文描述： 8M X 9 STANDARD SRAM, 0.45 ns, PBGA165
封裝： 15 X 17 MM, 1 MM PITCH, FPBGA-165
文件頁(yè)數(shù)： 28/35頁(yè)
文件大小： 993K
代理商： GS8662Q09E-250
Select DR
Capture DR
0
Shift DR
Exit1 DR
Pause DR
Exit2 DR
Update DR
Select IR
Capture IR
0
Shift IR
Exit1 IR
Pause IR
Exit2 IR
Update IR
Test Logic Reset
Run Test Idle
0
1
0
1
1
0
1
1
1
0
0
1
1
0
0
0
0
1
1
0
0
1
1
0
0
0
1
1
1
1
Preliminary
GS8662Q08/09/18/36E-300/250/200/167
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.01 9/2005
28/35
2005, GSI Technology
JTAG Tap Controller State Diagram
Instruction Descriptions
BYPASS
When the BYPASS instruction is loaded in the Instruction Register the Bypass Register is placed between TDI and TDO. This
occurs when the TAP controller is moved to the Shift-DR state. This allows the board level scan path to be shortened to facili-
tate testing of other devices in the scan path.
SAMPLE/PRELOAD
SAMPLE/PRELOAD is a Standard 1149.1 mandatory public instruction. When the SAMPLE / PRELOAD instruction is
loaded in the Instruction Register, moving the TAP controller into the Capture-DR state loads the data in the RAMs input and
I/O buffers into the Boundary Scan Register. Boundary Scan Register locations are not associated with an input or I/O pin, and
are loaded with the default state identified in the Boundary Scan Chain table at the end of this section of the datasheet. Because
the RAM clock is independent from the TAP Clock (TCK) it is possible for the TAP to attempt to capture the I/O ring contents
while the input buffers are in transition (i.e. in a metastable state). Although allowing the TAP to sample metastable inputs will
not harm the device, repeatable results cannot be expected. RAM input signals must be stabilized for long enough to meet the
TAPs input data capture set-up plus hold time (tTS plus tTH). The RAMs clock inputs need not be paused for any other TAP
operation except capturing the I/O ring contents into the Boundary Scan Register. Moving the controller to Shift-DR state then
places the boundary scan register between the TDI and TDO pins.
相關(guān)PDF資料
PDF描述
GS8662Q09E-250I 72Mb SigmaQuad-II Burst of 2 SRAM
GS8662Q09E-300 72Mb SigmaQuad-II Burst of 2 SRAM
GS8662Q09E-300I 72Mb SigmaQuad-II Burst of 2 SRAM
GS8662Q09GE-167 72Mb SigmaQuad-II Burst of 2 SRAM
GS8662Q09GE-167I 72Mb SigmaQuad-II Burst of 2 SRAM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
GS8662Q09E-250I 制造商:GSI 制造商全稱(chēng):GSI Technology 功能描述:72Mb SigmaQuad-II Burst of 2 SRAM
GS8662Q09E-300 制造商:GSI 制造商全稱(chēng):GSI Technology 功能描述:72Mb SigmaQuad-II Burst of 2 SRAM
GS8662Q09E-300I 制造商:GSI 制造商全稱(chēng):GSI Technology 功能描述:72Mb SigmaQuad-II Burst of 2 SRAM
GS8662Q09GE-167 制造商:GSI 制造商全稱(chēng):GSI Technology 功能描述:72Mb SigmaQuad-II Burst of 2 SRAM
GS8662Q09GE-167I 制造商:GSI 制造商全稱(chēng):GSI Technology 功能描述:72Mb SigmaQuad-II Burst of 2 SRAM
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