參數(shù)資料
型號: GS882Z18AD-133
廠商: GSI TECHNOLOGY
元件分類: DRAM
英文描述: 9Mb Pipelined and Flow Through Synchronous NBT SRAM
中文描述: 512K X 18 ZBT SRAM, 8.5 ns, PBGA165
封裝: 13 X 15 MM, 1 MM PITCH, FPBGA-165
文件頁數(shù): 24/35頁
文件大?。?/td> 617K
代理商: GS882Z18AD-133
GS882Z18/36AB/D-250/225/200/166/150/133
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.04 11/2004
24/35
2001, GSI Technology
When the TAP controller is placed in Capture-IR state the two least significant bits of the instruction register are loaded with 01.
When the controller is moved to the Shift-IR state the Instruction Register is placed between TDI and TDO. In this state the desired
instruction is serially loaded through the TDI input (while the previous contents are shifted out at TDO). For all instructions, the
TAP executes newly loaded instructions only when the controller is moved to Update-IR state. The TAP instruction set for this
device is listed in the following table.
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
Select DR
Capture DR
0
Shift DR
Exit1 DR
Pause DR
Exit2 DR
Update DR
1
Select IR
Capture IR
0
Shift IR
Exit1 IR
Pause IR
Exit2 IR
Update IR
1
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
0
0
0
1
1
1
1
相關(guān)PDF資料
PDF描述
GS882Z18AD-133I 9Mb Pipelined and Flow Through Synchronous NBT SRAM
GS882Z18AD-150 9Mb Pipelined and Flow Through Synchronous NBT SRAM
GS882Z18AD-150I 9Mb Pipelined and Flow Through Synchronous NBT SRAM
GS882Z18AD-166 9Mb Pipelined and Flow Through Synchronous NBT SRAM
GS882Z18AD-166I 9Mb Pipelined and Flow Through Synchronous NBT SRAM
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