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參數資料
| 型號： | GS832418B-200I |
| 廠商： | GSI TECHNOLOGY |
| 元件分類： | DRAM |
| 英文描述： | 2M x 18, 1M x 36, 512K x 72 36Mb S/DCD Sync Burst SRAMs |
| 中文描述： | 2M X 18 CACHE SRAM, 7.5 ns, PBGA119 |
| 封裝： | 14 X 22 MM, 1.27 MM PITCH, BGA-119 |
| 文件頁數： | 34/46頁 |
| 文件大小： | 1149K |
| 代理商： | GS832418B-200I |
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Rev: 1.00 10/2001
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
34/46
2001, Giga Semiconductor, Inc.
Preliminary
GS832418(B/C)/GS832436(B/C)/GS832472(C)
Capture-DR state and then is placed between the TDI and TDO pins when the controller is moved to Shift-DR state. SAMPLE-Z,
SAMPLE/PRELOAD and EXTEST instructions can be used to activate the Boundary Scan Register.
JTAG TAP Block Diagram
Identification (ID) Register
The ID Register is a 32-bit register that is loaded with a device and vendor specific 32-bit code when the controller is put in
Capture-DR state with the IDCODE command loaded in the Instruction Register. The code is loaded from a 32-bit on-chip ROM.
It describes various attributes of the RAM as indicated below. The register is then placed between the TDI and TDO pins when the
controller is moved into Shift-DR state. Bit 0 in the register is the LSB and the first to reach TDO when shifting begins.
Tap Controller Instruction Set
Overview
There are two classes of instructions defined in the Standard 1149.1-1990; the standard (Public) instructions, and device specific
(Private) instructions. Some Public instructions are mandatory for 1149.1 compliance. Optional Public instructions must be
ID Register Contents
Die
Revision
Code
Not Used
I/O
Configuration
GSI Technology
JEDEC Vendor
ID Code
P
0
1
1
1
1
1
Bit #
x72
x36
x32
x18
x16
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
X
X
X
X
0
0
0
0
0
0
0
0
0
0
X
X
X
X
0
0
0
0
0
0
0
0
0
0
X
X
X
X
0
0
0
0
0
0
0
0
0
0
X
X
X
X
0
0
0
0
0
0
0
0
0
0
X
X
X
X
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
0
0
1
0
1
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 1 1 0 1 1 0 0 1
0 1 1 0 1 1 0 0 1
0 1 1 0 1 1 0 0 1
0 1 1 0 1 1 0 0 1
0 1 1 0 1 1 0 0 1
Instruction Register
ID Code Register
·
31 30 29
Boundary Scan Register
· · ·
· · ·
n
0
1
2
0
1
2
· · ·
0
1
2
· · ·
0
Bypass Register
TDI
TDO
TMS
TCK
Test Access Port (TAP) Controller
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