参数资料
型号: GS8644Z18GE-225T
厂商: GSI TECHNOLOGY
元件分类: SRAM
英文描述: 4M X 18 ZBT SRAM, 6.5 ns, PBGA165
封装: 17 X 15 MM, 1 MM PITCH, ROHS COMPLIANT, FPBGA-165
文件页数: 14/31页
文件大小: 1172K
代理商: GS8644Z18GE-225T
Instruction Register
ID Code Register
Boundary Scan Register
0
1
2
0
31 30 29
1
2
0
Bypass Register
TDI
TDO
TMS
TCK
Test Access Port (TAP) Controller
M*
1
0
Control Signals
* For the value of M, see the BSDL file, which is available at by contacting us at apps@gsitechnology.com.
GS8644Z18E/GS8644Z36E
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Rev: 1.05b 5/2010
21/31
2003, GSI Technology
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.
ID Register Contents
Not Used
GSI Technology
JEDEC Vendor
ID Code
Presence
Register
Bit # 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
0
X X X X X X X X X X X X X X X X X X X X 0
0 0 1 1 0 1 1 0 0 1
1
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