gvt71256d36 ETC-unknow, gvt71256d36 Datasheet - Page 20

• Manufacturer Part Number: gvt71256d36
• Description: 256k 36/512k Synchronous Sram
• Manufacturer: ETC-unknow

IDENTIFICATION REGISTER DEFINITION S
SCAN REGISTER SIZE S
INSTRUCTION CODE S
May 18, 199 9
Rev. 5/99
GALVANTECH
INSTRUCTION FIELD
REVISION NUMBER
(31:28)
DEVICE DEPTH
(27:23)
DEVICE WIDTH
(22:18)
RESERVED
(17:12)
GALVANTECH JEDEC
ID CODE (11:1)
ID Register Presence
Indicator (0)
REGISTER NAM E
Instruction
Bypass
ID
Boundary Scan
Instructio n
EXTEST
IDCODE
SAMPLE-Z
RESERVED
SAMPLE/PRE-
LOAD
RESERVED
RESERVED
BYPASS
Code Descriptio n
000
001
010
011
100
101
110
111
BIT SIZE (x36 )
00011100100
256K x 36
Captures I/O ring contents. Places the boundary scan register
between TDI and TDO. Forces all device outputs to High-Z state.
This instruction is not IEEE 1149.1-compliant.
Preloads ID register with vendor ID code and places it between TDI
and TDO. This instruction does not affect device operations.
Captures I/O ring contents. Places the boundary scan register
between TDI and TDO. Forces all device outputs to High-Z state.
Do not use these instructions; they are reserved for future use.
Captures I/O ring contents. Places the boundary scan register
between TDI and TDO. This instruction does not affect device opera-
tions. This instruction does not implement IEEE 1149.1 PRELOAD
function and is therefore not 1149.1-compliant.
Do not use these instructions; they are reserved for future use.
Do not use these instructions; they are reserved for future use.
Places the bypass register between TDI and TDO. This instruction
does not affect device operations.
XXXXXX
32
70
00110
00100
XXXX
3
1
1
, INC.
BIT SIZE (x18 )
32
51
3
1
00011100100
512K x 18
XXXXXX
256K X 36/512K X 18 SYNCHRONOUS SRAM
00111
00011
XXXX
1
20
DESCRIPTION
Reserved for revision number .
Defines depth of 256K or
512K words.
Defines width of x36 or x18
bits.
Reserved for future use.
Allows unique identification of
DEVICE vendor.
Indicates the presence of an
ID register.
GVT71256D36/GVT71512D18
Galvantech, Inc. reserves the right to change products or specifications without notice
.