CY7C1470V25_12 CYPRESS [Cypress Semiconductor], CY7C1470V25_12 Datasheet - Page 21

• Manufacturer Part Number: CY7C1470V25_12
• Manufacturer: CYPRESS [Cypress Semiconductor]

Identification Register Definitions
Scan Register Sizes
Instruction Codes
Document Number: 38-05290 Rev. *O
Revision number (31:29)
Device depth (28:24)
Architecture/memory type(23:18)
Bus width/density(17:12)
Cypress JEDEC ID code (11:1)
ID register presence indicator (0)
Instruction
Bypass
ID
Boundary scan order – 165-ball FBGA package
Boundary scan order – 209-ball BGA package)
EXTEST
IDCODE
SAMPLE Z
RESERVED
SAMPLE/PRELOAD
RESERVED
RESERVED
BYPASS
Instruction
Instruction Field
Register Name
Code
000
001
010
011
100
101
110
111
Captures I/O ring contents. Places the boundary scan register between TDI and TDO. Forces
all SRAM outputs to high Z state. This instruction is not 1149.1-compliant.
Loads the ID register with the vendor ID code and places the register between TDI and TDO.
This operation does not affect SRAM operations.
Captures I/O ring contents. Places the boundary scan register between TDI and TDO. Forces
all SRAM output drivers to a high Z state.
Do Not Use: This instruction is reserved for future use.
Captures I/O ring contents. Places the boundary scan register between TDI and TDO. Does
not affect SRAM operation. This instruction does not implement 1149.1 preload function and
is therefore not 1149.1-compliant.
Do Not Use: This instruction is reserved for future use.
Do Not Use: This instruction is reserved for future use.
Places the bypass register between TDI and TDO. This operation does not affect SRAM
operations.
CY7C1470V25
00000110100
(2 M × 36)
001000
100100
01011
000
1
CY7C1474V25
00000110100
(1 M × 72)
001000
110100
Bit Size (× 36)
01011
000
1
Description
32
71
3
1
–
Describes the version number
Reserved for internal use
Defines memory type and architecture
Defines width and density
Allows unique identification of SRAM
vendor
Indicates the presence of an ID register
Description
Bit Size (× 72)
CY7C1470V25
CY7C1472V25
CY7C1474V25
110
32
3
1
–
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