参数资料
型号: IDT70T631S
厂商: Integrated Device Technology, Inc.
英文描述: 122 x 32 pixel format, Compact LCD size
中文描述: 高速2.5V的512/256K与3.3V 5011 2.5V的接口× 18 ASYNCHRONO美国双端口静态RAM
文件页数: 26/27页
文件大小: 342K
代理商: IDT70T631S
IDT70T633/1S
High-Speed 2.5V 512/256K x 18 Asynchronous Dual-Port Static RAM Industrial and Commercial Temperature Ranges
Identification Register Definitions
Instruction Field
Value
Preliminary
26
Description
Revision Number (31:28)
0x0
Reserved for version number
IDT Device ID (27:12)
0x33B
(1)
Defines IDT part number 70T633
IDT JEDEC ID (11:1)
0x33
Allows unique identification of device vendor as IDT
ID Register Indicator Bit (Bit 0)
1
Indicates the presence of an ID register
5670 tbl 21
System Interface Parameters
Instruction
Code
Description
EXTEST
0000
Forces contents of the boundary scan cells onto the device outputs
(1)
.
Places the boundary scan register (BSR) between TDI and TDO.
BYPASS
1111
Places the bypass register (BYR) between TDI and TDO.
IDCODE
0010
Loads the ID register (IDR) with the vendor ID code and places the
register between TDI and TDO.
HIGHZ
0100
Places the bypass register (BYR) between TDI and TDO. Forces all
device output drivers to a High-Z state.
CLAMP
0011
Uses BYR. Forces contents of the boundary scan cells onto the device
outputs. Places the bypass register (BYR) between TDI and TDO.
SAMPLE/PRELOAD
0001
Places the boundary scan register (BSR) between TDI and TDO.
SAMPLE allows data from device inputs
(2)
and outputs
(1)
to be captured
in the boundary scan cells and shifted serially through TDO. PRELOAD
allows data to be input serially into the boundary scan cells via the TDI.
RESERVED
All other codes
Several combinations are reserved. Do not use codes other than those
identified above.
5670 tbl 23
NOTES:
1. Device outputs = All device outputs except TDO.
2. Device inputs = All device inputs except TDI, TMS, and
TRST
.
3. The Boundary Scan Descriptive Language (BSDL) file for this device is available on the IDT website (www.idt.com), or by contacting your local
IDT sales representative.
Scan Register Sizes
Register Name
Bit Size
Instruction (IR)
4
Bypass (BYR)
1
Identification (IDR)
32
Boundary Scan (BSR)
Note (3)
5670 tbl 22
NOTE:
1. Device ID for IDT70T631 is 0x33C.
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