IDT72T72115 Integrated Device Technology, IDT72T72115 Datasheet - Page 29

• Manufacturer Part Number: IDT72T72115
• Description: 128k X 72 Terasync Fifo, 2.5v - Best Value!
• Manufacturer: Integrated Device Technology

JTAG INTERFACE
support the JTAG boundary scan interface. The IDT72T7285/72T7295/
72T72105/72T72115 incorporates the necessary tap controller and modified
pad cells to implement the JTAG facility.
program files for these devices.
TEST ACCESS PORT (TAP)
internal of the processor. It consists of four input ports (TCLK, TMS, TDI, TRST)
and one output port (TDO).
IDT72T7285/72T7295/72T72105/72T72115 2.5V TeraSync™ ™ ™ ™ ™ 72-BIT FIFO
16,384 x 72, 32,768 x 72, 65,536 x 72, 131,072 x 72
Five additional pins (TDI, TDO, TMS, TCK and TRST) are provided to
Note that IDT provides appropriate Boundary Scan Description Language
The Tap interface is a general-purpose port that provides access to the
TDO
TDI
TMS
TCLK
TRST
T
A
P
Cont-
roller
TAP
clkDR, ShiftDR
Figure 7. Boundary Scan Architecture
clklR, ShiftlR
UpdatelR
UpdateDR
Instruction Register
Control Signals
29
complete description refer to the IEEE Standard Test Access Port Specification
(IEEE Std. 1149.1-1990).
THE TAP CONTROLLER
TMS and TCLK signals to generate clock and control signals to the Instruction
and Data Registers for capture and update of data.
DeviceID Reg.
Boundary Scan Reg.
Bypass Reg.
The Standard JTAG interface consists of four basic elements:
•
•
•
•
The following sections provide a brief description of each element. For a
The Figure below shows the standard Boundary-Scan Architecture
The Tap controller is a synchronous finite state machine that responds to
Test Access Port (TAP)
TAP controller
Instruction Register (IR)
Data Register Port (DR)
Instruction Decode
Mux
5994 drw12
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES