IDT72T72115 Integrated Device Technology, IDT72T72115 Datasheet - Page 4

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IDT72T72115

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

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DESCRIPTION (CONTINUED)
shown in Table 1.
useful when data is written into the FIFO in long word format (x36/x18) and read
out of the FIFO in small word (x18/x9) format. If Big-Endian mode is selected,
then the most significant byte (word) of the long word written into the FIFO will
be read out of the FIFO first, followed by the least significant byte. If Little-Endian
format is selected, then the least significant byte of the long word written into the
FIFO will be read out first, followed by the most significant byte. The mode desired
is configured during master reset by the state of the Big-Endian (BE) pin. See
Figure 5 for Bus-Matching Byte Arrangement.
to select the parity bit in the word loaded into the parallel port (D
programming the flag offsets. If Interspersed Parity mode is selected, then the
FIFO will assume that the parity bit is located in bit positions D8, D17, D26 and
D35 during the parallel programming of the flag offsets. If Non-Interspersed
Parity mode is selected, then D8 and D17 are assumed to be valid bits. IP mode
is selected during Master Reset by the state of the IP input pin.
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
The device can be configured with different input and output bus widths as
A Big-Endian/Little-Endian data word format is provided. This function is
The Interspersed/Non-Interspersed Parity (IP) bit function allows the user
0
-Dn) when
4
automatically power down. Once in the power down state, the standby supply
current consumption is minimized. Initiating any operation (by activating control
inputs) will immediately take the device out of the power down state.
Chip Select pin (RCS) are provided on the FIFO. The Synchronous Read Chip
Select is synchronized to the RCLK. Both the output enable and read chip select
control the output buffer of the FIFO, causing the buffer to be either HIGH
impedance or LOW impedance.
Scan feature, compliant with IEEE 1449.1 Standard Test Access Port and
Boundary Scan Architecture.
read) in either LVTTL or HSTL mode, each ports selection independent of the
other. The write port selection is made via WHSTL and the read port selection
via RHSTL. An additional input SHSTL is also provided, this allows the user
to select HSTL operation for other pins on the device (not associated with the
write or read ports).
IDT’s high speed submicron CMOS technology.
If, at any time, the FIFO is not actively performing an operation, the chip will
Both an Asynchronous Output Enable pin (OE) and Synchronous Read
A JTAG test port is provided, here the FIFO has fully functional Boundary
The TeraSync FIFO has the capability of operating its ports (write and/or
The IDT72T7285/72T7295/72T72105/72T72115 are fabricated using
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES

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