IDT72T72115 Integrated Device Technology, IDT72T72115 Datasheet - Page 44

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

NOTES:
1. n = PAE offset.
2. For IDT Standard Mode.
3. For FWFT Mode.
4. PAE is asserted LOW on RCLK transition and reset to HIGH on WCLK transition.
5. Select this mode by setting PFM LOW during Master Reset.
6. RCS = LOW.
NOTES:
1. m = PAF offset.
2. D = maximum FIFO Depth.
3. PAF is asserted to LOW on WCLK transition and reset to HIGH on RCLK transition.
4. Select this mode by setting PFM LOW during Master Reset.
5. RCS = LOW.
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
RCLK
RCLK
WCLK
WCLK
WEN
WEN
In IDT Standard Mode: D= 16,384 for the IDT72T7285, 32,768 for the IDT72T7295, 65,536 for the IDT72T72105 and 131,072 for the IDT72T72115.
In FWFT Mode: D= 16,385 for the IDT72T7285, 32,769 for the IDT72T7295, 65,537 for the IDT72T72105 and 131,073 for the IDT72T72115.
REN
REN
PAF
PAE
Figure 26. Asynchronous Programmable Almost-Empty Flag Timing (IDT Standard and FWFT Modes)
Figure 25. Asynchronous Programmable Almost-Full Flag Timing (IDT Standard and FWFT Modes)
D - (m + 1) words in FIFO
n + 1 words in FIFO
n words in FIFO
t
t
CLKH
CLKH
(2)
(3)
,
t
t
ENS
ENS
t
t
CLKL
CLKL
44
t
ENH
t
t
t
ENH
PAEA
PAFA
t
ENS
t
ENS
n + 1 words in FIFO
n + 2 words in FIFO
D - m words
in FIFO
t
t
PAFA
PAEA
(2)
(3)
COMMERCIAL AND INDUSTRIAL
,
TEMPERATURE RANGES
n + 1 words in FIFO
D - (m + 1) words
n words in FIFO
in FIFO
5994 drw30
5994 drw31
(2)
,
(3)