1. t
參數(shù)資料
型號(hào): IDT72V3641L20PF
廠商: IDT, Integrated Device Technology Inc
文件頁(yè)數(shù): 9/21頁(yè)
文件大?。?/td> 0K
描述: IC SYNCFIFO 1024X36 20NS 120TQFP
標(biāo)準(zhǔn)包裝: 45
系列: 72V
功能: 異步,同步
存儲(chǔ)容量: 36.8K(1K x 36)
數(shù)據(jù)速率: 520Mbs
訪問(wèn)時(shí)間: 20ns
電源電壓: 3 V ~ 3.6 V
工作溫度: 0°C ~ 70°C
安裝類(lèi)型: 表面貼裝
封裝/外殼: 120-LQFP
供應(yīng)商設(shè)備封裝: 120-TQFP(14x14)
包裝: 托盤(pán)
其它名稱: 72V3641L20PF
17
COMMERCIALTEMPERATURERANGE
IDT72V3631/72V3641/72V3651
3.3V CMOS SYNCFIFO 512 x 36, 1,024 x 36 and 2,048 x 36
NOTES:
1. tSKEW2 is the minimum time between a rising CLKA edge and a rising CLKB edge for
AF to transition HIGH in the next CLKA cycle. If the time between the rising CLKB edge and rising
CLKA edge is less than tSKEW2, then
AF may transition HIGH one CLKA cycle later than shown.
2. Depth is 512 for the IDT72V3631, 1,024 for the IDT72V3641, and 2,048 for the IDT72V3651.
3. FIFO write (
CSA = LOW, W/RA = HIGH, MBA = LOW), FIFO read (CSB = LOW, W/RB = HIGH, MBB = LOW).
Figure 10. Timing for
AF
AF when FIFO is Almost-Full
Figure 12.
AE
AE Maximum Latency When Retransmit Increases the Number of Stored Words Above X.
NOTE:
1. X is the value loaded in the Almost-Empty flag Offset register.
NOTE:
1. CSB = LOW, W/RB = HIGH, MBB = LOW. No input enables other than RTM and RFM are needed to control retransmit mode or begin a retransmit. Other enables are shown only to relate
retransmit operations to the FIFO output register.
Figure 11. Retransmit Timing Showing Minimum Retransmit Length
AF
CLKA
ENB
ENA
CLKB
4658 drw 13
12
tSKEW2
tENS1
tENH1
tPAF
tENS1
tENH1
tPAF
(1)
[Depth
-(Y+1)] Words in FIFO
(2)
(Depth
-Y) Words in FIFO
(2)
CLKB
ENB
RTM
RFM
OR
B0-B35
W0
W1
W2
W0
W1
HIGH
tA
Initiate Retransmit Mode
with W0 as First Word
Retransmit from
Selected Position
End Retransmit
Mode
4658 drw 14
tENS1
tENH1
tRMS
tRMH
tRMS
tRMH
tRMS
tRMH
CLKB
RTM
RFM
AE
tPAE
X or fewer words from Empty
(X+1) or more
words from Empty
4658 drw 15
tRMS
tRMH
1
2
HIGH
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