參數(shù)資料
型號(hào): IDT723651L20PF8
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 11/21頁
文件大?。?/td> 0K
描述: IC FIFO SYNC 2048X36 120QFP
標(biāo)準(zhǔn)包裝: 750
系列: 7200
功能: 同步
存儲(chǔ)容量: 72K(2K x 36)
數(shù)據(jù)速率: 50MHz
訪問時(shí)間: 20ns
電源電壓: 4.5 V ~ 5.5 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 120-LQFP
供應(yīng)商設(shè)備封裝: 120-TQFP(14x14)
包裝: 帶卷 (TR)
其它名稱: 723651L20PF8
COMMERCIALANDINDUSTRIAL
TEMPERATURERANGES
IDT723631/723641/723651 CMOS SyncFIFO
512 x 36, 1,024 x 36 and 2,048 x 36
19
Figure 17. Block Diagram of 512 x 36, 1,024 x 36, 2,048 x 36 Synchronous FIFO Memory with
Programmable Flags used in Depth Expansion Configuration
NOTES:
1. Mailbox feature is not supported in depth expansion applications. (MBA + MBB tie to GND)
2. Transfer clock should be set either to the Write Port Clock (CLKA) or the Read Port Clock (CLKB), whichever is faster.
3. Retransmit feature is not supported in depth expansion applications.
4. The amount of time it takes for OR of the last FIFO in the chain to go HIGH (i.e. valid data to appear on the last FIFO’s outputs) after a word has been written to the first FIFO is the
sum of the delays for each individual FIFO: (N - 1)*(4*transfer clock) + 3*TRCLK, where N is the number of FIFOs in the expansion and TRCLK is the CLKB period.
5. The amount of time is takes for IR of the first FIFO in the chain to go HIGH after a word has been read from the last FIFO is the sum of the delays for each individual FIFO:
(N - 1)*(3*transfer clock) + 2*TWCLK, where N is the number of FIFOs in the expansion and TWCLK is the CLKA period.
Figure 16. Timing for
Mail2
Mail2 Register and MBF2
MBF2
MBF2 Flag
3023 drw19
CLKB
ENB
B0 - B35
MBB
CSB
W/RB
CLKA
MBF2
CSA
MBA
ENA
A0 - A35
W/RA
W1
tENS2
tENH2
tDS
tDH
tPMF
tENS1
tENH1
tDIS
tEN
tPMR
W1 (Remains valid in Mail2 Register after read)
tENS2
tENH2
tENS2
tENH2
tENS2
tENH2
DATA IN (Dn)
READ CLOCK (CLKB)
READ ENABLE (ENB)
OUTPUT READY (OR)
CHIP SELECT (CSB)
DATA OUT (Qn)
TRANSFER CLOCK
3023 drw20
IDT
723631
723641
723651
VCC
WRITE
READ
A0-A35
MBA
CHIP SELECT (CSA)
WRITESELECT(W/RA)
WRITE ENABLE (ENA)
ALMOST-FULL FLAG (AF)
INPUT READY (IR)
WRITE CLOCK (CLKA)
CLKB
OR
ENB
CSB
B0-B35
W/RB
MBB
CLKA
ENA
IR
CSA
MBA
A0-A35
W/RA
READSELECT(W/RB)
ALMOST-EMPTY FLAG (AE)
B0-B35
MBB
n
Qn
Dn
VCC
IDT
723631
723641
723651
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