参数资料
型号: IDT72V811L20PF
厂商: IDT, Integrated Device Technology Inc
文件页数: 6/16页
文件大小: 0K
描述: IC FIFO SYNC 512X9 20NS 64QFP
标准包装: 90
系列: 72V
功能: 异步
存储容量: 4.6K(512 x 9)
数据速率: 50MHz
访问时间: 20ns
电源电压: 3 V ~ 3.6 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-TQFP(14x14)
包装: 托盘
其它名称: 72V811L20PF
14
IDT72V801/72V8211/72V821/72V831/72V841/72V851 3.3V DUAL CMOS SyncFIFOTM
DUAL 256 x 9, DUAL 512 x 9, DUAL 1K x 9, DUAL 2K x 9, DUAL 4K x 9, DUAL 8K x 9
COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
OCTOBER 22, 2008
OPERATINGCONFIGURATIONS
SINGLE DEVICE CONFIGURATION — When FIFO A (B) is in a Single
Device Configuration, the Read Enable 2
RENA2(RENB2) control input can
Figure 15. Block diagram of the two FIFOs contained in one IDT72V801/72V811/72V821/72V831/72V841/72V851
configured for an 18-bit width-expansion
be grounded (see Figure 14). In this configuration, the Write Enable 2/Load
WENA2/
LDA(WENB2/LDB) pin is set LOW at Reset so that the pin operates
as a control to load and read the programmable flag offsets.
Figure 14. Block Diagram of One of the IDT72V801/72V811/72V821/72V831/72V841/72V851's
two FIFOs configured as a single device
WIDTH EXPANSION CONFIGURATION — Word width may be in-
creased simply by connecting the corresponding input control signals of
FIFOs A and B. A composite flag should be created for each of the end-
pointstatusflags
EFAandEFB,alsoFFAandFFB). ThepartialstatusflagsPAEA,
PAFB, PAEA and PAFB can be detected from any one device. Figure 15
demonstrates an 18-bit word width using the two FIFOs contained in one
IDT72V801/72V811/72V821/72V831/72V841/72V851. Any word width can
be attained by adding additional IDT72V801/72V811/72V821/72V831/
72V841/72V851s.
When these devices are in a Width Expansion Configuration, the Read
Enable 2 (
RENA2 and RENB2) control inputs can be grounded (see Figure
15). Inthisconfiguration,theWriteEnable2/Load(WENA2/
LDA,WENB2/LDB)
pins are set LOW at Reset so that the pin operates as a control to load and read
the programmable flag offsets.
QA0 - QA8 (QB0 - QB8)
DA0 - DA8 (DB0 - DB8)
RSA (RSB)
RCLKA (RCLKB)
RENA1 (RENB1)
OEA (OEB)
EFA (EFB)
PAEA (PAEB)
RENA2 (RENB2)
WCLKA (WCLKB)
WENA1 (WENB1)
WENA2/LDA (WENB2/LDB)
FFA (FFB)
PAFA (PAFB)
IDT
72V801
72V811
72V821
72V831
72V841
72V851
FIFO
A (B)
4093 drw 16
DATA IN
WRITE CLOCK
18
9
RSB
READ CLOCK
9
18
RENB2
RENA2
WRITE ENABLE
FFA
EFB
OUTPUT ENABLE
READ ENABLE
9
WRITE ENABLE/LOAD
FFB
EFA
RSA
RAM
ARRAY
A
DATA OUT
RCLKA
EMPTY FLAG
RENB1
RENA1
OEB
OEA1
RCLKB
WCLKA
WCLKB
WENA1
WENB1
DA0 - DA8
DB0 - DB8
QA0 - QA8
QB0 - QB8
WENA2/LDA
2WENB2/LDB
RESET
9
FULL FLAG
4093 drw 17
RAM
ARRAY
B
256x9
512x9
1,024x9
2,048x9
4,096x9
8,192x9
256x9
512x9
1,024x9
2,048x9
4,096x9
8,192x9
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