IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFOTM 256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18" />
參數(shù)資料
型號: IDT72V245L15TFI
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 23/25頁
文件大?。?/td> 0K
描述: IC FIFO SYNC 4096X18 15NS 64QFP
標(biāo)準(zhǔn)包裝: 80
系列: 72V
功能: 同步
存儲容量: 72K(4K x 18)
訪問時間: 15ns
電源電壓: 3 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
供應(yīng)商設(shè)備封裝: 64-TQFP(10x10)
包裝: 托盤
其它名稱: 72V245L15TFI
7
IDT72V205/72V215/72V225/72V235/72V245 3.3V CMOS SyncFIFOTM
256 x 18, 512 x 18, 1,024 x 18, 2,048 x 18 and 4,096 x 18
COMMERCIALANDINDUSTRIAL
TEMPERATURERANGES
MARCH 2013
ThecontentsoftheoffsetregisterscanbereadonthedataoutputlinesQ0-
Q11 when the LD pin is set LOW and REN is set LOW. Data can then be read
onthenextLOW-to-HIGHtransitionofRCLK. ThefirsttransitionofRCLKwill
presenttheemptyoffsetvaluetothedataoutputlines.ThenexttransitionofRCLK
willpresentthefulloffsetvalue.OffsetregistercontentcanbereadoutintheIDT
Standard mode only. It cannot be read in the FWFT mode.
SYNCHRONOUS vs ASYNCHRONOUS PROGRAMMABLE FLAG TIM-
ING SELECTION
The IDT72V205/72V215/72V225/72V235/72V245 can be configured
during the "Configuration at Reset" cycle described in Table 3 with either
asynchronous or synchronous timing for PAE and PAF flags.
If asynchronous PAE/PAF configuration is selected (as per Table 3), the
PAEisassertedLOWontheLOW-to-HIGHtransitionofRCLK.PAEisresetto
HIGHontheLOW-to-HIGHtransitionofWCLK.Similarly,thePAFisasserted
LOWontheLOW-to-HIGHtransitionofWCLKandPAFisresettoHIGHonthe
LOW-to-HIGHtransitionofRCLK.Fordetailtimingdiagrams,seeFigure13for
asynchronous PAE timing and Figure 14 for asynchronous PAF timing.
IfsynchronousPAE/PAFconfigurationisselected,thePAEisassertedand
updated on the rising edge of RCLK only and not WCLK. Similarly, PAF is
assertedandupdatedontherisingedgeofWCLKonlyandnotRCLK.Fordetail
timingdiagrams,seeFigure22forsynchronousPAEtimingandFigure23for
synchronousPAFtiming.
REGISTER-BUFFERED FLAG OUTPUT SELECTION
The IDT72V205/72V215/72V225/72V235/72V245 can be configured
duringthe"ConfigurationatReset"cycledescribedinTable4withsingle,double
ortripleregister-bufferedflagoutputsignals.Thevariouscombinationsavail-
able are described in Table 4 and Table 5. In general, going from single to
doubleortriplebufferedflagoutputsremovesthepossibilityofmetastableflag
indicationsonboundarystates(i.e,emptyorfullconditions).Thetrade-offisthe
addition of clock cycle delays for the respective flag to be asserted. Not all
combinationsof register-bufferedflagoutputsaresupported.Register-buffered
outputsapplytotheEmptyFlagandFullFlagonly. Partialflagsarenoteffected.
Table 4 and Table 5 summarize the options available.
Number of Words in FIFO
IDT72V205
IDT72V215
IDT72V225
IDT72V235
IDT72V245
FF PAF
HF PAE EF
00
0
H
L
1 to n(1)
HH
H
L
H
(n + 1) to 128
(n + 1) to 256
(n + 1) to 512
(n + 1) to 1,024
(n + 1) to 2,048
H
129 to (256-(m+1))(2)
257 to (512-(m+1))(2)
513 to (1,024-(m+1))(2)
1,025 to (2,048-(m+1))(2)
2,049 to (4,096-(m+1))(2)
HH
L
H
(256-m)to255
(512-m)to511
(1,024-m)to1,023
(2,048-m)to2,047
(4,096-m)to4,095
H
L
H
256
512
1,024
2,048
4,096
L
H
TABLE 1 — STATUS FLAGS FOR IDT STANDARD MODE
TABLE 2 — STATUS FLAGS FOR FWFT MODE
Number of Words in FIFO
IDT72V205
IDT72V215
IDT72V225
IDT72V235
IDT72V245
IR PAF HF PAE OR
00
0
L
H
L
H
1 to (n + 1)(1)
LH
H
L
(n + 2) to 129
(n + 2) to 257
(n + 2) to 513
(n + 2) to 1,025
(n + 2) to 2,049
L
H
L
130 to (257-(m+1))(2)
258 to (513-(m+1))(2)
514 to (1,025-(m+1))(2)
1,026 to (2,049-(m+1))(2)
2,050 to (4,097-(m+1))(2)
LH
L
(257-m) to 256
(513-m) to 512
(1,025-m) to 1,024
(2,049-m) to 2,048
(4,097-m) to 4,096
LL
L
H
L
257
513
1,025
2,049
4,097
H
L
H
L
NOTES:
1. n = Empty Offset (Default Values : IDT72V205 n = 31, IDT72V215 n = 63, IDT72V225/72V235/72V245 n = 127)
2. m = Full Offset (Default Values : IDT72V205 m = 31, IDT72V215 m = 63, IDT72V225/72V235/72V245 m = 127)
NOTES:
1. n = Empty Offset (Default Values : IDT72V205 n = 31, IDT72V215 n = 63, IDT72V225/72V235/72V245 n = 127)
2. m = Full Offset (Default Values : IDT72V205 m = 31, IDT72V215 m = 63, IDT72V225/72V235/72V245 m = 127)
相關(guān)PDF資料
PDF描述
IDT72V251L15JI IC FIFO SYNC 4096X18 15NS 32PLCC
IDT72V265LA15TFGI IC FIFO SS 16384X18 15NS 64STQFP
IDT72V271LA15PFI IC FIFO SS 16384X18 15NS 64QFP
IDT72V285L10TFG IC FIFO SS 65536X18 10NS 64STQFP
IDT72V291L15TFI IC FIFO SS 32768X36 15NS 64QFP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
IDT72V245L15TFI8 功能描述:IC FIFO SYNC 4096X18 15NS 64QFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:72V 標(biāo)準(zhǔn)包裝:90 系列:7200 功能:同步 存儲容量:288K(16K x 18) 數(shù)據(jù)速率:100MHz 訪問時間:10ns 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:64-LQFP 供應(yīng)商設(shè)備封裝:64-TQFP(14x14) 包裝:托盤 其它名稱:72271LA10PF
IDT72V245L20PF 功能描述:IC FIFO SYNC 4KX18 20NS 64QFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:72V 標(biāo)準(zhǔn)包裝:80 系列:7200 功能:同步 存儲容量:18.4K(1K x 18) 數(shù)據(jù)速率:- 訪問時間:10ns 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:64-LQFP 供應(yīng)商設(shè)備封裝:64-TQFP(10x10) 包裝:托盤 其它名稱:72225LB10TF
IDT72V245L20PF8 功能描述:IC FIFO SYNC 4KX18 20NS 64QFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:72V 標(biāo)準(zhǔn)包裝:80 系列:7200 功能:同步 存儲容量:18.4K(1K x 18) 數(shù)據(jù)速率:- 訪問時間:10ns 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:64-LQFP 供應(yīng)商設(shè)備封裝:64-TQFP(10x10) 包裝:托盤 其它名稱:72225LB10TF
IDT72V245L20TF 功能描述:IC FIFO SYNC 4096X18 20NS 64QFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:72V 標(biāo)準(zhǔn)包裝:80 系列:7200 功能:同步 存儲容量:18.4K(1K x 18) 數(shù)據(jù)速率:- 訪問時間:10ns 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:64-LQFP 供應(yīng)商設(shè)備封裝:64-TQFP(10x10) 包裝:托盤 其它名稱:72225LB10TF
IDT72V245L20TF8 功能描述:IC FIFO SYNC 4096X18 20NS 64QFP RoHS:否 類別:集成電路 (IC) >> 邏輯 - FIFO 系列:72V 標(biāo)準(zhǔn)包裝:80 系列:7200 功能:同步 存儲容量:18.4K(1K x 18) 數(shù)據(jù)速率:- 訪問時間:10ns 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:64-LQFP 供應(yīng)商設(shè)備封裝:64-TQFP(10x10) 包裝:托盤 其它名稱:72225LB10TF