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72V36100L6PFGI Datasheet(PDF) 5 Page - Integrated Device Technology

Part # 72V36100L6PFGI
Description  3.3 VOLT HIGH-DENSITY SUPERSYNC II
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

72V36100L6PFGI Datasheet(HTML) 5 Page - Integrated Device Technology

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COMMERCIAL AND INDUSTRIAL
TEMPERATURE RANGES
IDT72V36100/72V36110 3.3V HIGH DENSITY SUPERSYNC IITM 36-BIT FIFO
65,536 x 36 and 131,072 x 36
BM
IW
OW
Write Port Width
Read Port Width
L
L
L
x36
x36
H
L
L
x36
x18
H
L
H
x36
x9
H
H
L
x18
x36
H
H
H
x9
x36
TABLE 1 — BUS-MATCHING CONFIGURATION MODES
IfasynchronousPAE/PAFconfigurationisselected, the PAE isasserted
LOWontheLOW-to-HIGHtransitionofRCLK.PAEisresettoHIGHontheLOW-
to-HIGHtransitionofWCLK.Similarly,thePAFisassertedLOWontheLOW-
to-HIGH transition of WCLK and PAF is reset to HIGH on the LOW-to-HIGH
transitionofRCLK.
IfsynchronousPAE/PAFconfigurationisselected,thePAEisassertedand
updated on the rising edge of RCLK only and not WCLK. Similarly, PAF is
assertedandupdatedontherisingedgeofWCLKonlyandnotRCLK.Themode
desiredisconfiguredduringMasterResetbythestateoftheProgrammableFlag
Mode (PFM) pin.
TheRetransmitfunctionallowsdatatoberereadfromtheFIFOmorethan
once. ALOWontheRTinputduringarisingRCLKedgeinitiatesaretransmit
operation by setting the read pointer to the first location of the memory array.
Azero-latencyretransmittimingmodecanbeselectedusingtheRetransmit
timing Mode pin (RM). During Master Reset, a LOW on RM will select zero
latency retransmit. A HIGH on RM during Master Reset will select normal
latency.
If zero latency retransmit operation is selected, the first data word to be
retransmittedwillbeplacedontheoutputregisterwithrespecttothesameRCLK
edgethatinitiatedtheretransmitbasedonRTbeingLOW.
RefertoFigure11and12forRetransmitTimingwithnormallatency. Refer
to Figure 13 and 14 for Zero Latency Retransmit Timing.
Thedevicecanbeconfiguredwithdifferentinputandoutputbuswidthsas
shown in Table 1.
A Big-Endian/Little-Endian data word format is provided. This function is
usefulwhendataiswrittenintotheFIFOinlongwordformat(x36/x18)andread
outoftheFIFOinsmallword(x18/x9)format.IfBig-Endianmodeisselected,
thenthemostsignificantbyte(word)ofthelongwordwrittenintotheFIFOwill
bereadoutoftheFIFOfirst,followedbytheleastsignificantbyte.IfLittle-Endian
formatisselected,thentheleastsignificantbyteofthelongwordwrittenintothe
FIFOwillbereadoutfirst,followedbythemostsignificantbyte.Themodedesired
isconfiguredduringmasterresetbythestateoftheBig-Endian(BE)pin.See
Figure 4 for Bus-Matching Byte Arrangement.
TheInterspersed/Non-InterspersedParity(IP)bitfunctionallowstheuser
to select the parity bit in the word loaded into the parallel port (D0-Dn) when
programmingtheflagoffsets.IfInterspersedParitymodeisselected,thenthe
FIFOwillassumethattheparitybitislocatedinbitpositionsD8,D17,D26and
D35 during the parallel programming of the flag offsets. If Non-Interspersed
Parity mode is selected, then D8, D17 and D26 are assumed to be valid bits
and D32, D33, D34 and D35 are ignored. IP mode is selected during Master
Reset by the state of the IP input pin. Interspersed Parity control only has an
effectduringparallelprogrammingoftheoffsetregisters.Itdoesnoteffectthedata
written to and read from the FIFO.
A JTAG test port is provided, here the FIFO has fully functional Boundary
Scan feature, compliant with IEEE 1149.1 Standard Test Access Port and
BoundaryScanArchitecture.
If,atanytime,theFIFOisnotactivelyperforminganoperation,thechipwill
automaticallypowerdown.Onceinthepowerdownstate,thestandbysupply
currentconsumptionisminimized. Initiatinganyoperation(byactivatingcontrol
inputs)willimmediatelytakethedeviceoutofthepowerdownstate.
TheIDT72V36100/72V36110arefabricatedusinghighspeedsubmicron
CMOStechnology.
NOTE:
1. Pin status during Master Reset.


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