Electronic Components Datasheet Search |
|
IDT72V3640L75PF Datasheet(PDF) 4 Page - Integrated Device Technology |
|
IDT72V3640L75PF Datasheet(HTML) 4 Page - Integrated Device Technology |
4 / 36 page 4 COMMERCIAL AND INDUSTRIAL TEMPERATURERANGES IDT72V3640/50/60/70/80/90/110 3.3V HIGH DENSITY SUPERSYNC IITM 36-BIT FIFO 1,024 x 36, 2,048 x 36, 4,096 x 36, 8,192 x 36, 16,384 x 36, 32,768 x 36, 65,536 x 36, 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 assertedandupdatedontherisingedgeofWCLKonlyandnotRCLK.Themode desiredisconfiguredduringMasterResetbythestateoftheProgrammableFlag Mode (PFM) pin. The Retransmit function allows data to be reread from the FIFO more than once. A LOW on the RTinputduringarisingRCLKedgeinitiatesaretransmit operation by setting the read pointer to the first location of the memory array. A zero-latency retransmit timing mode can be selected using the Retransmit 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 edge that initiated the retransmit based on RT being LOW. Refer to Figure 11 and 12 forRetransmit Timingwith normal latency. Refer to Figure 13 and 14 for Zero Latency Retransmit Timing. The device can be configured with different input and output bus widths as shown in Table 1. A Big-Endian/Little-Endian data word format is provided. This function is usefulwhendataiswrittenintotheFIFOinlongwordformat(x36/x18)andread out of the FIFO in small word (x18/x9) format. If Big-Endian mode is selected, then the most significant byte (word) of the long word written into the FIFO will bereadoutoftheFIFOfirst,followedbytheleastsignificantbyte.IfLittle-Endian formatisselected,thentheleastsignificantbyteofthelongwordwrittenintothe FIFOwillbereadoutfirst,followedbythemostsignificantbyte.Themodedesired is configured during master reset by the state of the Big-Endian ( BE)pin.See Figure 4 for Bus-Matching Byte Arrangement. The Interspersed/Non-Interspersed Parity (IP) bit function allows the user to select the parity bit in the word loaded into the parallel port (D0-Dn) when programming the flag offsets. If Interspersed Parity mode is selected, then the FIFO will assume that the parity bit is located in bit positions D8, D17, D26 and 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. If, at any time, the FIFO is not actively performing an operation, the chip will automatically power down. Once in the power down state, the standby supply currentconsumptionisminimized. Initiatinganyoperation(byactivatingcontrol inputs) will immediately take the device out of the power down state. The IDT72V3640/72V3650/72V3660/72V3670/72V3680/72V3690/ 72V36100/72V36110arefabricatedusingIDT’shighspeedsubmicronCMOS technology. NOTE: 1. Pin status during Master Reset. |
Similar Part No. - IDT72V3640L75PF |
|
Similar Description - IDT72V3640L75PF |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.NET |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |