Electronic Components Datasheet Search |
|
IDT72V71643BC Datasheet(PDF) 7 Page - Integrated Device Technology |
|
IDT72V71643BC Datasheet(HTML) 7 Page - Integrated Device Technology |
7 / 30 page 7 COMMERCIAL TEMPERATURE RANGE IDT72V71643 3.3V TIME SLOT INTERCHANGE DIGITAL SWITCH 4,096 x 4,096 If the LPBK bit is high, the associated TX output channel data is internally looped back to the RX input channel (i.e., RXn channel m data comes from the TXn channel m). If the LPBK bit is low, the loopback feature is disabled. For proper per-channel loopback operation, the contents of the frame delay offset registers must be set to zero and the device must be in regular switch mode (DR3-0 = 0x0, 0x1 or 0x2). OUTPUT ENABLE INDICATION TheIDT72V71643hasthecapabilitytoindicatethestateoftheoutputs(active or three-state) by enabling the Output Enable Indication (OEI) in the control register. IntheOEImodehowever,onlyhalfoftheoutputstreamsareavailable. If this same capability is desired with all 32 streams, this can be accomplished byusingtwoIDT72V71643devices. Inonedevice,theAllOutputEnable(AOE) bitissettoaonewhileintheothertheAOEissettozero. Inthisway,onedevice acts as the switch and the other as a three-state control device. See Figure 8. It is important to note if the TSI device is programmed for AOE and the OEI is also set, the device will be in the AOE mode not OEI. INITIALIZATION OF THE IDT72V71643 Afterpowerup,theIDT72V71643shouldbereset.Duringreset,theinternal registersareputintotheirdefaultstateandallTXoutputsareputintothree-state. After reset however, the state of Connection Memory is unknown. As such, the outputsshouldbeputinhigh-impedancebyholdingtheODElow.WhiletheODE is low, the microprocessor can initialize the device, program the active paths, anddisableunusedoutputsbyprogrammingtheOEbitinConnectionMemory. Once the device is configured, the ODE pin (or OSB bit depending on initialization) can be switched. |
Similar Part No. - IDT72V71643BC |
|
Similar Description - IDT72V71643BC |
|
|
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 |