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TPS2342 Datasheet(PDF) 35 Page - Texas Instruments |
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TPS2342 Datasheet(HTML) 35 Page - Texas Instruments |
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35 / 53 page  TPS2342 SLUS572E − OCTOBER, 2003 − REVISED FEBRUARY 2005 35 www.ti.com APPLICATION INFORMATION Multi-Slot Serial Mode In multi-slot serial mode, one serial interface functions for both slots of the TPS2342. This serial interface can be cascaded to additional TPS2342 devices. To configure the TPS2342 for multi-slot serial mode, pull SIDA to 3.3 V through a 10-k Ω resistor. This insures that SIDA is high on the rising edge of PGOOD. Also, pull SIDB to DIGGND through a 10-k Ω resistor. This insures that SIDB is low on the rising edge of PGOOD. Slot A Analog Circuits Serial/Parallel Converter PCI Hotplug Controller Inputs Outputs Inputs Outputs U2 U3 U1 Slot A Slot B Slots C and D U4 Slots E and F Analog I/O POWER CONTROLLER Slot B Analog Circuits RESETB CLKENB BUSENB ATTLEDB PWRLEDB SWB PRSNT2B PRSNT1B BUTTONB M66ENB RESETA CLKENA BUSENA ATTLEDA PWRLEDA PRSNT2A PRSNT1A BUTTONA/TEST M66ENA SWA (input) (output) (output) PMEOA PGOOD PMEOB CLKA LCA RSTA SIDA/MSMODE SODA SODB SIDB/DMODE CLKB LCB RSTB PMEA PCIXCAPA PMEB PCIXCAPB PWROFFB AUXFLTB PWROFFA VIOSELB PWRENA AUXFLTA CLK LC RST (= PCIRST) SOD SID SOD1 SID1 SOD2 SID2 SOD3 SID3 selects serial mode selects multi-slot mode FAULTB FAULTBA XCAPCMP1B-4B XCAPCMP1B-4B VIOSELA Figure 10. Multi-Slot Serial Mode Equivalent Interface Block Diagram SID and SOD SID and SOD are signals named for the hot plug controller functions, serial input data and serial output data. The TPS2342 slot controllers keep the same signal naming convention as the hot plug controllers so SID is the slot controller’s output data and SOD is the slot controller’s input data. |
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