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UCD9244RGCR Datasheet(PDF) 9 Page - Texas Instruments |
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UCD9244RGCR Datasheet(HTML) 9 Page - Texas Instruments |
9 / 39 page UCD9244 www.ti.com SLVSAL6A – NOVEMBER 2010 – REVISED FEBRUARY 2011 Table 1. PIN FUNCTIONS PIN PIN LABEL PIN DESCRIPTION NUMBER 1 CS4A Power stage 4A current sense input and input to analog comparator 4 2 CS3A Power stage 3A current sense input and input to analog comparator 3 3 CS2A Power stage 2A current sense input and input to analog comparator 2 4 VinMon Input Voltage monitor 5 Temp1/AuxADC1 Temperature sense input for Rail 1, or Auxiliary ADC input 1 6 Temp2/AuxADC2 Temperature sense input for Rail 2, or Auxiliary ADC input 2 7 V33DIO1 Digital Input / Output 3.3V supply 8 Dgnd1 Digital ground 9 nRESET Active low device reset input. Pull up to 3.3V with a 10k ohm resistor 10 JTAG_RCK JTAG Return Clock 11 FLT1A Fault indicator for stage 1A 12 VID1S VID Select pin for Rail 1 13 FLT2A Fault indicator for stage 2A 14 VID2S VID Select pin for Rail 2 15 PMBus_Clk PMBus Clock. Pull up to 3.3V with a 2k ohm resistor 16 PMBus_Data PMBus Data. Pull up to 3.3V with a 2k ohm resistor 17 DPWM1A Digital Pulse Width Modulator output 1A 18 VID1C VID input pin for Rail 1 - most significant bit 19 DPWM2A Digital Pulse Width Modulator output 2A 20 VID2A VID input pin for Rail 2 - least significant bit 21 DPWM3A Digital Pulse Width Modulator output 3A 22 VID2B VID input pin for Rail 2 23 DPWM4A Digital Pulse Width Modulator output 4A 24 Power_Good Power Good Indication 25 FLT3A Fault indicator for stage 3A 26 Dgnd2 Digital Ground 27 PMBus_Alert PMBus Alert. Pull up to 3.3V with a 2k ohm resistor 28 PMBus_Cntrl PMBus Control. Pull up to 3.3V with a 2k ohm resistor 29 VID2C VID input pin for Rail 2 - most significant bit 30 VID3A VID input pin for Rail 3 - least significant bit 31 VID3B VID input pin for Rail 3 32 VID3C VID input pin for Rail 3 - most significant bit 33 VID3S VID Select pin for Rail 3 34 FLT4A Fault indicator for stage 4A 35 VID4S VID Select pin for Rail 4 36 VID4A/JTAG_TCK Mux 'ed pin - VID input pin for Rail 4 (LSB), JTAG Test Clock 37 VID4B/JTAG_TDO Mux 'ed pin - VID input pin for Rail 4, JTAG Test Data Output 38 SyncIn/JTAG_TDI Mux 'ed pin - SyncIn, JTAG Test Data In. Tie to V33D with 10kohm resistor 39 VID4C/JTAG_TMS Mux 'ed pin - VID input for rail 4 (MSB); JTAG Test mode select. Tie to V33D with a 10kohm resistor 40 JTAG_nTRST JTAG Test Reset - Tie to ground with a 10kohm resistor 41 VID1A VID input pin for Rail 1 - least significant bit 42 VID1B VID input pin for Rail 1 43 Dgnd3 Digital Ground 44 V33DIO2 Digital Input / Output 3.3V supply 45 V33D Digital core 3.3V supply 46 V33A Analog 3.3V supply 47 BPCap 1.8V Bypass Capacitor -- tie 0.1 µF cap to analog ground © 2010–2011, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Link(s) :UCD9244 |
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