Notes on Hub Module SN 03: Latest Rev. 30-June-2017 -------------------------- - Start work on SN-03 at 17:50 14-June-2017 - Check the resistance from the various power buses to Ground looking for shorts - all OK with same values as SN-02. - Write SN on SN-03. - Verify that the ESD Grounds, e.g. strips along the bottom of the card, RJ-45 shields, and guide pin receptacles are all connected. - File smooth the top and bottom edges. - Clean off flux residue around J2 and around ATCA Power Modules. - Install the Guide Pin Receptacles with M2.5 10mm and flat washer. - Re-press in the Zone 1 & 2 connetors and the RJ45s. - Install the 4 backplane MPO connectors with 2-15 5/16" screws and lock washers. - Install the 4 TSSOP parts on the back side; 3x 24 pin 1x 14 pins. - Remove the following components from the Power Supply sections: R1001 DCDC_1 Assembly House value was 180 Ohm R1201 DCDC_5 Assembly House value was 180 Ohm R1251 DCDC_6 Assembly House value was 180 Ohm Remove the following resistor "straps" "jumpers" from the Phys Chips circuits U21 and U22 to set them up in the standard way for Hub Module operation. R1901 Remove the 10k Ohm resistor U21 Adrs_0 = Low Bot R1903 Remove the 10k Ohm resistor U21 Adrs_1 = Low Bot R1905 Remove the 10k Ohm resistor U21 Adrs_2 = Low Bot R1910 Remove the 1k Ohm resistor U21 Mode_1 = Hi Bot R1912 Remove the 1k Ohm resistor U21 Mode_0 = Hi Bot R1951 Remove the 10k Ohm resistor U22 Adrs_0 = Low Bot R1953 Remove the 10k Ohm resistor U22 Adrs_1 = Low Bot R1955 Remove the 10k Ohm resistor U22 Adrs_2 = Low Bot R1960 Remove the 1k Ohm resistor U22 Mode_1 = Hi Bot R1962 Remove the 1k Ohm resistor U22 Mode_0 = Hi Bot Remove the following SMD components: R2995 part of ROD Power Good circuit Bot R2998 part of ROD Power Good circuit Bot Q2951 part of power supply Ramp circuit Bot R1607 PLL series input resistor Top R1608 PLL series input resistor Top - Install all of the Resistor, Capacitor, and BJT SMD components: R2995 20k Ohm 0603 part of ROD Power Good circuit Bot R2998 2k Ohm 0603 part of ROD Power Good circuit Bot Q2951 mmbt-3904 part of power supply Ramp circuit Bot R1607 200 Ohm 0603 PLL series input resistor Top R1608 200 Ohm 0603 PLL series input resistor Top R2972 3.48k Ohm 0603 Power Good Comparator Scale Res. Bot R2974 2.26k Ohm 0603 Power Good Comparator Scale Res. Bot C1541 470 nFd 25 V 0805 BULK_3V3 bypass capacitor Bot L1953 Wurth No 742792116 with kapton tape by Phys U22 Bot DCDC_1 FPGA_CORE Converter 0.950 Volt C1001 Cap_10_nFd_0805 Loop Compensation CTune Bot R1001 Res_220_Ohm_0805 Loop Compensation RTume Bot R1002 Res_34k_Ohm_0805 Output Voltage Set RTrim Bot R1006 Res_34k_Ohm_0805 Ramp Scale Resistor Bot DCDC_2 MGT_AVCC Converter 1.000 Volt R1051 Res_2k_Ohm_0805 Loop Compensation RTune Bot C1051 Cap_100_nFd_0805 Loop Compensation CTune Bot R1052 Res_30k_Ohm_0805 Output Voltage Set RTrim Bot R1056 Res_30k_Ohm_0805 Ramp Scale Resistor Bot R1053 Res_15.4k_Ohm_0603 Adrs_0 Set resistor Bot JMP1052 Res_Zero_Ohm_0603 V_Sense_+ post insuctor Top JMP1053 Res_Zero_Ohm_0603 HF Feedback pre incudtor Bot DCDC_3 MGT_AVTT Converter 1.200 Volt R1101 Res_2k_Ohm_0805 Loop Compensation RTune Bot C1101 Cap_100_nFd_0805 Loop Compensation CTune Bot R1103 Res_23.7k_Ohm_0603 Adrs_0 Set resistor Bot JMP1102 Res_Zero_Ohm_0603 V_Sense_+ post insuctor Top JMP1103 Res_Zero_Ohm_0603 HF Feedback pre incudtor Bot DCDC_4 MGT_AVAUX 1.800 Volt Linear R1152 Res_464_Ohm_0603 Voltage Set Resistor Top R1153 Set Full CCW DCDC_5 SWCH_1V2 Converter 1.200 Volt C1201 Cap_10_nFd_0805 Loop Compensation CTune Bot R1201 Res_220_Ohm_0805 Loop Compensation RTume Bot R1203 Res_36.5k_Ohm_0603 Adrs_0 Set resistor Bot DCDC_6 Bulk_1V8 Converter 1.800 Volt C1251 Cap_10_nFd_0805 Loop Compensation CTune Bot R1251 Res_220_Ohm_0805 Loop Compensation RTume Bot R1253 Res_54.9k_Ohm_0603 Adrs_0 Set resistor Bot DCDC_7 FAN_1V8 Converter 1.800 Volt R1301 Res_2k_Ohm_0805 Loop Compensation RTune Bot C1301 Cap_100_nFd_0805 Loop Compensation CTune Bot JMP1302 Res_Zero_Ohm_0603 V_Sense_+ post insuctor Top JMP1303 Res_Zero_Ohm_0603 HF Feedback pre incudtor Bot DCDC_8 Bulk_3V3 Converter 3.300 Volt C1351 Cap_10_nFd_0805 Loop Compensation CTune Bot R1351 Res_220_Ohm_0805 Loop Compensation RTume Bot R1352 Res_4.42k_Ohm_0805 Output Voltage Set RTrim Bot R1356 Res_4.42k_Ohm_0805 Ramp Scale Resistor Bot R1353 Res_130k_Ohm_0603 Adrs_0 Set resistor Bot DCDC_9 Bulk_2V5 2.500 Volt Linear R1172 Res_1070_Ohm_0603 Voltage Set Resistor Top R1173 Set Full CCW - Install the top and bottom front panel brackets to the pcb. Use 4-40 1/2" screws in all 4 locations. Center the brackets, push back twards the back of the card, and tighten. Note that flat washers can not be used under these because with flat washers the head of the screw does not fit under the lip of the front panel. Note that this step needs to be moved to very early in the Final Assembly process as these front panel brackets give protection for all top side components along the front edge of the card - especially they protect the IPMC connector. Cut the height of the active edge of the mid bracket down by 0.185" as it no longer loops in back of the card but rather uses 7x of the high density tape. - Cut down the thickness of the pcb for the front panel Handles. Cut from the back side. Cut in a circle about 0.40" diameter and running tangent to the edges of the card. Cut down through 2 Ground Planes - just barely cutting through the second Ground Plane. Using the micrometer verify that the whole cut down area is flat. The remaining pcb thickness sould be about 107 to 109 mils. File the edges smooth. Explore with an exacto knife to verify that there are no loose strands of copper trapped in the edges of the cut out area. Air hose all cut G10 and Copper off from the card. Super glue the rough edge of the cout out area to seel the rough edge and improve the look of this part of the card. There are now almost two full layers of G10 between the metal of the ATCA handle and the next Ground Plane in the card. There are no traces in danger in this part of the card. There are two Ground Planes between the metal part of the ATCA Handle and the first possible "hot" parts of the card. - Check of the Hub SN-03 PLL clocks: 40.08 MHz PLL 40.0727 MHz free run 40.08 MHz PLL 40.0730 to 40.0845 MHz track 320.64 MHz PLL 40.0759 to 40.0824 MHz track Spare Oscillator 40.078445 MHz running Both sides of all clock fanouts were checked and are running: to Hub logic, to ROD, to Backplane, to MGT Quad Reference clock. I would move to 324 Ohm pull-downs on the Sapre Oscillator of the next card. The 432 Ohm on this card may be a little higher than optimal. - Check of the Hub SN-03 currents during initial running I assume with the Safe design loaded. Power Bus: FPGA MGT MGT Swch Bulk Fan Bulk Core AVCC AVTT 1V2 1V8 1V8 3V3 ---- ---- ---- ---- ---- ---- ---- Address: 40 41 42 43 44 45 46 Volts: 0.94 0.99 1.19 1.21 1.79 1.82 - Amps: 1.25 0.12 0.19 1.94 0.50 12.12 - Safe Config - Hub SN-03 was shipped to Ed at Cambridge on 30-June-2017.