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AN2787 Datasheet(PDF) 13 Page - STMicroelectronics |
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AN2787 Datasheet(HTML) 13 Page - STMicroelectronics |
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13 / 37 page  AN2787 I/O interface 13/37 5 I/O interface The PM6641 demonstration board has the following test points given in Table 2. Table 2. PM6641 demonstration board input/output interface Test point Description VCC (TP5) +5 V IC supply, positive terminal LDOIN (TP15) LDO (VTT) linear regulator input power supply AUX (TP18) Auxiliary 3.3 V for pull-up (not required) AGND (TP6, TP16) VCC, LDO, VTT and VTTREF common return VIN (TP7) Power supply input voltage positive terminal GND (TP8, TP11, TP13, TP17) Power supply and switching regulator outputs common return V1S8 (TP9) 1.8 V (VDDQ) switching regulator output V1S5 (TP10) 1.5 V switching regulator output V1S05 (TP12) 1.05 V switching regulator output VTT (TP14) LDO (VTT) linear regulator output VTTREF (TP1) Voltage reference (VTTREF) buffer output PG1S8 (TP2) 1.8 V (VDDQ) switching regulator Power Good signal PG1S5 (TP3) 1.5 V switching regulator Power Good signal PG1S05 (TP4) 1.05 V switching regulator Power Good signal |
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