AIWA AM-HX50 Service Manual - Page 25

Pin No. 42 43 44 45 46 47 48 49 50 51 52 53 54 55-57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 Pin Name VCC2 IN1F IN1R IN2F IN2R EXTCLK C1P C1M C2P C2M VG STALL STHB S1-S3 BEMFU BEMFV BEMFW SLCOM SLVM1 NC SLUOUT SLPG1 NC SLVOUT NC SLVM2 SLWOUT SLPG2 NC PW1VM NC PW1OUT NC PWPG NC PW2OUT PW2VM I/O Description - The power supply terminal 2 for small signal circuit (Bipolar). I H bridge 1 forward input. I H bridge 1 reverse input. I H bridge 2 forward input. I H bridge 2 reverse input. I Sync clock input terminal. - CHARGEPUMP capacitor 1 connection terminal +. - CHARGEPUMP capacitor 1 connection terminal -. - CHARGEPUMP capacitor 2 connection terminal +. - CHARGEPUMP capacitor 2 connection terminal -. O CHARGEPUMP output. I Standby terminal. O H1 and H2 bridge mute terminal. I Stepping decoder input (1 to 3). O STEP detection comparator output (U-phase). O STEP detection comparator output (V-phase). O STEP detection comparator output (W-phase). I STEP motor coil center point input terminal. - Stepping power block power supply 1. - Not used. O Stepping motor output (U-phase). - Stepping power block GND1. - Not used. O Stepping motor output (V-phase). - Not used. - Stepping power block power supply 2. O Stepping motor output (W-phase). - Stepping power block GND2. - Not used. - Half bridge 1 power block power supply. - Not used. O Half bridge 1 output. - Not used. - Half bridge power block GND. - Not used. O Half bridge 2 GND. - Half bridge 2 power block power supply. 29