Samsung SCX-5530FN/XAZ Service Manual page 42

System Overview
Items
RSH
Engine Controller
APC
I2C Controller
RTC
PLL
Service Manual
3-24
Specification
Fully Hardware Rotator/Scaler/Halftoner support
- LSU Interface unit, contained APC function.
- Step Motor: 4 Phase
- PWM: 8 Channels
- ADC: 8 Channels
- BLDC clock support.
DAC(2 ea)
I2C bus(SM bus) Slave Device Support (I2C Version 2.1)
RTC Core Voltage: 3V
2 PLL (MAIN / (H)PVC )
Remark
Samsung Electronics