The F75334DG is a series of hardware monitoring & intelligent fan controlling IC. The F75334DG integrated Hardware Monitor, PWM Loading Gauge, VID controller and GPIO functions inside. Part of the Hardware Monitor is for system protection including 6 channels voltage monitor, 4 sets dual current sources temperature sensor, 3 sets fan speed sensor and controller. Besides, F75334DG supports AMDSI interface for AMD series CPU temperature reading & Intel PECI/SST interface. PWM Loading Gauge is sensing the PWM signal change of duty cycle to react related functions for over/under-clocking application. VID controller is the dynamic voltage ID controller chip to provide the advanced CPU voltage programming when over/under clocking. The dynamic VID spec. is for new generation Intel/AMD CPU and also compatible to VRM9.0/VRM10.0/VRM10.X /VRM11.0 spec. Additionally, the F75334DG provides easy voltage sensor input/output (VSI/VSO) function to sense Vcore voltage, then output the offset voltage for over/under voltage change use. Otherwise, F75334DG provides 21 GPIO pins for flexible application.
The F75334DG supports three main features for system protection, system over/under-clocking and dynamic voltage ID control. The F75334DG can easily save the total cost and improve system performance. The F75334DG supports 2 wire I2C interface, packaged in 48-pin LQFP green package and powered by 3.3V.
General Functions
- Support 6 channels voltage monitor
- Provide 4 temperature sensors
- Support 3 sets fan control
- Loading gauge for device loading sensing
- Provide VID controller with OTF
- 21 GPIO pins for flexible application
- Support AMDSI & Intel PECI/SST interface for temperature reading.
- Easy voltage sensor I/O (VSI/VSO) for easy over/under voltage change use.
- 2 wire I2C interface
- 3VCC operation and packaged in 48-LQFP green package
Hardware Monitor
- Voltage Monitor
- Provide 2.048V VREF
- Support 6 channels voltage monitor(VCC3 V + VSB3V + 4 Externals)
- Voltage monitor resolution is 8mv per LSB
- Support 8bits high limit and low limit for each voltage channel
- Temperature Monitor
- Support 4 temperature sensor (1 local + 3 remote)
- Remote sensors support 2 types sensor (thermistor and transistor/thermal diode(Default))
- ±1°C accuracy on remote channel (60°C ~ 100°C)
- ±3°C accuracy on local channel (60°C ~ 100°C)
- Support temperature range from -25°C ~ 145°C
- Support high limit for each temperature sensor
- Support OVT( over temperature) limit for each temperature sensor
- Each temperature with hysteresis for high limit and OVT limit ( 0°C~15°C)
- Fan Controller and Monitor
- 1. Support 3 sets fan speed sensor and fan control
- 2. 50K fan speed sampling rate
- 3. Support Intel 4-Fan control mode
(1. Auto RPM Mode 2. Auto Duty Mode(Default) or manual duty 3. Manual RPM)
Loading Gauge
- Provide 1 PWMIN detection pins
- Duty cycle reading resolution is 16bits
- Support 4 duty limit ( 5 segments), and the resolution is 12 bits
- Support 4 hysteresis registers for each limit (± offset)
- Support 3 TURBO# output signals to control CLK Gen.
- Support 1 STOP# output signal to chipset ( Timing flexible)
VID controller
- Support VRM9.0, VRM10.0, VRM10 extend and VRM11.0
- Support 5 offset registers to mapping 5 different loading range
- Support Intel and AMD CPU
- Easy voltage sensor I/O (VSI/VSO) for easy over/under voltage change use.
GPIO
- Support 21 GPIO pins
- Only support level mode GP output control
- GPIO pin status can be read by registers
