W83637HF Datasheet, PDF (53/149 Pages) Winbond – LPC I/O

W83637HF
FAN IN/OUT and BEEP Control Register- Index 4Dh
Register Location:
4Dh
Power on Default Value
15h
Attribute:
Read/Write
Size:
8 bits
7 6 5432 1 0
FANINC1
FANOPV1
FANINC2
FANOPV2
FANINC3
FANOPV3
Reserved
Reserved
Bit 7~6: Reserved.
Bit 5: FAN 3 output value if FANINC3 sets to 0. Write 1, pin5 (DSB#/FANIN3) generates a logic high
signal. Write 0, pin 5 generates a logic low signal. This bit is default 0. This bit is only valid when
pin5 is set to FANIN3 function.
Bit 4: FAN 3 Input Control. Set to 1, pin 5(DSB#/FANIN3) acts as FAN tachmeter input, which is default
value. Set to 0, this pin 5 acts as FAN control signal and the output value of FAN control is set
by this register bit 5. This bit is only valid when pin5 is set to FANIN3 function.
Bit 3: FAN 2 output value if FANINC2 sets to 0. Write 1, then pin 115 always generate logic high
signal. Write 0, pin 115 always generates logic low signal. This bit default 0.
Bit 2: FAN 2 Input Control. Set to 1, pin 112 acts as FAN clock input, which is default value. Set to 0,
this pin 112 acts as FAN control signal and the output value of FAN control is set by this register
bit 3.
Bit 1: FAN 1 output value if FANINC1 sets to 0. Write 1, then pin 116 always generate logic high
signal. Write 0, pin 116 always generates logic low signal. This bit default 0.
Bit 0: FAN 1 Input Control. Set to 1, pin 113 acts as FAN clock input, which is default value. Set to 0,
this pin 113 acts as FAN control signal and the output value of FAN control is set by this register
bit 1.
- 48 -
Publication Release Date: June 25, 2003
Revision 1.3