NCT6627UD Nuvoton Technology Corporation of America, NCT6627UD Datasheet - Page 68

• Manufacturer Part Number: NCT6627UD
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of NCT6627UD

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Attribute:
Size:
The register is meaningful only when SYSFANOUT is programmed for PWM output (i.e., Bank0 Index 04h, bit 0 is
0).
Attribute:
Size:
DEFAULT
DEFAULT
PWM Output
(Bank 0, Index
FUNCTION MODE
8.3
8.4
NAME
NAME
BIT
BIT
7-0
6-0
BIT
7
BIT
SYSFANOUT PWM Output Frequency Configuration Register – Index 00h (Bank 0)
SYSFANOUT Output Value Select Register – Index 01h (Bank 0)
Data to be read from or to be written to Value RAM and Register.
PWM_CLK_SEL1 (SYSFANOUT PWM Input Clock Source Select). This bit selects
clock source for PWM output frequency.
0: The clock source is 24 MHz.
1: The clock source is 180 KHz.
PWM_SCALE1 (SYSFANOUT PWM Pre-Scale Divider). The clock source for PWM
output is divided by this seven-bit value to calculate the actual PWM output frequency.
The maximum value of the divider is 127 (7Fh), and it should not be set to 0.
PWM_CLK_SEL1
7
7
0
DESCRIPTION
6
Read/Write
8 bits
Read/Write
8 bits
6
0
PWM output frequency
The PWM duty cycle is equal to this 8-bit value, divided by
255, times 100%. FFh creates a duty cycle of 100%, and 00h
7
5
Strap by FAN_SET (Pin 119)
5
0
6
DESCRIPTION
DESCRIPTION
SYSFANOUT Value
4
4
0
5
PWM_SCALE1
=
-59-
3
Pre_Scale
4
W83627UHG/NCT6627UD
3
0
Input
3
Publication Release Date: October 26, 2010
Clock
2
Divider
2
1
2
∗
1
256
1
0
1
1
0
0
0
0
Revision 1.7