W83627UHG Nuvoton Technology Corporation of America, W83627UHG Datasheet - Page 67

• Manufacturer Part Number: W83627UHG
• Description: IC I/O CONTROLLER 128-QFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of W83627UHG

• Applications: PC's, PDA's
• Interface: LPC
• Voltage - Supply: 3.3V, 5V
• Package / Case: 128-XFQFN
• Mounting Type: Surface Mount
• Pin Count: 128
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.3
Attribute:
Size:
The register is meaningful only when SYSFANOUT is programmed for PWM output (i.e., Bank0 Index
04h, bit 0 is 0).
8.4
Attribute:
Size:
DEFAULT
DEFAULT
PWM Output
(Bank 0, Index
04h, bit 0 is 0)
DC Voltage Output
(Bank 0, Index
04h, bit 0 is 1)
FUNCTION MODE
NAME
NAME
BIT
6-0
7
BIT
BIT
SYSFANOUT PWM Output Frequency Configuration Register - Index 00h
(Bank 0)
SYSFANOUT Output Value Select Register - Index 01h (Bank 0)
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
DESCRIPTION
DEFAULT
DEFAULT
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
creates a duty cycle of 0%.
Strap by FAN_SET (Pin 119)
SYSFANOUT voltage control. The output
voltage
equation:
OUTPUT Voltage =
Strap by FAN_SET (Pin 119)
7
5
Strap by FAN_SET (Pin 119)
5
0
6
is
DESCRIPTION
SYSFANOUT Value
-56-
4
calculated
4
0
5
AVCC
PWM_SCALE1
=
3
Pre_Scale
4
according
3
0
*
Input
FANOUT
3
64
Clock
2
Divider
2
1
to
W83627UHG
2
this
∗
1
256
1
0
1
Reserved
1
0
0
0
0