参数资料
型号: W83L786NR
厂商: WINBOND ELECTRONICS CORP
元件分类: 通信及网络
英文描述: SPECIALTY TELECOM CIRCUIT, PDSO20
封装: 0.209 INCH, SSOP-20
文件页数: 11/50页
文件大小: 998K
代理商: W83L786NR
W83L786NR/ W83L786NG
- 14 -
7.6.2
Fan Speed Control
The W83L786NR/NG provides two sets for PWM/DC fan speed control. The duty cycle of PWM or the
output voltage of DC can be programmed by a 4-bit register. There are four mode to control fan speed
which are set by programming CR80 [3:2] and CR [5:4], and default are FAN_SET mode.
7.6.2.1. Default Fan Speed Setting
There is a pin to set the default value for fan speed control by adjusting external serial resistors. After
power up, the default value will be stored in CR90 (FAN_SET mode). The figure and table are shown
below.
Ra
Rb
F AN_ S E T
VC C
SECTION
FAN SPEED RATE
RA
RB
3
100﹪
9.1K
×
2
81﹪
4.7K
9.1K
1
62﹪
9.1K
4.7K
0
43﹪
×
9.1K
Figure 8 OFFSET Setting
7.6.2.2. PWM Mode
%
100
16
Value
Register
bit
-
4
Programmed
(%)
cycle
Duty
×
=
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