參數(shù)資料
型號(hào): 9TCS1083NLGI8
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 模擬信號(hào)調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, QCC32
封裝: 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32
文件頁數(shù): 27/39頁
文件大?。?/td> 491K
代理商: 9TCS1083NLGI8
9TCS1083
MOBILE ACCESS—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES
IDT MOBILE ACCESS—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES
33
9TCS1083
REV 0.5 100511
b. TACH_S2 - byte[34], bit[7:0] and byte[35], bit[7:3]
The TACH_S1/S2 is set using the following RPM formula:
where: RPM - fan revolution per minute
Fsample - 25kHz sample internal clock sample rate
TACH_Reading - user programmable registers Byte[32]
through Byte[35]
(4) To Set the minimum and maximum fan speed, use
the RPM formula, “Formula 1”.
a. TACH_MIN - byte[31], bit[7:0]
b. TACH_MAX - byte[30, bit[7:0]
(5) To adjust the rate at which the fan speed will
transition from one TACH setting to the other, the RPM
equation, “Formula 1” is again applied to determine the
incremental or decremental fan speed step size.
Tachometer PWM Step Control - byte[36], bit[7:0]
Byte[33],
bit[7:3]
Logic "1" selects Tachometer
Reading
Bit[7]
16
Bit[6]
8
Bit[5]
4
Bit[4]
2
Bit[3]
1
Byte[34], bit[7:0]
Logic "1" selects Tachometer
Reading
Bit[7]
4096
Bit[6]
2048
Bit[5]
1024
Bit[4]
512
Bit[3]
256
Bit[2]
128
Bit[1]
64
Bit[0]
32
Byte[35], bit[7:3]
Logic "1" selects Tachometer
Reading
Bit[7]
16
Bit[6]
8
Bit[5]
4
Bit[4
2
Bit[3]
1
60
_Re
2
sample
TAC H
ading
RPM
F
×
(Formula 1)
Byte[31], bit[7:0]
Logic "1" selects Tachometer
Reading
Bit[7]
512
Bit[6]
256
Bit[5]
128
Bit[4]
64
Bit[3]
32
Bit[2]
16
Bit[1]
8
Bit[0]
4
Byte[30], bit[7:0]
Logic "1" selects Tachometer
Reading
Bit[7]
4096
Bit[6]
2048
Bit[5]
1024
Bit[4]
512
Bit[3]
256
Bit[2]
128
Bit[1]
64
Bit[0]
32
Byte[36], bit[7:0]
Logic "1" selects Tachometer
Reading
Bit[7]
128
Bit[6]
64
Bit[5]
32
Bit[4]
16
Bit[3]
8
Bit[2]
4
Bit[1]
2
Bit[0]
1
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