參數(shù)資料
型號(hào)： 9TCS1085NLGI
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(yè)數(shù)： 21/39頁(yè)
文件大小： 485K
代理商： 9TCS1085NLGI
9TCS1085
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
28
9TCS1085
REV 0.5 100511
(2) Critical Thermal Warning Temperature Hysteresis
(default 4°C)
Critical Thermal Warning Status
When a critical warning is activated, a status indicator bit is
also set. Register byte[14], bit[2:0] will be set depending on
which channel had the critical event. Bit[2] is for channel 1,
bit[1] is for channel 2, and bit[0] is for the internal diode.
Critical Thermal Warning THERM# Pin
The critical thermal warnings are sent to the THERM# pin
and requires a system register write to byte[15], bit[7] to
reset. This fault clear I2C write will also clear the
temperature threshold alerts
Active/Standby Mode
The thermal sensor has two modes in the temperature
conversion process:
(1) Active mode – In this mode the ADC will have a
selectable conversion rate for the temperature sensing.
(2) Standby mode – The system will command via I2C the
9TCS1085 to sample the temperature sensors. Once the
temperature reading from the ADC is updated, the
temperature sensor will be on stand-by awaiting the next
system request.
Register byte[15], bit[6] controls whether the thermal sensor
is in active or standby mode.
The conversion rate programmable register detail is as
follows:
* Valid when only one temperature sensor channel is used.
** Valid when the number of temperature sensor channel is
less than three.
The thermal sensor architecture has dynamic averaging to
smooth out the temperature conversion readings. To select
the number of temperature reading averages requires the
dynamic averaging function to be enabled, register byte[15],
bit[5]. The number of averages is then selected as follows:
Byte[12], Bit[4:0]
Temperature
Bit[4]
16°C
Bit[3]
8°C
Bit[2] (default)
4°C
Bit[1]
2°C
Bit[0]
1°C
Byte[17], Bit[4:1]
Conversion Rate
[0000]
16/sec *
[0001]
8/sec **
[0010] (default)
4/sec
[0011]
2/sec
[0100]
1/sec
[0101]
1/2 sec
[0110]
1/4 sec
[0111]
1/8 sec
[1000]
1/16 sec
[1001]
1/32 sec
[1010]
1/64 sec
Byte[6], Bit[1:0]
Average the ADC Temperature
[00]
1
[01]
4
[10]
8
[11]
16
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