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參數(shù)資料
| 型號(hào)： | ADM1033ARQ-REEL |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 8BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | MO-137AB, QSOP-16 |
| 文件頁數(shù)： | 3/39頁 |
| 文件大小： | 819K |
| 代理商： | ADM1033ARQ-REEL |
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ADM1033
Rev. 0 | Page 11 of 40
Table 4. Internal Register Descriptions
Register
Description
Configuration
Provides control and configuration of various functions on the device.
Conversion Rate
Determines the number of measurements per second completed by the ADM1033.
Address Pointer
Contains the address that selects one of the other internal registers. When writing to the ADM1033, the first byte
of data is always a register address, which is written to the address pointer register.
Status
Provides the status of each limit comparison.
Interrupt Mask
Allows the option to mask ALERTs due to particular out-of-limit conditions.
Value and Limit
Stores the results of temperature and fan speed measurements, along with their limit values.
Offset
Allows the local and remote temperature channel readings to be offset by a twos complement value written to
them. These values are automatically added to the temperature values (or subtracted from them if negative). This
allows the systems designer to optimize the system, if required, by adding or subtracting up to 15.875°C from a
temperature reading.
THERM Limit and
Hysteresis
Contains the temperature value at which THERM is asserted and determines the level of hysteresis.
Look-Up Table
Used to program the look-up table for the fan-speed-to-temperature profile.
THERM % Ontime and
THERM % Limit
Reflects the state of the THERM input and monitors the duration of the assertion time of the signal as a
percentage of a time window. The user can program the length of the time window.
Table 5. Resistor Ratios for Setting LOCATION Bits
Ideal Ratio R2/(R1 + R2)
R1 (k)
R2 (k)
Actual R2/(R1 + R2)
Error (%)
SMBus Mode
SMBus Address
UDID LLL
N/A
0
O/C
1
0
ARP1
N/A
111
0.8125
18
82
0.82
+0.75
ARP1
N/A
110
0.6875
22
47
0.6812
0.63
ARP
N/A
101
0.5625
12
15
0.5556
0.69
ARP1
N/A
100
0.4375
15
12
0.4444
+0.69
FD1
0x53
N/A
0.3125
47
22
0.3188
+0.63
FD1
0x52
N/A
0.1875
82
18
0.18
0.75
FD1
0x51
N/A
O/C
0
FD1
0x50
N/A
1
FD denotes fixed-and-discoverable mode, ARP denotes ARP-capable mode.
Table 6. UDID Values
Bit No.
Name
Function
Value
<127:120>
Device Capabilities
Describes the ADM1033’s capabilities (for instance, that it supports PEC
and uses a random number address device)
11000001
<1119:112>
Version/Revision:
UDID version number (Version 1) and silicon revision identification
00001010
<111:96>
Vendor ID
Vendor ID number, assigned by the SBS Implementer’s Forum or the
PCI SIG
00010001
11010100
<95:80>
Device ID
00010000
00110011
<79:64>
Interface
Identifies the protocol layer interfaces supported by the ADM1033. This
represents SMBus 2.0 as the Interface version.
00000000
00000100
<63:48>
Subsystem Vendor ID
Subsystem Vendor ID = 0 (subsystem fields are unsupported)
00000000
<47:32>
Subsystem Device ID
Subsystem Device ID = 0 (subsystem fields are unsupported)
00000000
<31:0>
Vendor-Specific ID
A unique number per device. Contains the LOCATION Information (LLL)
and a 16-bit random number (x). See Table 5 for information on setting
the LLL bits.
00000000
00000LLL
xxxxxxxx
Rev. 1 | Page 11 of 39 | www.onsemi.com
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