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| 型号： | ADM1034ARQZ-REEL |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封装： | LEAD FREE, MO-137AB, QSOP-16 |
| 文件页数： | 3/40页 |
| 文件大小： | 1318K |
| 代理商： | ADM1034ARQZ-REEL |
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ADM1034
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 ADM1034.
Address Pointer
Contains the address that selects one of the other internal registers. When writing to the ADM1034, the
first byte of data is always a register address, 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 indicates 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
Actual R2/(R1 + R2)
Error %
SMBus Ver
SMBus Address
UDID LLL
N/A
0
O/C
1
0
N/A
111
0.8125
18
82
0.82
+0.75
N/A
110
0.6875
22
47
0.6812
0.63
N/A
101
0.5625
12
15
0.5556
0.69
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 ADM1034’s capabilities (for instance, that it supports PEC and uses a
random number address device).
11000001
<119:112>
Version/Revision
UDID version number (Version 1) and silicon revision identification
00001010
<111:96>
Vendor ID
Analog Devices vendor ID number, as assigned by the SBS Implementer’s Forum or
the PCI SIG.
00010001
11010100
<95:80>
Device ID
Device ID.
00010000
00110100
<79:64>
Interface
Identifies the protocol layer interfaces supported by the ADM1034. 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 LOCATION information (LL) and a 16-bit
random number (x). See Table 5 for information on setting the LLL bits.
00000000
00000LLL
xxxxxxxx
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