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参数资料
| 型号： | ADM1033 |
| 厂商： | ANALOG DEVICES INC |
| 元件分类： | 模拟信号调理 |
| 英文描述： | Thermal Monitor and Fan Speed (RPM) Controller |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO16 |
| 封装： | QSOP-16 |
| 文件页数： | 11/40页 |
| 文件大小： | 1164K |
| 代理商： | ADM1033 |
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ADM1033
Table 4. Internal Register Descriptions
Register
Configuration
Conversion Rate
Address Pointer
Rev. 0 | Page 11 of 40
Description
Provides control and configuration of various functions on the device.
Determines the number of measurements per second completed by the ADM1033.
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.
Provides the status of each limit comparison.
Allows the option to mask ALERTs due to particular out-of-limit conditions.
Stores the results of temperature and fan speed measurements, along with their limit values.
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.
Contains the temperature value at which THERM is asserted and determines the level of hysteresis.
Status
Interrupt Mask
Value and Limit
Offset
THERM Limit and
Hysteresis
Look-Up Table
THERM % Ontime and
THERM % Limit
Used to program the look-up table for the fan-speed-to-temperature profile.
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)
N/A
0.8125
0.6875
0.5625
0.4375
0.3125
0.1875
N/A
R1 (k)
0
18
22
12
15
47
82
O/C
R2 (k)
O/C
82
47
15
12
22
18
0
Actual R2/(R1 + R2)
1
0.82
0.6812
0.5556
0.4444
0.3188
0.18
0
Error (%)
0
+0.75
0.63
0.69
+0.69
+0.63
0.75
0
SMBus Mode
ARP
1
ARP
1
ARP
1
ARP
1
FD
1
FD
1
FD
1
FD
1
SMBus Address
N/A
N/A
N/A
N/A
0x53
0x52
0x51
0x50
UDID LLL
111
110
101
100
N/A
N/A
N/A
N/A
1
FD denotes fixed-and-discoverable mode, ARP denotes ARP-capable mode.
Table 6. UDID Values
Bit No.
<127:120>
Name
Device Capabilities
Function
Describes the ADM1033’s capabilities (for instance, that it supports PEC
and uses a random number address device)
UDID version number (Version 1) and silicon revision identification
Vendor ID number, assigned by the SBS Implementer’s Forum or the
PCI SIG
Device ID
Value
11000001
<1119:112>
<111:96>
Version/Revision:
Vendor ID
00001010
00010001
11010100
00010000
00110011
00000000
00000100
00000000
00000000
00000000
00000000
00000000
00000LLL
xxxxxxxx
xxxxxxxx
<95:80>
Device ID
<79:64>
Interface
Identifies the protocol layer interfaces supported by the ADM1033. This
represents SMBus 2.0 as the Interface version.
Subsystem Vendor ID = 0 (subsystem fields are unsupported)
<63:48>
Subsystem Vendor ID
<47:32>
Subsystem Device ID
Subsystem Device ID = 0 (subsystem fields are unsupported)
<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.
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