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參數資料
型號: ADM1026JST-REEL
廠商: ANALOG DEVICES INC
元件分類: 電源管理
英文描述: Complete Thermal and System Management Controller
中文描述: 4-CHANNEL POWER SUPPLY SUPPORT CKT, PQFP48
封裝: 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, MS-026BBC, LQFP-48
文件頁數: 33/56頁
文件大小: 634K
代理商: ADM1026JST-REEL
ADM1026
Figure 60 shows the effect of one input being stuck high. Taking
GPIO12 high should take the output high. However, the next
input up the tree, GPIO11, is already high, so the output
immediately goes low again, causing a missing pulse in the
output pattern.
Rev. A | Page 33 of 56
GPIO16
GPIO15
GPIO14
GPIO13
GPIO12
GPIO11
GPIO10
GPIO9
GPIO8
FAN0
FAN1
NTESTOUT
0
Figure 60. NAND Tree Test with One Input Stuck High
A similar effect occurs if two adjacent inputs are shorted
together. The example in Figure 61 assumes that the current
sink capability of the circuit driving the inputs is considerably
higher than the source capability, so the inputs are low if either
is low, but high only if both are high.
When GPIO12 goes high the output should go high. But
because GPIO12 and GPIO11 are shorted, they both go high
together, causing a missing pulse in the output pattern.
GPIO16
GPIO15
GPIO14
GPIO13
GPIO12
GPIO11
GPIO10
GPIO9
GPIO8
FAN0
FAN1
NTESTOUT
0
Figure 61. NAND Tree Test with Two Inputs Shorted
USING THE ADM1026
When power is first applied, the ADM1026 performs a power-
on reset on all its registers (not EEPROM), which sets them to
default conditions as shown in Table 12. In particular, note that
all GPIO pins are configured as inputs to avoid possible
conflicts with circuits trying to drive these pins.
The ADM1026 can also be initialized at any time by writing a
1 to Bit 7 of Configuration Register 1, which sets some registers
to their default power-on conditions. This bit should be cleared
by writing a 0 to it.
After power-on, the ADM1026 must be configured to the user’s
specific requirements. This consists of
Writing values to the limit registers.
Configuring Pins 3 to 6, and 9 to 12 as fan inputs or GPIO,
using Configuration Register 2 (Address 01h).
Setting the fan divisors using the fan divisor registers
(Addresses 02h and 03h).
Configuring the GPIO pins for input/output polarity, using
GPIO Configuration Registers 1 to 4 (Addresses 08h to
0Bh) and Bits 6 and 7 of Configuration
Register 3.
Setting mask bits in Mask Registers 1 to 6 (Addresses 18h
to 1Dh) for any inputs that are to be masked out.
Setting up Configuration Registers 1 and 3, as described in
Table 9 and Table 10.
Table 9. Configuration Register 1
Bit
Description
0
Controls the monitoring loop of the ADM1026.
Setting Bit 0 low stops the monitoring loop and puts
the ADM1026 into low power mode and reduces
power consumption. Serial bus communication is still
possible with any register in the ADM1026 while in
low power mode. Setting bit 0 high starts the
monitoring loop.
1
Enables or disables the INT interrupt output. Setting
Bit 1 high enables the INT output, setting Bit 1 low
disables the output.
2
Used to clear the INT interrupt output when set high.
GPIO pins and interrupt status register contents are
not affected.
3
Configures Pins 27 and 28 as the second external
temperature channel when 0, and as A
IN8
and A
IN9
when set to 1.
4
Enables the THERM output when set to 1.
5
Enables automatic fan speed control on the DAC
output when set to 1.
6
Enables automatic fan speed control on the PWM
output when set to 1.
7
Performs a soft reset when set to 1.
Table 10. Configuration Register 3
Bit
Description
0
Configures Pin 42 as GPIO when set to 1 or as THERM
when cleared to 0.
1
Clears the CI latch when set to 1. Thereafter, a 0 must
be written to allow subsequent CI detection.
2
Selects V
REF
as 2.5 V when set to 1 or as 1.82 V when
cleared to 0.
3–5
Unused.
6, 7
Set up GPIO16 for direction and polarity.
相關PDF資料
PDF描述
ADM1026JSTZ-REEL Complete Thermal and System Management Controller
ADM1026JST Circular Connector; No. of Contacts:28; Series:LJT06R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:19; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:19-28
ADM1030ARQ Intelligent Temperature Monitor and PWM Fan Controller
ADM1030 Circular Connector; No. of Contacts:66; Series:LJT06R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:19; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:19-35
ADM1033 Thermal Monitor and Fan Speed (RPM) Controller
相關代理商/技術參數
參數描述
ADM1026JST-REEL7 功能描述:IC CNTRL SYS REF/EEPROM 48LQFP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標準包裝:1 系列:- 功能:溫度監控系統(傳感器) 傳感器類型:內部和外部 感應溫度:-40°C ~ 125°C,外部傳感器 精確度:±2.5°C 本地(最大值),±5°C 遠程(最大值) 拓撲:ADC,比較器,寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應商設備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
ADM1026JSTZ 功能描述:PMIC 解決方案 HI INT SYS MONITR IC RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
ADM1026JSTZ-R7 功能描述:PMIC 解決方案 HI INT SYS MONITR IC RoHS:否 制造商:Texas Instruments 安裝風格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
ADM1026JSTZ-REEL 功能描述:板上安裝溫度傳感器 HI INT SYS MONITR IC RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor
ADM1026JSTZ-REEL7 制造商:Analog Devices 功能描述:IC SYSTEM MONITOR 制造商:ON Semiconductor 功能描述:IC SYSTEM MONITOR
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