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ADT7462 Datasheet(PDF) 13 Page - Analog Devices

Part # ADT7462
Description  Flexible Temperature and Voltage Monitor and System Fan Controller
PDF  92 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADT7462 Datasheet(HTML) 13 Page - Analog Devices

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ADT7462
Rev. 0 | Page 13 of 92
Configuration Option 4
Configuration Option 4 is chosen when the user wants to
monitor temperature, voltages, and fans for Processor 1 in
a dual processor system.
Features of Configuration Option 4 include the following:
One local and two remote temperature channels
Up to four PWM drives and six TACH inputs
Up to eight voltages monitored
+12V
+5V
+3.3V
Two +1.5V
+1.2V (VCCP1)
+0.984V (Mem_VTT)
VBATT
THERM I/O
VRD input
RESET I/O
Figure 7 shows the pin configuration when Configuration
Option 4 is chosen.
PIN 1
INDICATOR
1
TACH1
2
TACH2
3
TACH3
4
TACH4
5
6
7
TACH5
8
TACH6
24
+2.5V
23
VCCP1
22
+12V3
21
+5V
20
SCSI_TERM2
19
+0.9V
18
17
ADT7462
TOP VIEW
(Not to Scale)
VCC
GND
D2–
D2+
Figure 7. Configuration Option 4
Table 9. Configuration Option 4
Pin
Function
Configuration Register
Bit Value
11
TACH1
Pin Configuration Register 1
Bit 4 = 1
21
TACH2
Pin Configuration Register 1
Bit 3 = 1
31
TACH3
Pin Configuration Register 1
Bit 2 = 1
41
TACH4
Pin Configuration Register 1
Bit 1 = 1
7
TACH5
Pin Configuration Register 1
Bit 0 = 1
8
TACH6
Pin Configuration Register 2
Bit 7 = 1
13
PWM4
Pin Configuration Register 2
Bit 6 = 1
15
D1+
Pin Configuration Register 1
Bit 6 = 1
16
D1−
Pin Configuration Register 1
Bit 6 = 1
19
+0.9V
Pin Configuration Register 1
Bit 5 = 0
20
SCSI_TERM2
Pin Configuration Register 1
Bit 5 = 0
21
+5V
Pin Configuration Register 2
Bit 3 = 0
22
+12V3
Pin Configuration Register 2
Bit 2 = 0
23
VCCP1
Pin Configuration Register 2
Bits [1:0] = 00
24
+2.5V
Pin Configuration Register 3
Bits [7:6] = 01
25
VR_HOT1
Pin Configuration Register 3
Bits [5:4] = 1×
26
VBATT
Pin Configuration Register 3
Bits [3:2] = 00
27
FAN2MAX
Pin Configuration Register 3
Bit 1 = 0
281, 2
THERM1/
+1.5V
Pin Configuration Register 4
See
Table 51
292
THERM2/
+1.5V
Pin Configuration Register 4
See
Table 51
311
PWM1
Pin Configuration Register 4
Bit 3 = 1
321
PWM2
Pin Configuration Register 4
Bit 2 = 1
1 If VIDs are selected, these pins are configured as VIDs. To enable VIDs, set
Bit 7 of Pin Configuration Register 1 (0x01) = 1.
2 It is not possible to monitor +1.5V monitoring on Pin 29 and THERM1 on
Pin 28. Pin 28 and Pin 29 must BOTH be configured as either +1.5V moni-
toring or as THERM I/O (see Table 51).



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