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ADT7462ACPZ-REEL Datasheet(PDF) 11 Page - ON Semiconductor

Part # ADT7462ACPZ-REEL
Description  Flexible Temperature, Voltage Monitor System Fan Controller
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

ADT7462ACPZ-REEL Datasheet(HTML) 11 Page - ON Semiconductor

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11
Configuration Option 2
Configuration Option 2 is used for thermal monitoring
and fan control for Processor 1 and Processor 2 in a dual
processor system. It can also monitor one set of VIDs, if
required. Features of Configuration Option 2 include the
following:
One Local and Three Remote Thermal Channels
Up to Four PWM Drives and Up to Eight TACH Inputs
(VID Pins and TACHs/PWMs are Muxed Together)
Two THERM I/Os
Two VRD Inputs
RESET I/O
Two VCCP Voltage Monitoring Channels
Figure 20 shows the pin configuration when Configuration
Option 2 is chosen.
Figure 20. Configuration Option 2
PIN 1
INDICATOR
1
TACH1
2
TACH2
3
TACH3
4
TACH4
5
VCC
6
GND
7
TACH5
8
TACH6
24
VCCP2
23
VCCP1
22
TACH8
21
TACH7
20
D3–
19
D3+
18
D2–
17
D2+
ADT7462
TOP VIEW
(Not to Scale)
Table 7. CONFIGURATION OPTION 2
Pin
Function
Configuration Register
Bit Value
1
TACH1
Pin Configuration Reg 1
Bit 4 = 1
2
TACH2
Pin Configuration Reg 1
Bit 3 = 1
3
TACH3
Pin Configuration Reg 1
Bit 2 = 1
4
TACH4
Pin Configuration Reg 1
Bit 1 = 1
7
TACH5
Pin Configuration Reg 1
Bit 0 = 1
8
TACH6
Pin Configuration Reg 2
Bit 7 = 1
13
PWM4
Pin Configuration Reg 2
Bit 6 = 1
15
D1+
Pin Configuration Reg 1
Bit 6 = 1
16
D1−
Pin Configuration Reg 1
Bit 6 = 1
19
D3+
Pin Configuration Reg 1
Bit 5 = 1
20
D3−
Pin Configuration Reg 1
Bit 5 = 1
21
TACH7
Pin Configuration Reg 2
Bit 3 = 1
22
TACH8
Pin Configuration Reg 2
Bit 2 = 1
23
VCCP1
Pin Configuration Reg 2
Bits [1:0] = 00
24
VCCP2
Pin Configuration Reg 3
Bits [7:6] = 00
25
VR_HOT1
Pin Configuration Reg 3
Bits [5:4] = 1
×
26
VR_HOT2
Pin Configuration Reg 3
Bits [3:2] = 1
×
27
FAN2MAX
Pin Configuration Reg 3
Bit 1 = 0
28
THERM1
Pin Configuration Reg 4
Bits [7:6] = 1
×
29
THERM2
Pin Configuration Reg 4
Bits [5:4] = 1
×
31
PWM1
Pin Configuration Reg 4
Bit 3 = 1
32
PWM2
Pin Configuration Reg 4
Bit 2 = 1
†If VIDs are selected, these pins are configured as VIDs. To enable
VIDs, set Bit 7 of Pin Configuration Register 1 (0x10) = 1.


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