ADT7470 Analog Devices, Inc., ADT7470 Datasheet - Page 36

• Manufacturer Part Number: ADT7470
• Description: Temperature Sensor Hub And Fan Controller
• Manufacturer: Analog Devices, Inc.

ADT7470
Table 48. Register 0x7B. TMP05 COEF Option 3 (Power-On Default = 0x00)
Bit Name
<7:5> TMP05_OFFS
<2:0> AFC_Spin_Up
Table 49. Register 0x7C. TMP05 Zone Select 1 (Power-On Default = 0x00)
Bit Name
<7:4> zone_fan1<3:0>
<3:0> zone_fan2<3:0>
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
These bits contain Bits 2:0 of the optional TMP05 offset coefficient.
These bits control the AFC fan spin-up.
Description
Programming
000
001
010
011
100
101
110
111
Description
These bits determine which temperature zone controls Fan 1.
zone_fan1<3:0>
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
These bits determine which temperature zone controls Fan 2.
zone_fan2<3:0>
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
Rev. B | Page 36 of 40
Setting
No Start Up (Default)
100 ms
250 ms
400 ms
667 ms
1 s
2 s
4 s
Description
max_temperature from Register 0x78 controls Fan 1.
Temperature 1 from Register 0x20 controls Fan 1.
Temperature 2 from Register 0x21 controls Fan 1.
Temperature 3 from Register 0x22 controls Fan 1.
Temperature 4 from Register 0x23 controls Fan 1.
Temperature 5 from Register 0x24 controls Fan 1.
Temperature 6 from Register 0x25 controls Fan 1.
Temperature 7 from Register 0x26 controls Fan 1.
Temperature 8 from Register 0x27 controls Fan 1.
Temperature 9 from Register 0x28 controls Fan 1.
Temperature 10 from Register 0x29 controls Fan 1.
Description
max_temperature from Register 0x78 controls Fan 2.
Temperature 1 from Register 0x20 controls Fan 2.
Temperature 2 from Register 0x21 controls Fan 2.
Temperature 3 from Register 0x22 controls Fan 2.
Temperature 4 from Register 0x23 controls Fan 2.
Temperature 5 from Register 0x24 controls Fan 2.
Temperature 6 from Register 0x25 controls Fan 2.
Temperature 7 from Register 0x26 controls Fan 2.
Temperature 8 from Register 0x27 controls Fan 2.
Temperature 9 from Register 0x28 controls Fan 2.
Temperature 10 from Register 0x29 controls Fan 2.