ADT7473 Analog Devices, Inc., ADT7473 Datasheet - Page 65

• Manufacturer Part Number: ADT7473
• Description: Dbcool Remote Thermal Monitor And Fan Controller
• Manufacturer: Analog Devices, Inc.

Table 29. Voltage Limit Registers
Reg
0x46
0x47
0x48
0x49
1
2
Tab
Regist
0x4E
0x4F
0x50
0x51
0x52
0x53
1
2
Table
Regist
0x54
0x55
0x56
0x57
0x58
0x59
0x5A
0x5B
1
Table 32. Register 0x55—TACH1 Minimum High Byte (Power-On Default = 0xFF)
Bit
[4:0]
[7:5]
Table 33. PWM Configuration Registers
Register Address
0x5C
0x5D
0x5E
1
Setting the Configuration Regist
High Limits:
l
Exceeding any of the
bit has n
High Limits: An interrupt is generated when a valu
l
Exceeding any of the TACH limit registers by 1 indicates that the fan is running slowly or has stalled. The appropriate status bit is set in Interrupt Status Register 2 to
indicate the fan failure. Setting the Configuration Register 1 lock bit has no effect on these registers.
These registers become read-only when the Configuration Register 1 lock bit is set. Any further attempts to write to these registers have no effect.
ow limit ( comparis
ow limit ( comparis
ister
le 30
31. Fan Tac
er A
er Address
o e
Name
Reserved
SCADC
. Temp
≤
≤
Address
ffect on th
ddre
An interrupt is gene
ss
erature Lim
se
on)
on)
ho
ese
tempera
Read-only
R/W
R/W
.
.
meter
registe
er 1 lock bit has no effect on th
ture limits by 1°
rated when a value exceeds it
rs.
Limit Registers
it Registers
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
These bits are reserved when Bit 6 of Configuration Register 2 (0x73) is set (single-channel ADC mode).
Otherwise, these bits represent Bits [4:0] of the TACH1 minimum high byte.
When Bit 6 of Configuration Register 2 (0x73) is set (single-channel ADC mode), these bits are used to
select the only channel from which the ADC makes measurements. Otherwise, these bits represent
Bits [7:5] of the TACH1 minimum high byte.
1
R/W
R/W
R/W
R/W
C causes the appropriate status bit to be set in the interrupt status register. Setting the Configuration Register 1 lock
1
e exceeds its
1
1
Description
Remote 1 temperature low limit.
Remote 1 temperature high limit.
Local temperature low limit.
Local temperature high limit.
Remote 2 temperature low limit.
Remote 2 temperature high limit.
Description
TACH1 minimum low byte.
TACH1 minimum high byte/single-channel ADC channel select.
TACH2 minimum low byte.
TACH2 minimum high byte.
TACH3 minimum low byte.
TACH3 minimum high byte.
TACH4 minimum low byte.
TACH4 minimum high byte.
s high limit (> comparison). Low Limits: An interrupt is generated when a value is equal to or below its
ese registers.
high limit (> comparison). Low Limits: An interrupt is generated when a value is equal to or below its
Description
V
V
V
V
Description
PWM1 configuration.
PWM2 configuration.
PWM3 configuration.
CCP
CCP
CC
CC
low limit.
high limit.
low limit.
high limit.
Rev. A | Page 65 of 76
2
2
Power-On Default
0x82
0x82
0x82
Power-On Default
0x00
0xFF
0x00
0xFF
Power-On Default
Power-On Default
0xFF
0x01
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0xFF
0x01
0x01
ADT7473