ADT7467 Analog Devices, Inc., ADT7467 Datasheet - Page 63

• Manufacturer Part Number: ADT7467
• Description: Dbcool Remote Thermal Monitor And Fan Controller
• Manufacturer: Analog Devices, Inc.

Table 23. Register 0x36—Dynamic T
Bit
<0>
<1>
<2>
<3>
<4>
<5>
<6>
<7>
1
This register becomes a read-only register when the Configuration Register 1 lock bit is set to 1. Any subsequent attempts to write to this register fail.
Name
CYR2
V
PHTR1
PHTL
PHTR2
R1T
LT
R2T
CCP
LO
R/W
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
Read/write
Description
MSB of 3-bit Remote 2 cycle value. The other two bits of the code reside in Dynamic T
(Reg. 0x37). These three bits define the delay time, in terms of the number of monitoring cycles, for making
subsequent T
must be found to optimize the response of the fans and the control loop.
V
low limit value (Reg. 0x46), the following occurs:
• Status Bit 1 in Status Register 1 is set.
• SMBALERT is generated if enabled.
• PROCHOT monitoring is disabled.
• Dynamic T
• The device is prevented from entering shutdown.
• Everything is re-enabled once V
PHTR1 = 1 copies the Remote 1 current temperature to the Remote 1 operating point register if THERM is
asserted. The operating point contains the temperature at which THERM is asserted, allowing the system to
run as quietly as possible without affecting system performance.
PHTR1 = 0 ignores THERM assertions on the THERM pin. The Remote 1 operating point register reflects its
programmed value.
PHTL = 1 copies the local channel’s current temperature to the local operating point register if THERM is
asserted. The operating point contains the temperature at which THERM is asserted. This allows the system to
run as quietly as possible without affecting system performance.
PHTL = 0 ignores THERM assertions on the THERM pin. The local temperature operating point register reflects
its programmed value.
PHTR2 = 1 copies the Remote 2 current temperature to the Remote 2 operating point register if THERM is
asserted. The operating point contains the temperature at which THERM is asserted, allowing the system to
run as quietly as possible without affecting system performance.
PHTR2 = 0 ignores THERM assertions on the THERM pin. The Remote 2 operating point register reflects its
programmed value.
R1T = 1 enables dynamic T
adjusted based on the current temperature, operating point, and high and low limits for the zone.
R1T = 0 disables dynamic T
described in the Fan Speed Control section.
LT = 1 enables dynamic T
adjusted based on the current temperature, operating point, and high and low limits for the zone.
LT = 0 disables dynamic T
described in the Fan Speed Control section.
R2T = 1 enables dynamic T
adjusted based on the current temperature, operating point, and high and low limits for the zone.
R2T = 0 disables dynamic T
described in the Fan Speed Control section.
CCP
LO = 1. When the power is supplied from 3.3 V STANDBY and the core voltage (V
MIN
Control Register 1 (Power-On Default = 0x00)
MIN
MIN
control is disabled.
adjustments in the control loop. The system is associated with thermal time constants that
MIN
MIN
MIN
MIN
MIN
MIN
control on the local temperature channel. The chosen T
control on the Remote 1 temperature channel. The chosen T
control. The T
control on the Remote 2 temperature channel. The chosen T
control. The T
control. The T
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CCP
increases above the V
MIN
MIN
MIN
value chosen is not adjusted, and the channel behaves as
value chosen is not adjusted, and the channel behaves as
value chosen is not adjusted, and the channel behaves as
CCP
LO limit.
1
MIN
CCP
MIN
) drops below its V
MIN
MIN
value is dynamically
Control Register 2
value is dynamically
value is dynamically
ADT7467
CCP