参数资料
| 型号： | ADT7468ZEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 65/81页 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR ADT7468 |
| 标准包装： | 1 |
| 其它名称： | EVAL-ADT7468EB EVAL-ADT7468EB-ND |
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ADT7468
Table 23. Register 0x36—Dynamic T MIN Control Register 1 (Power-On Default = 0x00) 1
Bit
<0>
Name
CYR2
R/W
Read/write
Description
MSB of 3-bit remote 2 cycle value. The other two bits of the code reside in Dynamic T MIN Control Register 2
(Reg. 0x37). These three bits define the delay time between making subsequent T MIN adjustments in the
control loop, in terms of the number of monitoring cycles. The system has associated thermal time constants
that need to be found to optimize the response of fans and the control loop.
<1>
V CCP LO
Read/write
V CCP LO = 1. When the power is supplied from 3.3 V STANDBY and the core voltage (V CCP ) drops below its V CCP
low limit value (Reg. 0x46), the following occurs:
? Status Bit 1 in Status Register 1 is set.
? SMBALER T is generated, if enabled.
? PROCHOT monitoring is disabled.
? Dynamic T MIN control is disabled.
? The device is prevented from entering shutdown.
? Everything is re-enabled once V CCP increases above the V CCP low limit.
<2>
PHTR1
Read/write
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, which allows the system
to run as quietly as possible without affecting system performance.
PHTR1 = 0 ignores any THERM assertions on the THERM pin. The Remote 1 operating point register reflects its
programmed value.
<3>
PHTL
Read/write
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, which allows the system
to run as quietly as possible without affecting system performance.
PHTL = 0 ignores any THERM assertions on the THERM pin. The local operating temperature point register
reflects its programmed value.
<4>
PHTR2
Read/write
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. This allows the system to
run as quietly as possible without affecting system performance.
PHTR2 = 0 ignores any THERM assertions on the THERM pin. The Remote 2 operating point register reflects its
programmed value.
<5>
R1T
Read/write
R1T = 1 enables dynamic T MIN control on the Remote 1 temperature channel. The chosen T MIN value is
dynamically adjusted based on the current temperature, operating point, and high and low limits for this
zone.
R1T = 0 disables dynamic T MIN control. The T MIN value chosen is not adjusted, and the channel behaves as
described in the Fan Speed Control section.
<6>
LT
Read/write
LT=1 enables dynamic T MIN control on the local temperature channel. The chosen T MIN value is dynamically
adjusted based on the current temperature, operating point, and high and low limits for this zone.
LT = 0 disables dynamic T MIN control. The T MIN value chosen is not adjusted, and the channel behaves as
described in the Fan Speed Control section.
<7>
R2T
Read/write
R2T = 1 enables dynamic T MIN control on the Remote 2 temperature channel. The chosen T MIN value is
dynamically adjusted based on the current temperature, operating point, and high and low limits for this
zone.
R2T = 0 disables dynamic T MIN control. The T MIN value chosen is not adjusted, and the channel behaves as
described in the Fan Speed Control section.
1
This register becomes read-only when the Configuration Register 1 lock bit is set to 1. Any subsequent attempts to write to this register fail.
Rev. 3 | Page 65 of 81 | www.onsemi.com
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