参数资料
| 型号： | ADT7467BBZEVB |
| 厂商： | ON Semiconductor |
| 文件页数： | 56/72页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR ADT7467 |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi |
| 标准包装： | 1 |
| 系列： | dBCool® |
| 传感器类型： | 温度 |
| 传感范围： | -40°C ~ 120°C |
| 接口： | SMBus（2 线/I²C） |
| 灵敏度： | ±1.5°C |
| 电源电压： | 3 V ~ 5.5 V |
| 嵌入式： | 否 |
| 已供物品： | 板，缆线，CD |
| 已用 IC / 零件： | ADT7467 |
| 其它名称： | EVAL-ADT7467EBZ EVAL-ADT7467EBZ-ND |
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ADT7467
Table 47. OPERATING POINT REGISTERS (POWER-ON DEFAULT = 0XA4) (Notes 1, 2, 3)
Register Address
0x33
0x34
0x35
R/W
Read/Write
Read/Write
Read/Write
Description
Remote 1 Operating Point Register (Default = 100 ? C)
Local Temperature Operating Point Register (Default = 100 ? C)
Remote 2 Operating Point Register (Default = 100 ? C)
1. These registers set the target operating point for each temperature channel when the dynamic T MIN control feature is enabled.
2. The fans being controlled are adjusted to maintain temperature about an operating point.
3. These registers become read-only registers when the Configuration Register 1 LOCK bit is set to 1. Any subsequent attempts to write to
these registers fail.
Table 48. REGISTER 0X36 ? DYNAMIC T MIN CONTROL REGISTER 1 (POWER-ON DEFAULT = 0X00) (Note 1)
Bit
<0>
<1>
<2>
Name
CYR2
V CCP LO
PHTR1
R/W
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 MIN Control
Register 2 (0x37). These three bits define the delay time, in terms of the number of monitoring
cycles, for making subsequent T MIN adjustments in the control loop. The system is associated with
thermal time constants that must be found to optimize the response of the fans and the control
loop.
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 (Register 0x46), the following occurs:
Status Bit 1 in Interrupt 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 VCCPLO limit.
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.
<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.
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.
<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,
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.
<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 the 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
the 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 the 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 a read-only register when the Configuration Register 1 LOCK bit is set to 1. Any subsequent attempts to write to this
register fail.
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