Changes To Table 61 - Analog Devices ADT7473 Manual

1
Bit Name R/W
[6] Local R/W
THERM
[7] R2 THERM R/W
1
This register becomes read-only when the Configuration Register 1 lock bit is set to 1. Any further attempts to write to this register have no effect.
Table 61. Register 0x7D—Configuration Register 4 (Power-On Default = 0x00)
Bit Name R/W
[1:0] Pin9FUNC Read/write
[2] THERM Disable Read/write
[3] Max/Full on Read/write
THERM
[4] RES
THERM_LATCH
Configuration
[5] BpAttV Read/write
CCP
[6] RES
[7] RES
1 This register becomes read-only when the Configuration Register 1 lock bit is set to 1. Any further attempts to write to this register have no effect.
Table 62. Register 0x7E—Manufacturer's Test Register 1 (Power-On Default = 0x00)
Bit Name R/W
[7:0] Reserved Read-only
Table 63. Register 0x7F—Manufacturer's Test Register 2 (Power-On Default = 0x00)
Bit Name R/W
[7:0] Reserved Read-only
Table 64. Register 0x80—Manufacturer's Test Register 3 (Power-On Default = 0x10)
Bit Name R/W
[7:0] Reserved Read-only
Description
Local THERM = 1, THERM temperature limit functionality enabled for the local temperature channel;
that is, THERM is bidirectional. Local THERM = 0, THERM is a timer input only.
THERM can also be disabled on any channel by
Writing −64˚C to the appropriate THERM temperature limit in Offset 64 mode.
Writing −128˚C to the appropriate THERM temperature limit in twos complement mode.
R2 THERM = 1, THERM temperature limit functionality enabled for Remote 2 temperature channel;
that is, THERM is bidirectional. R2 THERM = 0, THERM is a timer input only.
THERM can also be disabled on any channel by
Writing −64°C to the appropriate THERM temperature limit in Offset 64 mode.
Writing −128°C to the appropriate THERM temperature limit in twos complement mode.
1
Description
These bits set the functionality of Pin 9:
00 = TACH4 (default)
01 = THERM
10 = SMBALERT
11 = GPIO
THERM Disable = 1, disables THERM over temperature feature.
Max/Full on THERM = 0; when THERM temperature limit is exceeded, fans go to full speed.
Max/Full on THERM = 1; when THERM temperature limit is exceeded, fans go to maximum
programmed fan speed.
Max/Full on THERM = 1; when THERM limit is exceeded, fans go to maximum speed as defined in
Register 0x38, Register 0x39, Register 0x3A.
Unused on ADT7473
On the ADT7473-1:
0 = Remote Channel 2 (default)
1 = Remote Channel 1 and Remote Channel 2
Bypass V attenuator. When set, the measurement scale for this channel changes from 0 V (0x00)
CCP
to 2.2965 V (0xFF).
Unused.
Unused.
Description
Manufacturer's test register. These bits are reserved for manufacturer's test purposes and should not be
written to under normal operation.
Description
Manufacturer's test register. These bits are reserved for manufacturer's test purposes and should not be
written to under normal operation.
Description
Manufacturer's test register. These bits are reserved for manufacturer's test purposes and should not be
written to under normal operation.
Rev. C | Page 71 of 72
ADT7473/ADT7473-1