MAX6604 MAXIM [Maxim Integrated Products], MAX6604 Datasheet - Page 10

• Manufacturer Part Number: MAX6604
• Description: Precision Temperature Monitor for DDR Memory Modules
• Manufacturer: MAXIM [Maxim Integrated Products]

Similarly, the below alarm window bit (bit 13 of the tem-
perature register) is set to 0 (temperature is equal to or
above the alarm window lower boundary trip tempera-
ture) when the value in the temperature register is equal
to or greater than the value in the alarm-temperature
lower-boundary register. As the temperature decreas-
es, bit 13 is set to 1 when the value in the temperature
register is equal to or less than the value in the alarm-
temperature lower-boundary register minus 3°C.
Note that hysteresis is also applied to EVENT output
functionality. When either of the lock bits is set, the hys-
Precision Temperature Monitor for
DDR Memory Modules
Table 4. Configuration Register (Read/Write) (continued)
Table 5. Alarm-Temperature Upper-Boundary Trip Register (Read/Write)
10
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10
Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10
15:11
10:9
BIT
8
______________________________________________________________________________________
Shutdown mode
0 = Enable temperature monitoring (default)
1 = Shutdown temperature monitoring
When shutdown occurs, the thermal-sensing device and analog-to-digital converter are disabled to save power;
no EVENT output signals are generated. When either of the lock bits is set, this bit cannot be set until unlocked. However,
it can be cleared at any time.
Hysteresis enable
00 = Disable hysteresis
01 = Enable hysteresis at 1.5°C
10 = Enable hysteresis at 3°C
11 = Enable hysteresis at 6°C
0: Reserved for future use (RFU). Must be zero.
DEFINITION (DESCRIPTIONS IN BOLD TYPE ARE THE DEFAULT VALUES)
Bit 9
Bit 9
Bit 8
Bit 8
Bit 7
Bit 7
teresis bits cannot be altered. Hysteresis is applied to
both alarm window comparisons and critical tempera-
ture comparisons.
The data format for the upper-boundary trip threshold is in
two’s complement with one LSB = 0.25°C. The alarm-
temperature upper-boundary trip register has a -256.00°C
to +255.75°C range. All unused bits are set to zero.
Alarm-Temperature Upper-Boundary Trip
Bit 6
Bit 6
Bit 5
Bit 5
[Address = 02h, POR = 0000h]
Bit 4
Bit 4
Register (Read/Write)
Bit 3
Bit 3
Bit 2
Bit 2
Bit 1
Bit 1
Bit 0
Bit 0