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May 12, 2010
 
IDT Confidential
Temperature Register Addresses
Capabilities Register
The Capabilities Register indicates the supported features of the temperature sensor.
Capabilities Register
Bits 15 - Bit 8  RFU; Reserved for future use. These bits will always read '0' and writing to them will have no affect.
Bit 7- EVSD-EVENT with Shutdown action.
0 - (default) The EVENT
 output freezes in its current state when entering shutdown. Upon exiting shutdown, the EVENT
 output remains in the
previous state until the next thermal sample is taken, or possibly sooner if EVENT
 is programmed for comparator mode.
1 The EVENT
 output is deasserted (not driven) when entering shutdown and remains deasserted upon exit from shutdown until the next thermal
sample is taken, or possibly sooner if EVENT
 is programmed for comparator mode.
Bit 6 - TMOUT  Bus timeout period for thermal sensor access during normal operation. Note that the TSE2002B3C supports timeout in both active
and shutdown mode for temperature sensor and SPD (EEPROM) portions of the device.
0 - Parameter t
TIMEOUT
 is supported within the range of 10 to 60 ms.
1 - (default) Parameter t
TIMEOUT
 is supported within the range of 25 to 35 ms (SMBus compatible).
Bit 5 - X  May be 0 or 1; applications must accept either code. (Default =0)
Bits 4 - 3  TRES[1:0]; Indicates the resolution of the temperature monitor as shown in the TRES Bit Decode table. (Default =01)
ADDR    R/W
Name
Function
Default
N/A
W
Address Pointer
Address storage for subsequent operations
N/A
00
R
Capabilities
Indicates the functions and capabilities of the
temperature sensor
004F
01
R/W
Configuration
Controls the operation of the temperature monitor
0000
02
R/W
High Limit
Temperature High Limit
0000
03
R/W
Low Limit
Temperature Low Limit
0000
04
R/W
TCRIT Limit
Critical Temperature
0000
05
R
Ambient Temperature    Current Ambient temperature
N/A
06
R
Manufacturer ID
PCI-SIG manufacturer ID
00B3
07
R
Device/Revision
Device ID and Revision number
2903
08
R/W
Resolution Register
Allows changing temperature sensor resolution
000F
ADDR    R/W
B15/B7    B14/B6    B13/B5   B12/B4    B11/B3    B10/B2    B9/B1    B8/B0
Default
00
R
RFU
RFU
RFU
RFU
RFU
RFU
RFU
RFU
004F
EVSD    TMOUT
X
TRES[1:0]
RANGE
ACC
EVENT
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