ds1878 Maxim Integrated Products, Inc., ds1878 Datasheet - Page 36

• Manufacturer Part Number: ds1878
• Description: Sfp+ Controller With Digital Ldd Interface
• Manufacturer: Maxim Integrated Products, Inc.

Lower Memory, Register 00h–01h: TEMP ALARM HI
Lower Memory, Register 04h–05h: TEMP WARN HI
SFP+ Controller with Digital LDD Interface
Lower Memory, Register 02h–03h: TEMP ALARM LO
Lower Memory, Register 06h–07h: TEMP WARN LO
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00h, 04h
01h, 05h
02h, 06h
03h, 07h
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Temperature measurement updates above this two’s complement threshold set corresponding alarm or warning
bits. Temperature measurement updates equal to or below this threshold clear alarm or warning bits.
Temperature measurement updates below this two’s complement threshold set corresponding alarm or warning
bits. Temperature measurement updates equal to or above this threshold clear alarm or warning bits.
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
BIT 7
BIT 7
2
2
S
S
-1
-1
2
2
2
2
-2
-2
6
6
7FFFh
All
PW2
Nonvolatile (SEE)
8000h
All
PW2
Nonvolatile (SEE)
2
2
2
2
-3
-3
5
5
2
2
2
2
-4
-4
4
4
Lower Memory Register Descriptions
2
2
2
2
-5
-5
3
3
2
2
2
2
-6
-6
2
2
2
2
2
2
-7
-7
1
1
BIT 0
BIT 0
2
2
2
2
-8
-8
0
0