Datasheet

DS1886
SFP and PON ONU Controller
with Digital LDD Interface
44Maxim Integrated
A2h Lower Memory Register Descriptions
A2h Lower Memory, Register 00h–01h: TEMP ALARM HI
A2h Lower Memory, Register 04h–05h: TEMP WARN HI
A2h Lower Memory, Register 02h–03h: TEMP ALARM LO
A2h Lower Memory, Register 06h–07h: TEMP WARN LO
FACTORY DEFAULT 7FFFh
READ ACCESS All
WRITE ACCESS PW2
MEMORY TYPE Nonvolatile (SEE)
00h, 04h S 2
6
2
5
2
4
2
3
2
2
2
1
2
0
01h, 05h 2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
2
-7
2
-8
BIT 7 BIT 0
Temperature measurement updates above this two’s complement threshold set its corresponding alarm or
warning bit. Temperature measurement updates equal to or below this threshold clear its alarm or warning bit.
FACTORY DEFAULT 8000h
READ ACCESS All
WRITE ACCESS PW2
MEMORY TYPE Nonvolatile (SEE)
02h, 06h S 2
6
2
5
2
4
2
3
2
2
2
1
2
0
03h, 07h 2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
2
-7
2
-8
BIT 7 BIT 0
Temperature measurement updates below this two’s complement threshold set its corresponding alarm or
warning bit. Temperature measurement updates equal to or above this threshold clear its alarm or warning bit.