Lower memory register descri, Lower memory register descriptions, Ds1874 – Rainbow Electronics DS1874 User Manual
Page 35: Sfp+ controller with digital ldd interface
DS1874
Lower Memory Register Descriptions
Lower Memory, Register 00h–01h: TEMP ALARM HI
Lower Memory, Register 04h–05h: TEMP WARN HI
FACTORY DEFAULT
7FFFh
READ
ACCESS All
WRITE ACCESS
PW2 or (PW1 and WLOWER)
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 corresponding alarm or warning bits.
Temperature measurement updates equal to or below this threshold clear alarm or warning bits.
Lower Memory, Register 02h–03h: TEMP ALARM LO
Lower Memory, Register 06h–07h: TEMP WARN LO
FACTORY DEFAULT
8000h
READ
ACCESS All
WRITE ACCESS
PW2 or (PW1 and WLOWER)
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 corresponding alarm or warning bits.
Temperature measurement updates equal to or above this threshold clear alarm or warning bits.
SFP+ Controller with Digital LDD Interface
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