Datasheet

DS1878
SFP+ Controller with Digital LDD Interface
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Lower Memory, Register 0Ah–0Bh: V
CC
ALARM LO
Lower Memory, Register 0Eh–0Fh: V
CC
WARN LO
Lower Memory, Register 12h–13h: MON1 ALARM LO
Lower Memory, Register 16h–17h: MON1 WARN LO
Lower Memory, Register 1Ah–1Bh: MON2 ALARM LO
Lower Memory, Register 1Eh–1Fh: MON2 WARN LO
Lower Memory, Register 22h–23h: MON3 ALARM LO
Lower Memory, Register 26h–27h: MON3 WARN LO
Lower Memory, Register 2Ah–2Bh: MON4 ALARM LO
Lower Memory, Register 2Eh–2Fh: MON4 WARN LO
FACTORY DEFAULT 0000h
READ ACCESS All
WRITE ACCESS PW2
MEMORY TYPE Nonvolatile (SEE)
0Ah, 0Eh,
12h, 16h,
1Ah, 1Eh,
22h, 26h,
2Ah, 2Eh
2
15
2
14
2
13
2
12
2
11
2
10
2
9
2
8
0Bh, 0Fh,
13h, 17h,
1Bh, 1Fh,
23h, 27h,
2Bh, 2Fh
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
BIT 7 BIT 0
Voltage measurement updates below this unsigned threshold set corresponding alarm or warning bits. Voltage
measurements equal to or above this threshold clear alarm or warning bits.