Datasheet

DS1878
SFP+ Controller with Digital LDD Interface
70 ______________________________________________________________________________________
FACTORY DEFAULT FFFFh
READ ACCESS PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
WRITE ACCESS PW2 or (PW1 and RWTBL2)
MEMORY TYPE Nonvolatile (SEE)
A0h 2
15
2
14
2
13
2
12
2
11
2
10
2
9
2
8
A1h 2
7
2
6
2
5
2
4
2
3
2
2
2
1
0
BIT 7 BIT 0
Defines the crossover value for RSSI measurements of nonlinear inputs when XOVEREN is set to 1 (Table 02h,
Register 8Bh). MON3 fine conversion results (before right-shifting) greater than this register require a MON3
coarse conversion.
Table 02h, Register A0h–A1h: XOVER FINE
Table 02h, Register A2h–A3h: V
CC
OFFSET
Table 02h, Register A4h–A5h: MON1 OFFSET
Table 02h, Register A6h–A7h: MON2 OFFSET
Table 02h, Register A8h–A9h: MON3 FINE OFFSET
Table 02h, Register AAh–ABh: MON4 OFFSET
Table 02h, Register ACh–ADh: MON3 COARSE OFFSET
FACTORY DEFAULT 00h
READ ACCESS PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS PW2 or (PW1 and RWTBL246)
MEMORY TYPE Nonvolatile (SEE)
A2h, A4h,
A6h, A8h,
AAh, ACh
S S 2
15
2
14
2
13
2
12
2
11
2
10
A3h, A5h,
A7h, A9h,
ABh, ADh
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
BIT 7 BIT 0
Allows for offset control of these voltage measurements if desired. This number is two’s complement.