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DS1886_V1 Datasheet - Page 68

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A2h Table 02h, Register 8Fh: RIGHT-SHIFT
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
8Fh
RESERVED
RSSIF
BIT 7
Allows for right-shifting the final answer of RSSI fine and coarse voltage measurements. This allows for scaling the
measurements to the smallest full-scale voltage and then right-shifting the final result so the reading is weighted to
the correct LSB.
A2h Table 02h, Register 90h–91h: XOVER COARSE
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
15
90h
2
2
7
91h
2
2
BIT 7
Defines the crossover value for RSSI measurements of nonlinear inputs when XOVEREN is set to a 1 (A2h Table
02h, Register 8Bh). RSSI coarse conversion results (before right-shifting) less than this register are clamped to the
value of this register.
SFP and PON ONU Controller
with Digital LDD Interface
(RSHIFT
)
0
0
30h
PW2 or (PW1 and RWTBL246) or (PW1 and RBL246)
PW2 or (PW1 and RWTBL246)
Nonvolatile (SEE)
RSSIF
RSSIF
2
1
0
0000h
PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
PW2 or (PW1 and RWTBL2)
Nonvolatile (SEE)
14
13
12
2
2
6
5
4
2
2
RESERVED
RSSIC
RSSIC
2
11
10
9
2
2
2
3
2
1
2
2
2
DS1886
RSSIC
1
0
BIT 0
8
2
0
BIT 0
68

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