User guide

DS1875
Table 02h, Register 8Ah: RESERVED
FACTORY DEFAULT 00h
READ ACCESS PW2
WRITE ACCESS PW2
MEMORY TYPE Nonvolatile (SEE)
This register is reserved.
Table 02h, Register 8Bh: MOD RANGING
FACTORY DEFAULT 00h
READ ACCESS PW2
WRITE ACCESS PW2
MEMORY TYPE Nonvolatile (SEE)
8Bh RESERVED RESERVED RESERVED RESERVED RESERVED MOD
2
MOD
1
MOD
0
BIT 7 BIT 0
The lower nibble of this byte controls the full-scale range of the Modulation DAC
BITS 7:3 RESERVED (Default = 0)
BITS 2:0
MOD[2:0]: MOD FS RANGING: 3-bit value to select the FS output voltage for MOD. Default is 000b
and creates a FS of 1.25V.
MOD[2:0] % OF 1.25V FS VOLTAGE (V)
000b 100.00 1.250
001b 80.05 1.001
010b 66.75 0.834
011b 50.13 0.627
100b 40.15 0.502
101b 33.50 0.419
110b 28.74 0.359
111b 25.17 0.315
PON Triplexer and SFP Controller
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