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Burst-Mode PON Controller
With Integrated Monitoring
Table 02h, Register FBh to FFh: Reserved
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE:
These registers are reserved.
Table 03h, Register Descriptions
Table 03h, Register 80h to FFh: PW2 EEPROM
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE:
00h
PW2
PW2
Nonvolatile (EE)
80h-FFh
EE
EE
EE
EE
EE
EE
EE
EE
bit7
PW2 general-purpose EEPROM.
Table 04h, Register Descriptions
Table 04h, Register 80h to C7h: Modulation LUT
bit0
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE:
00h
PW2
PW2
Nonvolatile (EE)
80h-C7h
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
bit7
bit0
The unsigned value for modulation DAC output.
The Modulation LUT is a set of registers assigned to hold the temperature profile for the Modulation DAC. The values in this table
combined with the MOD bits in the MOD Ranging register (Table 02h, Register 8Bh) determine the set point for the Modulation
Voltage. The temperature measurement is used to index the LUT (T INDEX, Table 02h, Register 81h) in 2 ° C increments from -40 ° C
to +102 ° C, starting at 80h in Table 04h. Register 80h defines the -40 ° C to -38 ° C MOD output, register 81h defines -38 ° C to -36 ° C
MOD output, and so on. Values recalled from this EEPROM memory table are written into the MOD DAC location which holds the
value until the next temperature conversion. The part can be placed into a manual mode (Mod_En bit, Table 02h, Register 80h),
where MOD DAC can be directly controlled for calibration. If the temperature compensation functionality is not required, then
program the entire Table 04h, to the desired modulation setting.
60
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