DS1865T+T&R Maxim Integrated Products, DS1865T+T&R Datasheet - Page 64

• Manufacturer Part Number: DS1865T+T&R
• Description: IC PON CONTROL TRI 28-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of DS1865T+T&R

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 28-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PON Triplexer Control and
Monitoring Circuit
64
Table 04h, Register 80h to C7h: MOD LUT
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE:
The digital value for the 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 (Table 02h, Register 82h)
location that 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 is directly controlled for calibration. If the temperature compensation functionality is not
required, then program the entire Table 04h to the desired modulation setting.
Table 03h, Register 80h to FFh: PW2 EEPROM
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE:
PW2 protected EEPROM.
80h-C7h
80h-FFh
____________________________________________________________________
bit7
bit7
EE
2
7
00h
PW2
PW2
00h
PW2
PW2
EE
Nonvolatile (EE)
Nonvolatile (EE)
2
6
EE
2
5
EE
2
4
Table 03h Register Descriptions
Table 04h Register Descriptions
EE
2
3
EE
2
2
EE
2
1
bit0
bit0
EE
2
0