Table 08h register descriptions, Auxiliary memory a0h registe, Auxiliary memory a0h register descriptions – Rainbow Electronics DS1875 User Manual
Page 91: Package information, Ds1875 pon triplexer and sfp controller
DS1875
PON Triplexer and SFP Controller
______________________________________________________________________________________
91
FACTORY
DEFAULT
00h
READ
ACCESS All
WRITE
ACCESS All
MEMORY TYPE
Nonvolatile (EE)
80h to C7h
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
BIT
7
BIT
0
The BIAS OPEN-LOOP LUT is a set of registers assigned to hold the temperature profile for the BIAS OL DAC.
The values in this table determine the set point for the BIAS current. The temperature measurement is used to
index the LUT (TINDEX, Table 02h, Register 81h) in 2°C increments from -40°C to +102°C, starting at 80h in
Table 08h. Register 80h defines the -40°C to -38°C BIAS OL output, Register 81h defines the -38°C to -36°C
BIAS OL output, and so on. Values recalled from this EEPROM memory table are written into the BIAS OL (Table
02h, Register FDh) location that holds the value until the next temperature conversion. The DS1875 can be
placed into a manual mode (BIAS EN bit, Table 02h, Register 80h), where BIAS OL DAC is directly controlled for
calibration. If the temperature compensation functionality is not required, then program the entire Table 08h to
the desired BIAS OL setting.
Auxiliary Memory A0h Register Descriptions
Auxiliary Memory A0h, Register 00h to FFh: EEPROM
FACTORY
DEFAULT
00h
READ
ACCESS ALL
WRITE
ACCESS ALL
MEMORY TYPE
Nonvolatile (EE)
80h to FFh
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
BIT 7
BIT 0
Accessible with the slave address A0h.
PACKAGE TYPE
PACKAGE CODE
DOCUMENT NO.
38 TQFN-EP
T3857+1
Package Information
For the latest package outline information and land patterns, go to
www.maxim-ic.com/packages
.
Table 08h Register Descriptions
Table 08h, Register 80h to C7h: BIAS OPEN-LOOP LUT