Ds1874 sfp+ controller with digital ldd interface – Rainbow Electronics DS1874 User Manual
Page 72
DS1874
SFP+ Controller with Digital LDD Interface
72
______________________________________________________________________________________
Table 02h, Register C2h: MODTI
FACTORY
DEFAULT
00h
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS
PW2 or (PW1 and RWTBL246)
MEMORY TYPE
Nonvolatile (SEE)
C2h 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
BIT
7
BIT
0
The modulation temperature index defines the TempCo boundary for the MODULATION LUT. The MODTC bit
(Table 02h, Register C6h) defines the polarity of the TempCo.
MODTI
=
Temp _ Value
+ 40°C
2
°C
+ 80h
FACTORY
DEFAULT
00h
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS
PW2 or (PW1 and RWTBL246)
MEMORY TYPE
Nonvolatile (SEE)
C3h 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
BIT
7
BIT
0
DAC1 temperature index (DAC1TI) defines the TempCo boundary for the DAC1 LUT. The DAC1TC bit (Table 02h,
Register C6h) defines the polarity of the TempCo. This value is compared with the adjusted memory address
used during the LUT recall, not the value in the TINDEX register (Table 02h, Register 81h).
DAC1TI
=
Temp _ Value
+ 40°C
4
°C
+ 80h
Table 02h, Register C3h: DAC1TI