ds1878 Maxim Integrated Products, Inc., ds1878 Datasheet - Page 78

• Manufacturer Part Number: ds1878
• Description: Sfp+ Controller With Digital Ldd Interface
• Manufacturer: Maxim Integrated Products, Inc.

SFP+ Controller with Digital LDD Interface
Table 02h, Register C4h: DAC2TI
Table 02h, Register C5h: ISTEPTI
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C4h
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
DAC2 temperature index defines the TempCo boundary for the DAC2 LUT. The DAC2TC 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).
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
Determines which value between ISTEPH and ISTEPL is used as the ISTEP. TINDEX > ISTEPI, ISTEPH is used.
TINDEX < ISTEPTI, ISTEPL is used.
BIT 7
2
7
2
6
00h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
PW2 or (PW1 and RWTBL246)
Nonvolatile (SEE)
00h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
PW2 or (PW1 and RWTBL246)
Nonvolatile (SEE)
2
5
DAC2TI =
2
Temp _ Value + 40°C
4
4°C
2
3
+ 80h
2
2
2
1
BIT 0
2
0