DS1875T+ Maxim Integrated Products, DS1875T+ Datasheet - Page 82

• Manufacturer Part Number: DS1875T+
• Description: IC SFP CTRLR/TRIPLEXER 38-TQFN
• Manufacturer: Maxim Integrated Products

Specifications of DS1875T+

• Applications: Fiber Optics
• Interface: I²C
• Voltage - Supply: 2.85 V ~ 3.9 V
• Package / Case: *
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PON Triplexer and SFP Controller
Table 02h, Register C5h to C6h: RESERVED
Table 02h, Register C7h: M4 LUT CNTL
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C7h
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
These registers are reserved.
Controls the size and location of LUT functions for the MON4 measurement.
RESERVED
BITS 7:4
BITS 3:2
BIT 7
BIT 1
BIT 0
RESERVED (Default = 000000b)
FBOL and FBCL: Force bias open loop and force bias closed loop.
00b = (Default) normal operation.
10b = Force control of I
01b = Force control of I
11b = Same as 10b.
When forcing open-loop mode, BEN should be ground or at any burst length.
DBL_SB: Chooses the size of LUT for Table 06h.
0 = (Default) Single LUT of 32 bytes.
1 = Double LUT of 16 bytes.
UP_LOWB: Determines which 16-byte LUT is used if DBL_SB = 1. If DBL_SB = 0, the value of
this bit is a don’t care.
0 = (Default) Chooses the lower 16 bytes of Table 06h (80h to 8Fh).
1 = Chooses the upper 16 bytes of Table 06h (90h to 9Fh).
RESERVED
00h
PW2
PW2
Nonvolatile (SEE)
00h
PW2
PW2
Nonvolatile (SEE)
RESERVED
BIAS
BIAS
to be open loop regardless of duration of BEN pulses.
to be closed loop regardless of duration of BEN pulses.
RESERVED
FBOL
FBCL
DBL_SB
UP_LOWB
BIT 0