DS1876 datasheet(57/69 Pages) MAXIM

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SFP Controller with Dual LDD Interface

Table 02h, Register BDh: HBIAS1 DAC

Table 02h, Register BEh: HTXP1 DAC

Table 02h, Register BFh: LTXP1 DAC

FACTORY DEFAULT

00h

READ ACCESS

PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)

WRITE ACCESS

(PW2 and QT1EN = 0) or (PW1 and RWTBL2 and QT1EN = 0)

A2h AND B2h MEMORY

Common A2h and B2h memory location

MEMORY TYPE

Volatile

BDh

BIT 7

BIT 0

The digital value used for the HBIAS1 reference and recalled from Table 06h (Registers E0h–E7h) (transmitter 1) at

the adjusted memory address found in TINDEX. This register is updated at the end of the temperature conversion.

Comparisons greater than VHBIAS1 compared against VBMON1 create an HBAL alarm.

HBIAS1

Full Scale

HBIAS1 DAC

256

FACTORY DEFAULT

00h

READ ACCESS

PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)

WRITE ACCESS

(PW2 and QT1EN = 0) or (PW1 and RWTBL2 and QT1EN = 0)

A2h AND B2h MEMORY

Common A2h and B2h memory location

MEMORY TYPE

Volatile

BEh

BIT 7

BIT 0

The digital value used for the HTXP1 reference and recalled from Table 06h (Registers E8h–EFh) (transmitter 1) at

the adjusted memory address found in TINDEX. This register is updated at the end of the temperature conversion.

Comparisons great than VHTXP1 compared against VPMON1 create a TXP HI alarm.

HTXP1

Full Scale

HTXP1 DAC

256

FACTORY DEFAULT

00h

READ ACCESS

PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)

WRITE ACCESS

(PW2 and QT1EN = 0) or (PW1 and RWTBL2 and QT1EN = 0)

A2h AND B2h MEMORY

Common A2h and B2h memory location

MEMORY TYPE

Volatile

BFh

BIT 7

BIT 0

The digital value used for the LTXP1 reference and recalled from Table 06h (Registers F0h–F7h) (transmitter 1) at

the adjusted memory address found in TINDEX. This register is updated at the end of the temperature conversion.

Comparisons less than VLTXP1 compared against VPMON1 create a TXP LO alarm.

LTXP1

Full Scale

LTXP1 DAC

256

DS1876 Datasheet(PDF) 57 Page - Maxim Integrated Products

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