DS1876 datasheet(48/69 Pages) MAXIM

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SFP Controller with Dual LDD Interface

Table 02h, Register 89h: CNFGB

FACTORY DEFAULT

00h

READ ACCESS

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

WRITE ACCESS

PW2 or (PW1 and RWTBL2)

A2h AND B2h MEMORY

Common A2h and B2h memory location

MEMORY TYPE

Nonvolatile (SEE)

89h

IN1C

INVOUT1

ALATCH2

QTLATCH2

WLATCH2

ALATCH1

QTLATCH1

WLATCH1

BIT 7

BIT 0

BIT 7

IN1C: IN1 software control bit (see Figure 10).

0 = IN1 pin’s logic controls OUT1 pin.

1 = OUT1 is active (bit 6 defines the polarity).

BIT 6

INVOUT1: Inverts the active state for OUT1 (see Figure 10).

0 = Noninverted.

1 = Inverted.

BIT 5

ALATCH2: ADC alarm’s comparison latch for transmitter 2. Latches alarms in Lower Memory,

Registers 70h–71h.

0 = ADC alarm and flags reflect the status of the last comparison.

1 = ADC alarm flags remain set.

BIT 4

QTLATCH2: QT’s comparison latch for transmitter 2. Latches QT alarms in Lower Memory,

Registers 72h–73h and 76h.

0 = QT alarm and warning flags reflect the status of the last comparison.

1 = QT alarm and warning flags remain set.

BIT 3

WLATCH2: ADC warning’s comparison latch for transmitter 2. Latches warnings in Lower Memory,

Registers 74h–75h.

0 = ADC warning flags reflect the status of the last comparison.

1 = ADC warning flags remain set.

BIT 2

ALATCH1: ADC alarm’s comparison latch for transmitter 1. Latches alarms in Lower Memory,

Registers 70h–71h.

0 = ADC alarm and flags reflect the status of the last comparison.

1 = ADC alarm flags remain set.

BIT 1

QTLATCH1: QT’s comparison latch for transmitter 1. Latches QT alarms in Lower Memory,

Registers 72h–73h and 76h.

0 = QT alarm and warning flags reflect the status of the last comparison.

1 = QT alarm and warning flags remain set.

BIT 0

WLATCH1: ADC warning’s comparison latch for transmitter 1. Latches warnings in Lower Memory,

Registers 74h–75h.

0 = ADC warning flags reflect the status of the last comparison.

1 = ADC warning flags remain set.

DS1876 Datasheet(PDF) 48 Page - Maxim Integrated Products

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