DS1864 datasheet(45/72 Pages) DALLAS

45 / 72 page

SFP Laser Controller and

Diagnostic IC

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Table 01h (Table 00h in DS1859 Configuration), FBh: Warning Masks

FACTORY DEFAULT:

00h

MEMORY TYPE:

Shadowed Memory (SEE)

FBh

MON3hi

MON3lo

RESERVED

bit7

bit0

These bytes configure a maskable interrupt, determining which warning flags assert the MINT bit (Lower Memory, byte 71h, bit 0). If

one of the interrupts is desired, its bit must be written to a 1 here. If no interrupt is desired, the bit should be written to a 0.

These bit locations do not match the register locations as called out in the SFF-8472, therefore another four byte set is also stored in

another location (Table 05h, registers F8h to FBh). The MASK configuration bit (Table 04h (Table 01h in DS1859 configuration),

bit7

MON3wrnhimask: Determines if an interrupt is generated for a High MON3 Warning Flag.

0 = No interrupt is generated.

1 = An interrupt is generated.

bit6

MON3wrnlomask: Determines if an interrupt is generated for a Low MON3 Warning Flag.

0 = No interrupt is generated.

1 = An interrupt is generated.

bit5:0

Reserved.

Table 01h (Table 00h in DS1859 Configuration), FCh to FFh: General Memory

FACTORY DEFAULT:

00h

MEMORY TYPE:

Shadowed Memory (SEE)

FCh to FFh

EEPROM

bit7

bit0

This is memory reserved for general use.

Table 02h, 80h to C7h: Temperature Lookup Table For DAC0

FACTORY DEFAULT:

00h

MEMORY TYPE:

Nonvolatile (EEPROM)

80h to C7h

EEPROM

bit7

bit0

This is the lookup table (LUT) for the DAC0 settings.

Table 02h Register Descriptions

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