DS1864 Maxim Integrated Products, DS1864 Datasheet - Page 42

• Manufacturer Part Number: DS1864
• Description: SFP Laser Controller and Diagnostic IC
• Manufacturer: Maxim Integrated Products

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SFP Laser Controller and
Diagnostic IC
42
Table 01h (Table 00h in DS1859 Configuration), F8h: Alarm Masks
FACTORY DEFAULT:
MEMORY TYPE:
Bytes F8h and F9h configure a maskable interrupt, determining which alarm 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
Table 05h, registers F8h to FBh. The MASK configuration bit (Table 04h (Table 01h in DS1859 configuration), register DAh, bit 0)
determines which of these mask sets is used to generate the MINT interrupt.
____________________________________________________________________
F8h
TMPhi
bit7
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
TMPalmhimask: Determines if an interrupt is generated for a High Temperature Alarm Flag.
0 = No interrupt is generated.
1 = An interrupt is generated.
TMPalmlomask: Determines if an interrupt is generated for a Low Temperature Alarm Flag.
0 = No interrupt is generated.
1 = An interrupt is generated.
V
0 = No interrupt is generated.
1 = An interrupt is generated.
V
0 = No interrupt is generated.
1 = An interrupt is generated.
MON1almhimask: Determines if an interrupt is generated for a High MON1 Alarm Flag.
0 = No interrupt is generated.
1 = An interrupt is generated.
MONalmlomask: Determines if an interrupt is generated for a Low MON1 Alarm Flag.
0 = No interrupt is generated.
1 = An interrupt is generated.
MON2almhimask: Determines if an interrupt is generated for a High MON2 Alarm Flag.
0 = No interrupt is generated.
1 = An interrupt is generated.
MON2almlomask: Determines if an interrupt is generated for a Low MON2 Alarm Flag.
0 = No interrupt is generated.
1 = An interrupt is generated.
CC
CC
TMPlo
almhimask: Determines if an interrupt is generated for a High V
almlomask: Determines if an interrupt is generated for a Low V
00h
Shadowed Memory (SEE)
V
CC
hi
V
CC
lo
MON1hi
MON1lo
CC
CC
Alarm Flag.
Alarm Flag.
MON2hi
MON2lo
bit0