DS1864 View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated
Part Name
Description
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DS1864 Datasheet PDF : 72 Pages
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SFP Laser Controller and
Diagnostic IC
A0h Auxiliary Device Memory Register Descriptions
Memory Map
Auxiliary Registers 00h To FFh: GBIC Memory
FACTORY DEFAULT:
00h
MEMORY TYPE:
EEPROM
These registers are used to store GBIC data as called out by the SFF-8472 specification. This block of EEPROM is accessed
through I2C slave address A0h.
A2h Main Device, Lower Memory Register Descriptions
Lower Memory Register 00h to 01h: High Temperature Alarm Limit
FACTORY DEFAULT:
0000h
MEMORY TYPE:
Shadowed Memory (SEE)
00h
S
26
25
24
23
22
21
20
01h
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
bit7
bit0
Temperature measurements above this threshold will set its corresponding alarm bit (Lower Memory Register 70h, bit 7).
Measurements below this threshold will automatically clear its alarm bit.
Lower Memory Register 02h to 03h: Low Temperature Alarm Limit
FACTORY DEFAULT:
0000h
MEMORY TYPE:
Shadowed Memory (SEE)
02h
S
26
25
24
23
22
21
20
03h
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
bit7
bit0
Temperature measurements below this threshold will set its corresponding alarm bit (Lower Memory Register 70h, bit 6).
Measurements above this threshold will automatically clear its alarm bit.
Lower Memory Register 04h to 05h: High Temperature Warning Limit
FACTORY DEFAULT:
0000h
MEMORY TYPE:
Shadowed Memory (SEE)
04h
S
26
25
24
23
22
21
20
05h
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
bit7
bit0
Temperature measurements above this threshold will set its corresponding warning bit (Lower Memory Register 74h, bit 7).
Measurements below this threshold will automatically clear its warning bit.
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