DS1864 Maxim Integrated Products, DS1864 Datasheet - Page 31

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

www.DataSheet4U.com
Lower Memory Register 20h to 21h: High MON3 Alarm Limit
FACTORY DEFAULT:
MEMORY TYPE:
V ol tag e m easur em ents of the M ON 3 i np ut ab ove thi s thr eshol d w i l l set i ts cor r esp ond i ng al ar m b i t ( Low er M em or y Reg i ster 71h, b i t 7) .
M easur em ents b el ow thi s thr eshol d w i l l automatically cl ear i ts al ar m b i t.
Lower Memory Register 1Eh to 1Fh: Low MON2 Warning Limit
FACTORY DEFAULT:
MEMORY TYPE:
V ol tag e m easur em ents of the M ON 2 i np ut b el ow thi s thr eshol d w i l l set i ts cor r esp ond i ng w ar ni ng b i t ( Low er M em or y Reg i ster 74h, b i t 0) .
M easur em ents ab ove thi s thr eshol d w i l l automatically cl ear i ts w ar ni ng b i t.
Lower Memory Register 22h to 23h: Low MON3 Alarm Limit
FACTORY DEFAULT:
MEMORY TYPE:
V ol tag e m easur em ents of the M ON 3 i np ut b el ow thi s thr eshol d w i l l set i ts cor r esp ond i ng al ar m b i t ( Low er M em or y Reg i ster 71h, b i t 6) .
M easur em ents ab ove thi s thr eshol d w i l l automatically cl ear i ts al ar m b i t.
Lower Memory Register 24h to 25h: High MON3 Warning Limit
FACTORY DEFAULT:
MEMORY TYPE:
V ol tag e m easur em ents of the M ON 3 i np ut ab ove thi s thr eshol d w i l l set i ts cor r esp ond i ng w ar ni ng b i t ( Low er M em or y Reg i ster 75h, b i t 7) .
M easur em ents b el ow thi s thr eshol d w i l l automatically cl ear i ts w ar ni ng b i t.
1Eh
20h
21h
1Fh
22h
23h
24h
25h
bit7
bit7
bit7
bit7
2
2
2
2
2
2
2
2
15
15
15
15
7
7
7
7
0000h
0000h
0000h
0000h
2
Shadowed Memory (SEE)
2
2
Shadowed Memory (SEE)
2
Shadowed Memory (SEE)
Shadowed Memory (SEE)
2
2
2
2
14
14
14
14
6
6
6
6
____________________________________________________________________
2
2
2
2
2
2
2
2
13
13
13
13
5
5
5
5
SFP Laser Controller and
2
2
2
2
2
2
2
2
12
12
12
12
4
4
4
4
2
2
2
2
2
2
2
2
11
11
11
11
3
3
3
3
2
2
2
2
2
2
2
2
Diagnostic IC
10
10
10
10
2
2
2
2
2
2
2
2
2
2
2
2
9
1
9
1
9
1
9
1
bit0
bit0
bit0
bit0
2
2
2
2
2
2
2
2
8
0
8
0
8
0
8
0
31