Ds1874 sfp+ controller with digital ldd interface – Rainbow Electronics DS1874 User Manual
Page 64
DS1874
SFP+ Controller with Digital LDD Interface
64
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Table 02h, Register A2h–A3h: VCC OFFSET
Table 02h, Register A4h–A5h: MON1 OFFSET
Table 02h, Register A6h–A7h: MON2 OFFSET
Table 02h, Register A8h–A9h: MON3 FINE OFFSET
Table 02h, Register AAh–ABh: MON4 OFFSET
Table 02h, Register ACh–ADh: MON3 COARSE OFFSET
FACTORY
DEFAULT
00h
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS
PW2 or (PW1 and RWTBL246)
MEMORY TYPE
Nonvolatile (SEE)
A2h, A4h,
A6h, A8h,
AAh, ACh
S S
2
15
2
14
2
13
2
12
2
11
2
10
A3h, A5h,
A7h, A9h,
ABh, ADh
2
9
2
8
2
7
2
6
2
5
2
4
2
3
2
2
BIT
7
BIT
0
Allows for offset control of these voltage measurements if desired. This number is two’s complement.
FACTORY
CALIBRATED
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS
PW2 or (PW1 and RWTBL246)
MEMORY
TYPE Nonvolatile
(SEE)
AEh S
2
8
2
7
2
6
2
5
2
4
2
3
2
2
AFh 2
1
2
0
2
-1
2
-2
2
-3
2
-4
2
-5
2
-6
BIT
7
BIT
0
Allows for offset control of temperature measurement if desired. The final result must be XORed with BB40h
before writing to this register. Factory calibration contains the desired value for a reading in degrees Celsius.
Table 02h, Register AEh–AFh: INTERNAL TEMP OFFSET