Ds1874 sfp+ controller with digital ldd interface – Rainbow Electronics DS1874 User Manual
Page 76
DS1874
SFP+ Controller with Digital LDD Interface
76
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Table 02h, Register CBh–CCh: BIAS REGISTER
FACTORY
DEFAULT
0000h
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE
ACCESS
N/A
MEMORY
TYPE
Volatile
CBh RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED RESERVED
2
8
CCh 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
BIT
7
BIT
0
The digital value used for BIAS and resolved from the APC. This register is updated after each decision of the
APC loop.
FACTORY
DEFAULT
00h
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS
(PW2 and APC EN = 0) or (PW1 and RWTBL246 and APC EN = 0)
MEMORY
TYPE Volatile
CDh 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
BIT
7
BIT
0
The digital value used for APC reference and recalled from Table 06h at the adjusted memory address found in
TINDEX. This register is updated at the end of the temperature conversion.
FACTORY
DEFAULT
74h
READ ACCESS
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE
ACCESS
N/A
MEMORY
TYPE
ROM
CEh
0 1 1 1 0
1 0
0
BIT
7
BIT
0
Hardwired connections to show the device ID.
Table 02h, Register CDh: APC DAC
Table 02h, Register CEh: DEVICE ID