Datasheet

DS1878
SFP+ Controller with Digital LDD Interface
84 ______________________________________________________________________________________
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 78h
READ ACCESS PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS N/A
MEMORY TYPE ROM
CEh 0 1 1 1 1 0 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