ds1878 Maxim Integrated Products, Inc., ds1878 Datasheet - Page 81

• Manufacturer Part Number: ds1878
• Description: Sfp+ Controller With Digital Ldd Interface
• Manufacturer: Maxim Integrated Products, Inc.

Table 02h, Register CBh–CCh: BIAS REGISTER
Table 02h, Register CDh: APC DAC
Table 02h, Register CEh: DEVICE ID
CCh
CBh
CDh
CEh
SFP+ Controller with Digital LDD Interface
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
The digital value used for BIAS and resolved from the APC. This register is updated after each decision of the APC
loop.
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
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
READ ACCESS
WRITE ACCESS
MEMORY TYPE
Hardwired connections to show the device ID.
RESERVED
BIT 7
BIT 7
BIT 7
______________________________________________________________________________________
2
2
0
7
7
RESERVED
2
2
1
6
6
0000h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
N/A
Volatile
RESERVED
00h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
(PW2 and APC EN = 0) or (PW1 and RWTBL246 and APC EN = 0)
Volatile
78h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
N/A
ROM
2
2
1
5
5
RESERVED
2
2
1
4
4
RESERVED
2
2
1
3
3
RESERVED
2
2
0
2
2
RESERVED
2
2
0
1
1
BIT 0
BIT 0
BIT 0
2
2
2
0
8
0
0
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