Owner's manual

DS1874
SFP+ Controller with Digital LDD Interface
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Table 02h, Register FAh: WRITE
FACTORY DEFAULT 00h
READ ACCESS PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS PW2 or (PW1 and RWTBL246)
MEMORY TYPE Volatile
FAh 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
BIT 7 BIT 0
This byte is used during manual 3-wire communication. When a manual write is initiated, this register contains
the data for the operation.
FACTORY DEFAULT 00h
READ ACCESS PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS N/A
MEMORY TYPE Volatile
FBh 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
BIT 7 BIT 0
This byte is used during maunual 3-wire communication. When a manual read is initiated, the return data is
stored in this register.
FACTORY DEFAULT 00h
READ ACCESS PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS N/A
MEMORY TYPE Volatile
FCh 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
BIT 7 BIT 0
MAX3798/MAX3799 register. This value is read from the MAX3798/MAX3799 with the 3-wire interface every t
RR
(see the MAX3798/MAX3799 electrical characteristics).
Table 02h, Register FBh: READ
Table 02h, Register FCh: TXSTAT1