DS1873T+ Maxim Integrated Products, DS1873T+ Datasheet - Page 75
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DS1873T+
Manufacturer Part Number
DS1873T+
Description
IC CTLR SFP+ ANLG LDD 28-TQFN
Manufacturer
Maxim Integrated Products
Type
Laser Diode Controllerr
Datasheet
1.DS1873TTR.pdf
(86 pages)
Specifications of DS1873T+
Number Of Channels
1
Voltage - Supply
2.85 V ~ 3.9 V
Current - Supply
2.5mA
Operating Temperature
-40°C ~ 95°C
Package / Case
28-WFQFN Exposed Pad
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
90-1873T+000
- Current page: 75 of 86
- Download datasheet (2Mb)
Table 02h, Register C7h: TBLSELPON
Table 02h, Register C8h–C9h: MAN BIAS
Table 02h, Register CAh: MAN_CNTL
CAh
C7h
C8h
C9h
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
SFP+ Controller with Analog LDD Interface
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
Chooses the initial value for the table-select byte (Lower Memory, Register 7Fh) at power-on.
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
When BIAS EN (Table 02h, Register 80h) is written to 0, writes to these bytes control the BIAS DAC.
When BIAS EN (Table 02h, Register 80h) is written to 0, MAN_CLK controls the updates of the MAN BIAS value to
the BIAS DAC. The values of MAN BIAS must be written with a separate write command. Setting MAN_CLK to a 1
clocks the MAN BIAS value to the BIAS DAC.
1) Write the MAN BIAS value with a write command.
2) Set the MAN_CLK bit to a 1 with a separate write command.
3) Clear the MAN_CLK bit to a 0 with a separate write command.
RESERVED
BIT 7
BIT 7
BIT 7
2
2
0
7
7
______________________________________________________________________________________
RESERVED
2
2
0
6
6
00h
PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
(PW2 and BIAS EN = 0) or (PW1 and RWTBL2 and BIAS EN = 0)
Volatile
00h
PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
PW2 or (PW1 and RWTBL2)
Nonvolatile (SEE)
0000h
PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
(PW2 and BIAS EN = 0) or (PW1 and RWTBL2 and BIAS EN = 0)
Volatile
RESERVED
2
2
0
5
5
RESERVED
2
2
0
4
4
RESERVED
2
2
0
3
3
RESERVED
2
2
0
2
2
RESERVED
2
2
0
1
1
MAN_CLK
BIT 0
BIT 0
BIT 0
2
2
2
8
0
0
75
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