DS1873T+ Maxim Integrated Products, DS1873T+ Datasheet - Page 30

• Manufacturer Part Number: DS1873T+
• Description: IC CTLR SFP+ ANLG LDD 28-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Laser Diode Controllerr

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

SFP+ Controller with Analog LDD Interface
* The final result must be XORed with BB40h before writing to this register.
The access codes represent the factory default values of PW_ENA and PW_ENB (Table 02h, Registers C0h–C1h).
These registers also allow for custom permissions.
30
Read
Access
Write
Access
D8–FF
ACCESS
ROW
(hex)
A0
A8
B0
B8
C0
C8
D0
80
88
90
98
CODE
______________________________________________________________________________________
<9>
<8>
<0>
<8>
<8>
<8>
<8>
<8>
PWD VALUE
THRESHOLD
<8>
ENABLE
<0>
<0>
EMPTY
NAME
separately
CONFIG
CONFIG
OFFSET
OFFSET
ROW
SCALE
SCALE
See each
bit/byte
PWD
BIAS
APC
<0>
0
1
0
1
0
1
RANGING
BYTE 0/8
<8>
UPDATE
PW_ENA
<4>
PW2
EMPTY
MON3 FINE OFFSET
<1>
RATE
MON3 FINE SCALE
All
DAC
LOS
XOVER COARSE
MODE
APC
<4>
XOVER FINE
PW1 MSW
WORD 0
MAN BIAS
<2>
N/A
All
<4>
RANGING
<8>
BYTE 1/9
PW_ENB
CNFGA
EMPTY
COMP
DAC
TINDEX
HBIAS
hardware
DS1873
All and
<3>
All
RESERVED
RESERVED
IBIASMAX
BYTE 2/A
<4>
CNFGB
EMPTY
CNTL
PW2 +
mode
MAN_
PW2
<4>
MON4 OFFSET
<4>
MON4 SCALE
bit
V
V
CC
PW1 LSW
TABLE 02h
WORD 1
CC
MOD DAC
OFFSET
SCALE
RESERVED RESERVED
RESERVED RESERVED
BYTE 3/B
<5>
All
All
CNFGC
EMPTY
ISTEP
<10>
BIAS DAC
<6>
N/A
All
MON3 COARSE OFFSET
BYTE 4/C
ADDRESS
MON3 COARSE SCALE
DEVICE
EMPTY
HTXP
<4>
MON1 OFFSET
MON1 SCALE
PW1
PW1
<7>
PW2 MSW
DAC1 VALUE
WORD 2
RESERVED
RESERVED
RESERVED RESERVED
BYTE 5/D
RSHIFT
EMPTY
PW2
PW2
LTXP
<8>
Table 02h Register Map
2
PW2
<9>
N/A
<10>
POLARITY
BYTE 6/E
RSHIFT
EMPTY
HLOS
INTERNAL TEMP
<4>
DEVICE
ID
MON2 OFFSET
MON2 SCALE
RESERVED
DAC2 VALUE
PW2 LSW
WORD 3
OFFSET*
<10>
1
PW2
N/A
<10>
TBLSELPON
RESERVED
BYTE 7/F
RSHIFT
EMPTY
LLOS
VER
DEVICE
<11>
PW1
All
0