DS1874T+ Maxim Integrated Products, DS1874T+ Datasheet - Page 34

• Manufacturer Part Number: DS1874T+
• Description: IC CTLR SFP+ ANLG LDD 28-TQFN
• Manufacturer: Maxim Integrated Products
• Type: Laser Diode Controllerr

Specifications of DS1874T+

• 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
• Number Of Outputs: 5
• Duty Cycle (max): 50 %
• Output Voltage: 0 V to 3.9 V
• Mounting Style: SMD/SMT
• Switching Frequency: 0 KHz to 400 KHz
• Operating Supply Voltage: 2.85 V to 3.9 V
• Supply Current: 2.5 mA to 10 mA
• Maximum Operating Temperature: + 95 C
• Fall Time: 300 ns
• Minimum Operating Temperature: - 40 C
• Rise Time: 300 ns
• Synchronous Pin: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 90-1874T+000

SFP+ Controller with Digital LDD Interface
The access codes represent the factory default values of PW_ENA and PW_ENB (Table 02h, Registers C0h–C1h).
34
Read
Access
Write
Access
ACCESS
80–9F
00–FF
80–9F
ROW
(hex)
ROW
(hex)
ROW
(hex)
CODE
A0
A0
______________________________________________________________________________________
<8>
<8>
<8>
<8>
<8>
separately
See each
NAME
NAME
NAME
ROW
ROW
ROW
bit/byte
AUX EE
LUT7
LUT7
LUT8
LUT8
<0>
BYTE 0/8
BYTE 0/8
BYTE 0/8
PW2
<1>
DAC1
DAC1
DAC2
DAC2
All
EE
WORD 0
WORD 0
WORD 0
<2>
N/A
All
BYTE 1/9
BYTE 1/9
BYTE 1/9
DAC1
DAC1
DAC2
DAC2
EE
hardware
DS1874
All and
<3>
All
AUXILIARY MEMORY (A0h)
BYTE 2/A
BYTE 2/A
BYTE 2/A
TABLE 07h (DAC1 LUT)
TABLE 08h (DAC2 LUT)
DAC1
DAC1
DAC2
DAC2
PW2 +
mode
EE
PW2
<4>
bit
WORD 1
WORD 1
WORD 1
BYTE 3/B
BYTE 3/B
BYTE 3/B
<5>
All
All
DAC1
DAC1
DAC2
DAC2
EE
<6>
N/A
All
Auxiliary A0h Memory Register Map
RESERVED
RESERVED
BYTE 4/C
BYTE 4/C
BYTE 4/C
DAC1
DAC2
EE
PW1
PW1
<7>
WORD 2
WORD 2
WORD 2
RESERVED RESERVED
RESERVED RESERVED
BYTE 5/D
BYTE 5/D
BYTE 5/D
DAC1
DAC2
PW2
PW2
<8>
Table 07h Register Map
Table 08h Register Map
EE
PW2
<9>
N/A
BYTE 6/E
BYTE 6/E
BYTE 6/E
DAC1
DAC2
EE
WORD 3
WORD 3
WORD 3
<10>
PW2
N/A
RESERVED
RESERVED
BYTE 7/F
BYTE 7/F
BYTE 7/F
DAC1
DAC2
EE
<11>
PW1
All