DS1874T+ Maxim Integrated Products, DS1874T+ Datasheet - Page 71

• 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

Table 02h, Register C1h: PW_ENB
C1h
SFP+ Controller with Digital LDD Interface
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
RWTBL46
BIT 7
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
______________________________________________________________________________________
RWTBL46: Read and Write Tables 04h, 06h
0 = (Default) Read and write access for PW2 only.
1 = Read and write access for both PW1 and PW2.
RTBL1C: Read Table 01h or Table 05h, Registers F8h–FFh. Table address is dependent on MASK
bit (Table 02h, Register 89h).
0 = (Default) Read access for PW2 only.
1 = Read access for PW1 and PW2.
RTBL2: Read Table 02h except for PW1 value locations (Table 02h, Registers B0h–B3h)
0 = (Default) Read access for PW2 only.
1 = Read access for PW1 and PW2.
RTBL1A: Read Table 01h, Registers 80h–BFh
0 = (Default) Read access for PW2 only.
1 = Read access for PW1 and PW2.
RTBL1B: Read Table 01h, Registers C0h–F7h
0 = (Default) Read access for PW2 only.
1 = Read access for PW1 and PW2.
WPW1: Write Register PW1 (Table 02h, Registers B0h–B3h). For security purposes these registers
are not readable.
0 = (Default) Write access for PW2 only.
1 = Write access for PW1 and PW2.
WAUXAU: Write Auxiliary Memory, Registers 00h–7Fh. All users can read this area.
0 = Write access for PW2 only.
1 = (Default) Write access for user, PW1 and PW2.
WAUXBU: Write Auxiliary Memory, Registers 80h–FFh
0 = Read and write access for PW2 only.
1 = (Default) Read and write access for user, PW1 and PW2.
RTBL1C
03h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
PW2 or (PW1 and RWTBL246)
Nonvolatile (SEE)
RTBL2
RTBL1A
RTBL1B
WPW1
WAUXAU
WAUXBU
BIT 0
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