DS1874T+ Maxim Integrated Products, DS1874T+ Datasheet - Page 70

• 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 C0h: PW_ENA
SFP+ Controller with Digital LDD Interface
70
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C0h
FACTORY DEFAULT
READ ACCESS
WRITE ACCESS
MEMORY TYPE
RWTBL78
BIT 7
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
RWTBL78: Tables 07h–08h
0 = (Default) Read and write access for PW2 only.
1 = Read and write access for both PW1 and PW2.
RWTBL1C: Table 01h or 05h bytes F8h–FFh. Table address is dependent on MASK bit (Table 02h,
Register 89h).
0 = (Default) Read and write access for PW2 only.
1 = Read and write access for both PW1 and PW2.
RWTBL2: Tables 02h, except for PW1 value locations (Table 02h, Registers B0h–B3h).
0 = (Default) Read and write access for PW2 only.
1 = Read and write access for both PW1 and PW2.
RWTBL1A: Read and Write Table 01h, Registers 80h–BFh
0 = Read and write access for PW2 only.
1 = (Default) Read and write access for both PW1 and PW2.
RWTBL1B: Read and Write Table 01h, Registers C0h–F7h
0 = (Default) Read and write access for PW2 only.
1 = Read and write access for both PW1 and PW2.
WLOWER: Write Lower Memory Bytes 00h–5Fh in main memory. All users can read this area.
0 = (Default) Write access for PW2 only.
1 = Write access for both PW1 and PW2.
WAUXA: Write Auxiliary Memory, Registers 00h–7Fh. All users can read this area.
0 = (Default) Write access for PW2 only.
1 = Write access for both PW1 and PW2.
WAUXB: Write Auxiliary Memory, Registers 80h–FFh. All users can read this area.
0 = (Default) Write access for PW2 only.
1 = Write access for both PW1 and PW2.
RWTBL1C
10h
PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
PW2 or (PW1 and RWTBL246)
Nonvolatile (SEE)
RWTBL2
RWTBL1A
RWTBL1B
WLOWER
WAUXA
WAUXB
BIT 0