LTC5100EUFTR Linear Technology, LTC5100EUFTR Datasheet - Page 35

• Manufacturer Part Number: LTC5100EUFTR
• Manufacturer: Linear Technology
• Type: VCSELr

Specifications of LTC5100EUFTR

• Number Of Channels: 1
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

Table 8. Register: SYS_CONFIG—System Configuration (I
REGISTER
REGISTER DEFI ITIO S
.BITFIELD
.Reserved
.Cml_en
.Md_polarity
.Ext_temp_en
.Power_down_en
.Apc_en
.En_polarity
.Soft_en
.Operating_mode
15:8
BIT
7
6
5
4
3
2
1
0
RESET VALUE
U
(BIN)
0
0
0
1
0
0
0
0
U
FUNCTION AND VALUES
Current Mode Logic Enable
0: Floating Differential Input Termination: 100 Across IN
1: CML Compatible Input Termination: 50 from IN
Monitor Diode Polarity
0: Cathode Connected to the MD Pin, Sinking Current from the Pin
1: Anode Connected to the MD Pin, Sourcing Current Into the Pin
External Temperature Enable
Selects the Source of Temperature Measurements for Temperature Compensation.
0: Internal Temperature Sensor
1: Externally Supplied Through the Serial Interface
Power Down Enable
Allow Power Reduction When the Transmitter is Disabled.
0: No Power Reduction When the Transmitter is Disabled.
1: Reduce Power Consumption When Transmitter is Disabled by Turning Off the High Speed Amplifiers.
Automatic Power Control Enable
Select the Means of Controlling the Laser Bias Current.
0: Constant Current Control
1: Automatic Power Control Using Feedback from the Monitor Diode
EN Pin Polarity
Set the Input Polarity of the EN Pin.
0: Active Low: A Logic Low Input Level Enables the Transmitter.
1: Active High: A Logic High Input Level Enables the Transmitter.
Note: In order to Enable the Transmitter, Both the EN Pin and Soft_en Bit Must be Asserted.
Soft Transmitter Enable
Enables Transmitter Through the Serial Interface.
0: Disable the Transmitter
1: Enable the Transmitter (if the EN Pin is Active)
Note: In order to Enable the Transmitter, Both the EN Pin and Soft_en Bit Must be Asserted.
Digital Operating Control Mode
Select Whether the LTC5100 Operates Autonomously or Under External Control.
0: Standalone Operation: Configuration Parameters are Loaded from an External EEPROM at Power Up.
1: Externally Controlled Operation: Configuration Parameters are Set by an External Microprocessor or
Test Computer.
2
C Command Code 0x10)
+
to V
DD(HS)
+
and IN
and from IN
–
–
to V
LTC5100
DD(HS)
sn5100 5100fs
35