DS100BR111A_14 Datasheet, PDF (4/39 Pages) Texas Instruments – Ultra Low Power 10.3 Gbps 2-Channel Repeaters with Input Equalization and Output De-Emphasis

DS100BR111A
SNLS400C – JANUARY 2012 – REVISED APRIL 2013
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PIN DESCRIPTIONS⁽¹⁾⁽²⁾ (continued)
Pin Name
Status Output
LOS
Pin Number
13
LOS Threshold Input
SD_TH
14
I/O, Type
O, Open
Drain
I, LVCMOS,
Float
(4-Levels)
Power
VDD
21, 22
Power
VIN
GND
15
DAP
Power
Power
Pin Description
When HIGH, indicates Loss of Signal (Default is LOS on INA). Can be modified via
SMBus registers.
The SD_TH pin controls LOS threshold setting;
Assert (mV), Deassert (mV)
20K = 160 mV, 100 mV
Float = 180 mV, 110 mV (Default)
High = 190 mV, 130 mV
Low = 210 mV, 150 mV⁽⁵⁾
Power supply pins
2.5V mode connect to 2.5V
3.3V mode do not connect to any supply voltage. Should be used to attach
external decoupling to device, 100 - 200 nF recommended.
See Applications Information section for additional information.
VIN = 3.3V +/-10% (input to internal LDO regulator)⁽⁶⁾
See Applications Information section for additional information.
Ground pad (DAP - die attach pad).
(5) Using values less than the default level can extend the time required to detect LOS and are not recommended.
(6) Must FLOAT for 2.5V operation.
4
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