Datasheet

LMH0041, LMH0051
LMH0071, LMH0341
SNLS272Q –APRIL 2007–REVISED APRIL 2013 www.ti.com
PIN DESCRIPTIONS
Pin Name Type Description
LVDS Input Interface
RX[4:0]+ Output, LVDS LVDS Data Output Pins
RX[4:0]- Five channel wide DDR interface.
RXCLK+ Output, LVDS LVDS Clock Output Pins
RXCLK- DDR Interface.
Serial Data Inputs
RXIN
0
+ Input, Differential Serial differential input Pins
RXIN
0
- Channel 0
RXIN
1
+ Input, Differential Serial differential input Pins
RXIN
1
- Channel 1
Loopthrough Serial Output
TXOUT+ Output, CML Serial Digital Interface Output Pin
Non-Inverting Output
TXOUT- Output, CML Serial Digital Interface Output Pin
Inverting Output
SMBus Interface
SDA I/O, LVCMOS SMBus Data I/O Pin
SCK Input, LVCMOS SMBus Clock Input Pin
SMB_CS Input, LVCMOS SMBus Chip Select Input Pin
Device is selected when High.
Control and Configuration Pins
RESET Input, LVCMOS Reset Input Pin
H = normal mode
L = device in RESET
LOCK Output, LVCMOS PLL LOCK Status Output
H = unlock condition
L = PLL is Locked
DVB_ASI Input, LVCMOS DVB_ASI Select Input
H = DVB_ASI Mode enabled
L = Normal Mode enabled
Loopthru_EN Input, LVCMOS Loopthrough enable Input
H=Reclocked Loopthrogh active
L=Reclocked Loopthrough disabled
RX_MUX_SEL Input, LVCMOS Input multiplexer select
H=RXIN
1
selected
L=RXIN
0
selected
GPIO[2:0] I/O, LVCMOS General Purpose Input / Output
Software configurable I/O pins.
RSVD_H Input, LVCMOS Configuration Input – Must tie High
Pull High via 5 kΩ resistor to V
DD3V3
Analog Inputs
R
SET
Input Serial Loopthrough Output Amplitude Control
Resistor connected from this pin to ground to set the signal amplitude. Nominally 7.87kΩ
for 800mV output (SMPTE).
LF_CP Input Loop Filter Connection
LF_REF Loop Filter Reference
DNC Do Not Connect – Leave Open
Power Supply and Ground
V
DD3V3
Power 3.3V Power Supply connection
V
DDPLL
Power 3.3V PLL Power Supply connection
V
DD2V5
Power 2.5V Power Supply connection
GND Ground Ground connection – The DAP (large center pad) is the primary GND connection for the
device and must be connected to Ground along with the GND pins.
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Product Folder Links: LMH0041 LMH0051 LMH0071 LMH0341