LMH0394_15 Datasheet, PDF (4/35 Pages) Texas Instruments – 3G HD/SD SDI Low Power Extended Reach Adaptive Cable Equalizer

LMH0394
SNLS312M – AUGUST 2010 – REVISED JULY 2015
www.ti.com
RUM Package
16-Pin WQFN (SPI)
Top View
16 15 14 13
V_{EE 1}
SDI 2
SDI ³
SPI_EN 4
LMH0394
12 MISO
11 SDO
10 SDO
9 SS
56 7 8
DAP = V_EE
NO.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DAP
PIN
NAME
V_EE
SDI
SDI
SPI_EN
AEC+
AEC-
CD
MUTE_REF
SS (SPI)
SDO
SDO
MISO (SPI)
V_CC
SCK (SPI)
MOSI (SPI)
V_CC
V_EE
Pin Functions – SPI Mode / SPI_EN = V_CC
I/O, TYPE
DESCRIPTION
Ground
I, Analog
I, Analog
I, LVCMOS
I/O, Analog
I/O, Analog
O, LVCMOS
I, Analog
I, LVCMOS
O, LVDS
O, LVDS
O, LVCMOS
Power
I, LVCMOS
I, LVCMOS
Power
Ground
Negative power supply (ground).
Serial data true input.
Serial data complement input.
SPI register access enable. This pin has an internal pull-down.
H = SPI register access mode.
L = Pin mode.
AEC loop filter external capacitor (1 µF) positive connection (capacitor is optional).
AEC loop filter external capacitor (1 µF) negative connection (capacitor is optional).
Carrier detect.
H = No input signal detected.
L = Input signal detected.
Mute reference input. Sets the threshold for CD and (with CD tied to MUTE) determines the
maximum cable to be equalized before muting. MUTE_REF may be either unconnected or
connected to ground for normal CD operation.
SPI slave select. This pin has an internal pullup.
Serial data complement output.
Serial data true output.
SPI Master Input / Slave Output. LMH0394 control data transmit.
Positive power supply (2.5 V).
SPI serial clock input.
SPI Master Output / Slave Input. LMH0394 control data receive. This pin has an internal
pulldown.
Positive power supply (2.5 V).
Connect exposed DAP to negative power supply (ground). See Figure 22 for layout example.
4
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