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

www.ti.com
5 Pin Configuration and Functions
RUM Package
16-Pin WQFN (Non-SPI)
Top View
LMH0394
SNLS312M – AUGUST 2010 – REVISED JULY 2015
16 15 14 13
V_EE 1
SDI 2
SDI ³
SPI_EN 4
LMH0394
12 AUTO SLEEP
11 SDO
10 SDO
9 VEE
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 Functions – Pin Mode (non-SPI) / SPI_EN = GND / LMH0344 Compatible
PIN
NAME
I/O, TYPE
DESCRIPTION
V_EE
Ground Negative power supply (ground).
SDI
I, Analog Serial data true input.
SDI
I, Analog Serial data complement input.
SPI_EN
I, LVCMOS
SPI register access enable. This pin has an internal pulldown.
H = SPI register access mode.
L = Pin mode.
AEC+
I/O, Analog AEC loop filter external capacitor (1-µF) positive connection (capacitor is optional).
AEC-
I/O, Analog AEC loop filter external capacitor (1-µF) negative connection (capacitor is optional).
BYPASS
I, LVCMOS
Equalization bypass. This pin has an internal pull-down.
H = Equalization is bypassed (no equalization occurs).
L = Normal operation.
MUTE_REF
I, Analog
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.
V_EE
SDO
I, LVCMOS Connect this pin to ground or drive it logic low.
O, LVDS Serial data complement output.
SDO
O, LVDS Serial data true output.
AUTO SLEEP
I, LVCMOS
Auto Sleep. AUTO SLEEP has precedence over MUTE and BYPASS. This pin has an
internal pullup.
H = Device will power down when no input is detected.
L = Normal operation (device will not enter auto power down).
V_CC
MUTE
Power
I, LVCMOS
Positive power supply (+2.5 V).
Output mute. CD may be tied to this pin to inhibit the output when no input signal is present.
MUTE has precedence over BYPASS. This pin has an internal pull-down.
H = Outputs forced to a muted state.
L = Outputs enabled.
Carrier detect.
CD
O, LVCMOS H = No input signal detected.
L = Input signal detected.
V_CC
Power
Positive power supply (2.5 V).
V_EE
Ground Connect exposed DAP to negative power supply (ground). See Figure 22 for layout example.
Copyright © 2010–2015, Texas Instruments Incorporated
Product Folder Links: LMH0394
Submit Documentation Feedback
3