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SN75LVCP600
SLLSE63A – DECEMBER 2010 – REVISED MAY 2016
SN75LVCP600 6-Gbps SATA PCB and Cable Equalizer
1 Features
3 Description
•
•
•
•
•
The SN75LVCP600 is a versatile single channel,
SATA Express signal conditioner supporting data
rates up to 6 Gbps. The device supports SATA Gen
1, 2, and 3 specifications as well as PCIe 1.0, 2.0,
and 3.0. The SN75LVCP600 operates from a single
3.3-V supply and has 100-Ω line termination with selfbiasing feature, making the device suitable for AC
coupling. The inputs incorporate an out-of-band
(OOB) detector, which automatically squelches the
output when the input differential voltage falls below
threshold while maintaining a stable common-mode
voltage. The device is also designed to handle
spread spectrum clocking (SSC) transmission per
SATA standard.
1
•
•
•
•
•
•
•
SATA Express Support
Selectable Equalization and De-Emphasis
Hot Plug Capable
Receiver Detect and OOB Support
Multirate Operation: 1.5 Gbps, 3 Gbps, and
6 Gbps
Suitable to Receive 6-Gbps Data Over Up to 40
Inches (1 Meter) of FR4
Compensates Up to 14-dB Loss on the Receive
Side and 1.2-dB Loss on the Transmit Side at
3 GHz
Integrated Output Squelch
Auto Low Power Feature Lowers Power by > 90%
– < 100 mW (Active Mode, Typical)
– < 11 mW (Auto Low Power Mode, Typical)
Single 3.3-V Supply
High Protection Against ESD Transient
– HBM: 6 kV
– CDM: 1.5 kV
Ultra-Small Footprint: 2 mm × 2 mm WSON
Package
The SN75LVCP600 handles interconnect losses at its
input with selectable equalization settings that can be
programmed to match the loss in the channel. For
data rates of 3 Gbps and lower the SN75LVCP600
equalizes signals for a span of up to 50 inches of
FR4 board material. For data rates of 8 Gbps the
device compensates up to 40 in of FR4 material. The
equalization level is controlled by the setting of the
signal control pin EQ.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
2 Applications
SN75LVCP600
•
•
•
•
•
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Notebooks
Desktops
Docking Stations
Servers
Workstations
Typical Application
WSON (8)
2.00 mm × 2.00 mm
Data Flow Block Diagram
Vcc[1]
GND[5]
VBB = 1.7 V TYP
LVCP600
RT
RX+ [2]
SATA
Sink
RT
RX- [3]
HDD
TX- [6]
OOB
Detect
EQ
Driver
EQ
TX+ [7]
Equalizer
SATA
Host
EQ
CTRL
SATA Host
SAS
Cable
EQ
[4]
Copyright © 2016, Texas Instruments Incorporated
DE
[8]
Copyright © 2016, Texas Instruments Incorporated
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
SN75LVCP600
SLLSE63A – DECEMBER 2010 – REVISED MAY 2016
www.ti.com
Table of Contents
1
2
3
4
5
6
7
8
9
Features ..................................................................
Applications ...........................................................
Description .............................................................
Revision History.....................................................
Description (continued).........................................
Pin Configuration and Functions .........................
Specifications.........................................................
1
1
1
2
3
3
4
7.1
7.2
7.3
7.4
7.5
7.6
7.7
4
4
4
4
4
6
8
Absolute Maximum Ratings ......................................
ESD Ratings..............................................................
Recommended Operating Conditions.......................
Thermal Information ..................................................
Electrical Characteristics...........................................
Timing Requirements ................................................
Typical Characteristics ..............................................
Parameter Measurement Information .................. 9
Detailed Description ............................................ 10
9.1 Overview ................................................................. 10
9.2 Functional Block Diagram ....................................... 10
9.3 Feature Description................................................. 10
9.4 Device Functional Modes........................................ 11
10 Application and Implementation........................ 12
10.1 Application Information.......................................... 12
10.2 Typical Application ............................................... 12
11 Power Supply Recommendations ..................... 15
12 Layout................................................................... 16
12.1 Layout Guidelines ................................................. 16
12.2 Layout Example .................................................... 18
13 Device and Documentation Support ................. 20
13.1
13.2
13.3
13.4
13.5
13.6
Device Support......................................................
Receiving Notification of Documentation Updates
Community Resources..........................................
Trademarks ...........................................................
Electrostatic Discharge Caution ............................
Glossary ................................................................
20
20
20
20
20
20
14 Mechanical, Packaging, and Orderable
Information ........................................................... 20
4 Revision History
Changes from Original (December 2010) to Revision A
Page
•
Added Device Information table, ESD Ratings table, Feature Description section, Device Functional Modes,
Application and Implementation section, Power Supply Recommendations section, Layout section, Device and
Documentation Support section, and Mechanical, Packaging, and Orderable Information section. .................................... 1
•
Changed RX+ from I, VML to I, CML in Pin Functions table.................................................................................................. 3
•
Changed Noninverting and inverting VML differential inputs to Noninverting and inverting CML differential inputs in
the Pin Functions table Description ........................................................................................................................................ 3
•
Changed RX- from I, VML to I, CML in Pin Functions table................................................................................................... 3
•
Changed TX+ from I, VML to O, VML in Pin Functions table ................................................................................................ 3
•
Changed TX- from I, VML to O, VML in Pin Functions table ................................................................................................. 3
•
Added Parameter Measurement Information section ............................................................................................................. 9
•
Changed RX to Rx0. in Figure 7 ............................................................................................................................................ 9
2
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SLLSE63A – DECEMBER 2010 – REVISED MAY 2016
5 Description (continued)
Two de-emphasis levels can be selected on the transmit side to provide 0 dB or 1.2 dB of additional highfrequency loss compensation at the output.
The device is hot-plug capable(1) preventing device damage under device hot-insertion such as async signal plug
and removal, unpowered plug and removal, powered plug and removal, or surprise plug and removal.
(1) Requires use of AC coupling capacitors at differential inputs and outputs.
6 Pin Configuration and Functions
DRF Package
8-Pin WSON
Top View
VCC
1
8
DE
7
TX+
LVCP600
2
RX-
3
6
TX-
EQ
4
5
GND
1
RX+
Package Thermal Pad
Pin Functions
PIN
NAME
NO.
TYPE (1)
DESCRIPTION
HIGH SPEED DIFFERENTIAL I/O
RX+
2
I
RX–
3
I
TX+
7
O
TX–
6
O
Noninverting and inverting VML differential outputs. These pins are tied to an internal voltage bias by
dual termination resistor circuit.
Noninverting and inverting CML differential inputs. These pins are tied to an internal voltage bias by dual
termination resistor circuit.
CONTROL PINS
EQ
4
I
Selects equalization settings per Table 1. Internally tied to GND.
DE
8
I
Selects de-emphasis settings per Table 1. Internally tied to GND.
POWER
VCC
1
P
Positive supply must be 3.3 V ±10%
GND
5
G
Supply ground
(1)
G = Ground, I = Input, O = Output, P = Power
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SLLSE63A – DECEMBER 2010 – REVISED MAY 2016
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7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
Supply voltage, VCC (2)
Voltage
(2)
MAX
UNIT
4
V
V
Differential I/O
–0.5
4
Control I/O
–0.5
VCC + 0.5
–65
150
Storage temperature, Tstg
(1)
MIN
–0.5
°C
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only and functional operation of the device at these or any conditions beyond those indicated under Recommended Operating
Conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
All voltage values, except differential voltages, are with respect to network ground pin.
7.2 ESD Ratings
VALUE
Electrostatic
discharge
V(ESD)
(1)
(2)
Human body model (HBM), per ANSI/ESDA/JEDEC JS-001, all pins
(1)
UNIT
±6000
Charged device model (CDM), per JEDEC specification JESD22-C101, all pins (2)
V
±1500
JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
7.3 Recommended Operating Conditions
typical values for all parameters are at VCC = 3.3 V and TA = 25°C; all temperature limits are specified by design
VCC
Supply voltage
Coupling capacitor
TA
Operating free-air temperature
MIN
TYP
MAX
3
3.3
3.6
V
75
100
200
nF
85
°C
0
UNIT
7.4 Thermal Information
SN75LVCP600
THERMAL METRIC (1)
DRF (WSON)
UNIT
8 PINS
RθJA
Junction-to-ambient thermal resistance
97.8
°C/W
RθJCtop
Junction-to-case (top) thermal resistance
81.9
°C/W
RθJB
Junction-to-board thermal resistance
65.6
°C/W
ψJT
Junction-to-top characterization parameter
1.3
°C/W
ψJB
Junction-to-board characterization parameter
65.6
°C/W
RθJCbot
Junction-to-case (bottom) thermal resistance
19.1
°C/W
(1)
For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
7.5 Electrical Characteristics
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
DEVICE PARAMETERS
ICCMax-s
Active mode supply current
EQ/DE = NC, K28.5 pattern at 6 Gbps, VID = 700 mVpp
29
40
ICCPS
Auto power save mode ICC
When auto low power conditions are met
3.3
5.9
Maximum data rate
4
6
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mA
mA
Gbps
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Electrical Characteristics (continued)
over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
OOB
VOOB
Input OOB threshold
90
mVpp
DVdiffOOB
OOB differential delta
F = 750 MHz
50
70
25
mV
DVCMOOB
OOB common-mode delta
50
mV
CONTROL LOGIC
VIH
High-level input voltage
VIL
Low-level input voltage
For all control pins
1.4
V
VINHYS
Input hysteresis
IIH
High-level input current
VIH = VCC (DE/EQ)
20
μA
IIL
Low-level input current
VIL = 0 V (DE/EQ)
10
μA
115
Ω
0.5
V
115
mV
RECEIVER AC/DC
ZDIFFRX
Differential input impedance
85
ZSERX
Single-ended input impedance
40
VCMRX
Common-mode voltage
RLDiffRX
RXDiffRLSlope
RLCMRX
VdiffRX
IBRX
Common-mode return loss
Differential input voltage PP
Impedance balance
Ω
1.7
f = 150 MHz to 300 MHz
18
26
f = 300 MHz to 600 MHz
14
22
10
17
f = 1.2 GHz to 2.4 GHz
8
12
f = 2.4 GHz to 3 GHz
3
Differential mode return loss (RL) f = 600 MHz to 1.2 GHz
Differential mode RL slope
100
f = 300 MHz to 6 GHz (see Figure 7)
V
dB
11
–13
f = 150 MHz to 300 MHz
5
9.4
f = 300 MHz to 600 MHz
5
17
f = 600 MHz to 1.2 GHz
2
18
f = 1.2 GHz to 2.4 GHz
1
9.9
f = 2.4 GHz to 3 GHz
1
8.6
f = 1.5 GHz and 3 GHz
120
dB/dec
dB
1600
f = 150 MHz to 300 MHz
30
41
f = 300 MHz to 600 MHz
30
41
f = 600 MHz to 1.2 GHz
20
34
f = 1.2 GHz to 2.4 GHz
10
24
f = 2.4 GHz to 3 GHz
10
26
f = 3 GHz to 5 GHz
4
18
f = 5 GHz to 6.5 GHz
4
18
100
mVpp
dB
TRANSMITTER AC/DC
ZdiffTX
Pair differential impedance
85
ZSETX
Single-ended input impedance
40
VTXtrans
RLDiffTX
TXDiffRLSlope
Sequencing transient voltage
Differential mode return loss
Differential mode RL slope
Transient voltages on the serial data bus during power
sequencing (lab load)
Ω
–1.2
0.3
f = 150 MHz to 300 MHz
13
22
f = 300 MHz to 600 MHz
8
21
f = 600 MHz to 1.2 GHz
6
19
f = 1.2 GHz to 2.4 GHz
6
14
f = 2.4 GHz to 3 GHz
3
f = 300 MHz to 3 GHz (see Figure 7)
Ω
122
1.2
V
dB
14
–13
dB/dec
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Electrical Characteristics (continued)
over recommended operating conditions (unless otherwise noted)
PARAMETER
RLCMTX
IBTX
Common-mode return loss
Impedance balance
DiffVppTX
Differential output voltage swing
TEST CONDITIONS
MIN
VCMTX
TX AC CM voltage
UNIT
f = 150 MHz to 300 MHz
5
20
f = 300 MHz to 600 MHz
5
16
f = 600 MHz to 1.2 GHz
2
13
f = 1.2 GHz to 2.4 GHz
1
8
f = 2.4 GHz to 3 GHz
1
8
f = 150 MHz to 300 MHz
30
38
f = 300 MHz to 600 MHz
30
38
f = 600 MHz to 1.2 GHz
20
33
f = 1.2 GHz to 2.4 GHz
10
25
f = 2.4 GHz to 3 GHz
10
25
f = 3 GHz to 5 GHz
4
21
f = 5 GHz to 6.5 GHz
4
21
400
650
900
15
50
mVpp
f = 3 GHz (under no interconnect loss)
At 1.5 GHz
VCMAC_TX
TYP MAX
dB
dB
mVpp
At 3 GHz
10
26
dBmV
(rms)
At 6 GHz
12
30
dBmV
(rms)
Common-mode voltage
1.7
V
TRANSMITTER JITTER (1)
DJTX
Residual deterministic jitter
VID = 500 mVpp, UI = 333 ps, K28.5 control character,
see Figure 8
0.12
0.19
RJTX
Random jitter
VID = 500 mVpp, UI = 333 ps, K28.7 control character,
see Figure 8
1
2
DJTX
Residual deterministic jitter
VID = 500 mVpp, UI = 167 ps, K28.5 control character,
see Figure 8
0.12
0.34
RJTX
Random jitter
VID = 500 mVpp, UI = 167 ps, K28.7 control character,
see Figure 8
0.95
2
(1)
UIpp
ps-rms
UIpp
ps-rms
TJ = (14.1×RJSD + DJ) where RJSD is one standard deviation value of RJ Gaussian distribution. Jitter measurement is at the SATA
connector and includes jitter generated at the package connection on the printed-circuit board, and at the board interconnect as shown
in Figure 8.
7.6 Timing Requirements
MIN
TYP MAX
UNIT
DEVICE PARAMETERS
tPDelay
Propagation delay
Measured using K28.5 pattern (see Figure 1)
AutoLPENTRY
Auto low power entry time
Electrical idle at input (see Figure 3)
275
11
350
ps
AutoLPEXIT
Auto low power exit time
After first signal activity (see Figure 3)
33
50
ns
tOOB1
OOB mode enter
tOOB2
OOB mode exit
See Figure 2
1
5
ns
See Figure 2
1
5
ns
75
ps
30
ps
μs
OOB
RECEIVER AC/DC
t20-80RX
Rise and fall time
Rise times and fall times measured between 20% and
80% of the signal. SATA 3 Gbps speed measured 1" from
device pin.
tskewRX
Differential skew
Difference between the single-ended mid-point of the RX+
signal rising and falling edge, and the single-ended midpoint of the RX– signal falling and rising edge.
62
TRANSMITTER AC/DC
6
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Timing Requirements (continued)
MIN
t20-80TX
Rise and fall time
Rise times and fall times measured between 20% and
80% of the signal. At 3 Gbps under no load conditions
measured at the pin.
tskewTX
Differential skew
Difference between the single-ended mid-point of the TX+
signal rising edge and falling edge, and the single-ended
mid-point of the TX– signal falling edge and rising edge,
D1, D0 = VCC
txR/Flmb
TX rise and fall imbalance
At 3 Gbps
txAmplmb
TX amplitude imbalance
44
TYP MAX
UNIT
58
85
ps
2
15
ps
6%
20%
1%
10%
47.5
%
48.3
%
1.5%
3%
TRANSMITTER JITTER
46.5
%
Rise and Fall time
Rise and Fall mismatch
IN
tPDelay
tPDelay
OUT
Figure 1. Propagation Delay Timing Diagram
IN+
Vcm
50 mV
INtOOB2
tOOB1
OUT+
Vcm
OUT-
Figure 2. OOB Enter and Exit Timing
RX1, 2P
VCMRX
RX1, 2N
tOOB1
AutoLPEXIT
TX1,2P
VCMTX
TX1,2N
AutoLPENTRY
Power Saving
Mode
Figure 3. Auto Low Power Mode Entry and Exit Timing
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7.7 Typical Characteristics
50
30
A function of input trace
length on 4mil FR-4
45
1.5 Gbps
25
35
Deterministic Jitter - psPP
Deterministic Jitter - psPP
40
42” EQ=1, DE=1
30
32” EQ=1, DE=1
25
20
24” EQ=1, DE=0
15
10
20
3 Gbps
15
6 Gbps
10
5
Function of data rate after equalizing for
32” of input FR-4 trace, EQ = 1, DE = 1
5
16” EQ=1, DE=0
0
1.5
8” EQ=1, DE=0
3.0
Data Rate - Gbps
6.0
Figure 4. Deterministic Jitter vs Data Rate
0
400
500
600
700
Launch Amplitude - mVPP
800
Figure 5. Deterministic Jitter vs Launch Amplitude
0.41
3 Gbps
VOD Output Amplitude - VPP
0.40
0.39
1.5 Gbps
0.38
0.37
6 Gbps
0.36
0.35
0.34
0.33
VID = 500 mVPP, EQ = 1, DE = 1
0.32
8
16
24
32
Trace Length on 4 mil FR-4 - Inches
40
Figure 6. VOD Output Amplitude vs Trace Length
8
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8 Parameter Measurement Information
-RL
dB
Rx0.
TX
0.3
4
Log Frequency - GHz
6
Figure 7. TX, RX Differential Return Loss Limits
Jitter
Measurement
CP
40" 4mil
Stripline
AWG
4" 4 mil Stripline
Figure 8. Jitter Measurement Test Condition
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SN75LVCP600
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9 Detailed Description
9.1 Overview
The SN75LVCP600 is a single-channel, SATA Express, and PCIe signal conditioner supporting data rates up to
6 Gbps. The device supports SATA Gen 1, 2, and 3 specifications as well as PCIe 1, 2, and 3. The
SN75LVCP600 operates from a single 3.3-V supply and has 100-Ω line termination with self-biasing feature,
making the device suitable for AC coupling. The inputs incorporate an out-of-band (OOB) detector, which
automatically squelches the output when the input differential voltage falls below threshold while maintaining a
stable common-mode voltage. The device is also designed to handle spread spectrum clocking (SSC)
transmission per SATA standard. The SN75LVCP600 handles interconnect losses at its input with selectable
equalization settings that are programmable to match the loss in the channel.
For data rates of 3 Gbps and lower the SN75LVCP600 equalizes signals for a span of up to 50 inches of FR4.
For data rates of 8 Gbps the device compensates up to 40 inches of FR4.
The device is hot-plug capable preventing device damage under device hot-insertion such as async signal plug
or removal, unpowered plug or removal, powered plug or removal, or surprise plug or removal.
9.2 Functional Block Diagram
Vcc[1]
GND[5]
VBB = 1.7 V TYP
LVCP600
RT
RX+ [2]
TX+ [7]
Driver
Equalizer
RT
RX- [3]
TX- [6]
OOB
Detect
CTRL
EQ
[4]
DE
[8]
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9.3 Feature Description
9.3.1 Input Equalization
The SN75LVCP600 supports programmable equalization in its front stage; Table 1 lists the equalization settings.
The input equalizer is designed to recover a signal even when no eye is present at the receiver and effectively
supports FR4 trace at the input anywhere from 4" to 40" at SATA 6G speed.
Table 1. EQ and DE Settings
EQUALIZATION
(at 6 Gbps)
DE
0 (default)
7 dB
0 (default)
0 dB
1
14 dB
1
–1.2 dB
EQ
10
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DE-EMPHASIS
(at 6 Gbps)
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Mid Plane / Back Plane
SATA Host
SATA Device
10 µs. The device
enters and exits Low Power Mode by actively monitoring input signal (VIDpp) level. When the input signal is in the
electrical idle state, that is, VIDpp < 50 mV and stays in this state for > 10 µs, the device automatically enters the
low power state. In this state the output is driven to VCM and the device selectively shuts off internal circuitry to
lower power by > 90% of its normal operating power. While in ALP mode the device continues actively to monitor
input signal levels. When the input signal exceeds the SATA OOB upper threshold level, the device reverts to the
active state. Exit time from Auto Low Power Mode is < 50 ns (maximum). See Auto Low Power.
9.3.3 Out-of-Band (OOB) Support
The squelch detector circuit within the device enables full detection of OOB signaling as specified in the SATA
spec. When differential signal amplitude at the receiver input is 50 mVpp or less, the output is squelched.
Differential signal amplitude of 90 mVpp or more is detected as an activity and therefore passed to the output
indicating activity. Squelch circuit ON/OFF time is 5 ns (maximum). While in squelch mode outputs are held to
VCM.
9.4 Device Functional Modes
9.4.1 Active
Active mode is the normal operating mode. When power is applied to the device, and the differential input signal
to the receiver is greater than 90 mVpp, the device is in active mode and meets all the specifications in the data
sheet.
9.4.2 Squelch
When the device is powered, and the differential input signal to the receiver is less than 50 mVpp, the device is in
squelch mode. In squelch mode the transmitter outputs are both set to VCMTX or 1.7 V.
9.4.3 Auto Low Power
When the device is powered and the differential input signal to the receiver has been less than 50 mVpp for
greater than 10 ns, the device transitions to Auto Low Power (ALP) mode. In ALP, the transmitter outputs are
both set to VCMTX. In addition, while in ALP, the device shuts off internal circuitry to lower power to less than
10% of the power in the Active mode.
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10 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
10.1 Application Information
The SN75LVCP600 is a single-channel SATA redriver and signal conditioner supporting data rates up to 6 Gbps.
The inputs incorporate an out-of-band (OOB) detector, which automatically squelches the output while
maintaining a stable common-mode voltage compliant to the SATA link.
10.2 Typical Application
3.3 V
8
7
3
6
4
10 nF
6
3
1
5
4
7
2
8
1
10 nF
5
LVCP600
3.3 V
10 nF
10 nF
10 nF
0.01 mF
0.1 mF
1 mF
LVCP600
10 nF
SATA Sink
SATA Host
1
1
2
0.01 mF
0.1 mF
1 mF
10 nF
Note:
1) Place supply caps close to device pin
2) EQ and DE selection at 7 dB and 0dB respectively
3) Actual EQ /DE settings will depend on device placement relative to
host and SATA connector
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Figure 10. Typical Device Implementation
10.2.1 Design Requirements
This design requires layout flexibility to place 0-Ω resistors. If a redriver is needed, go to step 3 in Detailed
Design Procedure.
Table 2. Design Parameters
DESIGN PARAMETER
12
VALUE
VCC
3.3 V
ICC
29 mA
Input voltage
120 mVpp to 1.6 Vpp
Output voltage
400 mVpp to 900 mVpp
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Product Folder Links: SN75LVCP600
SN75LVCP600
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SLLSE63A – DECEMBER 2010 – REVISED MAY 2016
10.2.2 Detailed Design Procedure
The LVCP600 allows the user to take the guess work of using a signal conditioning device in a SATA link. With
the SN75LVCP600, the user has the option to use or remove the device based on signal conditioning needs.
See Figure 11.