qlx4600-sl30 Intersil Corporation, qlx4600-sl30 Datasheet

no-image

qlx4600-sl30

Manufacturer Part Number
qlx4600-sl30
Description
Quad Lane Extender
Manufacturer
Intersil Corporation
Datasheet
Quad Lane Extender
QLx4600-SL30
The QLx4600-SL30 is a settable quad receive-side
equalizer with extended functionality for advanced
protocols operating with line rates up to 6.25Gb/s such
as InfiniBand (SDR and DDR) and 10GBase-CX4. The
QLx4600-SL30 compensates for the frequency
dependent attenuation of copper twin-axial cables,
extending the signal reach up to 30m on 24AWG cable.
The small form factor, highly-integrated quad design is
ideal for high-density data transmission applications
including active copper cable assemblies. The four
equalizing filters within the QLx4600-SL30 can each be
set to one of 32 compensation levels, providing optimal
signal fidelity for a given media and length. The
compensation level for each filter can be set by either (a)
three external control pins or (b) a serial bus interface.
When the external control pins are used, 18 of the 32
boost levels are available for each channel. If the serial
bus is used, all 32 compensation levels are available.
Operating on a single 1.2V power supply, the
QLx4600-SL30 enables per channel throughputs of up to
6.25Gb/s while supporting lower data rates including 5,
4.25, 3.125, and 2.5Gb/s. The QLx4600-SL30 uses
current mode logic (CML) inputs/outputs and is packaged
in a 4mmx7mm 46 lead QFN. Individual lane LOS
support is included for module applications.
Typical Application Circuit
November 19, 2009
FN6981.1
1
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Supports data rates up to 6.25Gb/s
• Low power (78mW per channel)
• Low latency (<500ps)
• Four equalizers in a 4mmx7mm QFN package for
• Each equalizer boost is independently pin selectable
• Beacon signal support and line silence preservation
• 1.2V supply voltage
• Individual lane LOS support
Applications
• QSFP active copper cable modules
• InfiniBand (SDR and DDR)
• 10GBase-CX4
• XAUI and RXAUI
• SAS (2.0)
• High-speed active cable assemblies
• High-speed printed circuit board (PCB) traces
Benefits
• Thinner gauge cable
• Extends cable reach greater than 3x
• Improved BER
straight route-through architecture and simplified
routing
and programmable
All other trademarks mentioned are the property of their respective owners.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2009. All Rights Reserved

Related parts for qlx4600-sl30

qlx4600-sl30 Summary of contents

Page 1

... If the serial bus is used, all 32 compensation levels are available. Operating on a single 1.2V power supply, the QLx4600-SL30 enables per channel throughputs 6.25Gb/s while supporting lower data rates including 5, 4.25, 3.125, and 2.5Gb/s. The QLx4600-SL30 uses current mode logic (CML) inputs/outputs and is packaged in a 4mmx7mm 46 lead QFN ...

Page 2

... IPC/JEDEC J STD-020. Pin Configuration 2 QLx4600-SL30 TEMP. RANGE (° + QFN 7” Prod. Tape & Reel; Qty 1,000 QFN 7” Sample Reel; Qty 100 QLx4600-SL30 (46 LD 4x7 QFN) TOP VIEW IN1[ IN1[N] ...

Page 3

... Equalizer 2 differential output, CML. The use of 100nF low ESL/ESR MLCC capacitor with at least 4GHz frequency response is recommended. OUT1[N,P] 36, 37 Equalizer 1 differential output, CML. The use of 100nF low ESL/ESR MLCC capacitor with at least 4GHz frequency response is recommended. BGREF 38 External bandgap reference resistor. Recommended value of 6.04kΩ ±1%. 3 QLx4600-SL30 DESCRIPTION FN6981.1 November 19, 2009 ...

Page 4

... Serial data clock, CMOS logic. Synchronous clock for serial data on DI and DO pins. Data latched on the rising clock edge. Clock speed is recommended to be between 10MHz and 20MHz. Internally pulled down. EXPOSED - Exposed ground pad. For proper electrical and thermal performance, this pad should be PAD connected to the PCB ground plane. 4 QLx4600-SL30 DESCRIPTION FN6981.1 November 19, 2009 ...

Page 5

... Resistance DC Single-Ended Input Resistance Input Return Loss (Differential) 5 QLx4600-SL30 Thermal Information Thermal Resistance (Typical QFN Package (Note 1 Operating Ambient Temperature Range 0°C to +70°C Storage Ambient Temperature Range . . . . . -55°C to +150°C Maximum Junction Temperature +125°C Pb-Free Reflow Profile see link below http://www ...

Page 6

... Lane-to-Lane Skew Propagation Delay LOS Assert Time LOS De-Assert Time Data-to-Line Silence t DS Response Time 6 QLx4600-SL30 = 1.2V +25°C, and 1.1V to 1.3V 0°C to +70°C. (Continued CONDITION 50MHz to 3.75GHz 50MHz to 3.75GHz Active data transmission mode; Measured differentially at OUT[k]P and OUT[k]N with 50Ω ...

Page 7

... Timing Difference (SAS NOTES: 3. After channel loss, differential amplitudes at QLx4600-SL30 inputs must meet the input voltage range specified in “Absolute Maximum Ratings” on page 5. 4. Temperature = +25° 1.2V Output residual jitter is the difference between the total jitter at the lane extender output and the total jitter of the transmitted signal (as measured at the input to the channel) ...

Page 8

... The loss characteristics of these test channels are plotted as a function of frequency in Figure 2. The received signal at the output of these test channels was then processed by the QLx4600-SL30 before being passed to a receiver. Eye diagram measurements were made with 4000 waveform acquisitions and include random jitter ...

Page 9

... TWIN-AXIAL CABLE (CABLE C) (NOTE 13), 5Gb/s 9 QLx4600-SL30 (Continued) FIGURE 5. QLx4600-SL30 OUTPUT AFTER 20m OF 24AWG TWIN-AXIAL CABLE (CABLE A), 5Gb/s FIGURE 7. QLx4600-SL30 OUTPUT AFTER 12m OF 30AWG TWIN-AXIAL CABLE (CABLE B), 5Gb/s FIGURE 9. QLx4600-S30 OUTPUT AFTER 20m OF 28AWG TWIN-AXIAL CABLE (CABLE C) (NOTE 13), 5Gb/s 40ps/div 40ps/div 40ps/div FN6981 ...

Page 10

... FIGURE 14. RECEIVED SIGNAL AFTER 40" FR4, 6.25Gb/s 10 QLx4600-SL30 (Continued) FIGURE 11. QLx4600-SL30 OUTPUT AFTER 30m OF 24AWG TWIN-AXIAL CABLE (NOTE 13), 5Gb/s FIGURE 13. QLx4600-SL30 OUTPUT AFTER 15m OF 28AWG TWIN-AXIAL CABLE (CABLE D) (NOTE 13), 6.25Gb/s FIGURE 15. QLx4600-SL30 OUTPUT AFTER 40" FR4, 6.25Gb/s 40ps/div 32ps/div 32ps/div FN6981.1 November 19, 2009 ...

Page 11

... FIGURE 16. INPUT COMMON-MODE RETURN LOSS 0 -5 -10 -15 -20 -25 -30 -35 0 0.5 1 1.5 2 Frequency (GHz) FIGURE 18. INPUT DIFFERENTIAL RETURN LOSS FIGURE 20. DIFFERENTIAL CROSSTALK BETWEEN ADJACENT INPUT CHANNELS NOTE: 13. Differential transmit amplitude = 1200mV 11 QLx4600-SL30 (Continued -10 -15 -20 -25 -30 2.5 3 3.5 4 FIGURE 17. OUTPUT COMMON-MODE RETURN LOSS 0 -5 -10 -15 -20 Channel 1 -25 ...

Page 12

... IN[k] [P,N] FIGURE 22. FUNCTIONAL DIAGRAM OF A SINGLE CHANNEL WITHIN THE QLx4600-SL30 Operation The QLx4600-SL30 is an advanced quad lane-extender for high-speed interconnects. A functional diagram of one of the four channels in the QLx4600-SL30 is shown in Figure 22. In addition to a robust equalization filter to compensate for channel loss and restore signal fidelity, ...

Page 13

... Line silence is commonly broken by the limiting amplification in other equalizers. This disruption can be detrimental in many systems that rely on line silence as part of the protocol. The QLx4600-SL30 contains special lane management capabilities to detect and preserve periods of line silence while still providing the fidelity- enhancing benefits of limiting amplification during active data transmission ...

Page 14

... Each 5-bit word determines which of 32 boost levels to use for the corresponding equalizer. Register 1 instructs the QLx4600-SL30 to use registers 2 through 21 to set the boost level rather than the control pins CP[k][A,B,C]. Both options have their relative advantages. The control ...

Page 15

... Control Pin Boost Setting When register 1 of the QLx4600-SL30 is zero (the default state on power-up), the voltages at the CP pins are used to determine the boost level of each channel. For each of the four channels, k, the [A], [B], and [C] control pins (CP[k]) are associated with a 3-bit non binary word. ...

Page 16

... QLx4600-SL30. Figure 27 shows an exemplary timing diagram for the signals on these pins. The serial bus can be used to program a single QLx4600-SL30 according to the following steps: 1. The ENB pin is pulled ‘LOW’. - While this pin is ‘LOW’, the data input on DI are read into registers but not yet latched ...

Page 17

... ENB t CLK DI FIGURE 27. TIMING DIAGRAM FOR PROGRAMMING THE INTERNAL REGISTERS OF THE QLx4600-SL30 Programming Multiple QLx4600-SL30 Devices The serial bus interface provides a simple means of setting the equalizer boost levels with a minimal amount of board circuitry. Many of the serial interface signals can be shared among the QLx4600-SL30 devices on a board and two options are presented in this section ...

Page 18

... Clock ENB FIGURE 30. SERIAL BUS PROGRAMMING MULTIPLE QLx4600-SL30 DEVICES USING DI/DO CARRYOVER ENB t SCK CLK t t SDI HDI DI R21 R20 QLx4600-SL30 (D) FIGURE 31. TIMING DIAGRAM FOR PROGRAMMING MULTIPLE QLx4600-SL30 DEVICES USING DI/DO CARRYOVER 18 QLx4600-SL30 20 Clock Cycles st 21 Rising Edge t CQ QLx4600-SL30 QLx4600-SL30 (B) ENB DI ENB ...

Page 19

... Detection Threshold (DT) Pin Functionality The QLx4600-SL30 is capable of maintaining periods of line silence on any of its four channels by monitoring each channel for loss of signal (LOS) conditions and subsequently muting the outputs of a respective channel when such a condition is detected. A reference current applied to the detection threshold (DT) pin is used to set the LOS threshold of the internal signal detection circuitry ...

Page 20

... Typical Application Reference Designs Figures 33 and 34 show reference design schematics for a QLx4600-SL30 evaluation board with an SMA connector interface. Figure 33 shows the schematic for the case when the equalizer boost level is set via the CP pins. Figure 34 shows the schematic for the case when the level is set via the serial bus interface. ...

Page 21

... Typical Application Reference Designs Figures 33 and 34 show reference design schematics for a QLx4600-SL30 evaluation board with an SMA connector interface. Figure 33 shows the schematic for the case when the equalizer boost level is set via the CP pins. Figure 34 shows the schematic for the case when the level is set via the serial bus interface. ...

Page 22

... Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see 22 QLx4600-SL30 www.intersil.com/product_tree www.intersil.com/design/quality www.intersil.com FN6981.1 ...

Page 23

... LEAD THIN QUAD FLAT NO-LEAD PLASTIC PACKAGE (TQFN) Rev 0, 9/09 4.00 6 PIN 1 INDEX AREA (4X) 0.05 TOP VIEW 0.70 ±0.05 SIDE VIEW ( 3. 2.50 5.50 ) TYPICAL RECOMMENDED LAND PATTERN 23 QLx4600-SL30 A B SIDE VIEW SEE DETAIL "X" 0. SEATING PLANE 0.05 C NOTES: 1. Dimensions are in millimeters. Dimensions Dimensioning and tolerancing conform to AMSE Y14.5m-1994. ...

Related keywords