4 Channel 6Gbps SAS/SATA
Signal Repeater
®
89HP0604SB
Data Sheet
Device Overview
The IDT 89HP0604SB (P0604SB) is a 6Gbps SAS/SATA® Repeater
device featuring IDT EyeBoost™ technology that compensates for cable
and board trace attenuations and ISI jitter, thereby extending connection
reach. The device is optimized for SAS/SATA high speed serial data
streams and contains four data channels, each able to process 6Gbps
transmission rates. Each channel consists of an input equalizer and
amplifier, signal detection with glitch filter, as well as programmable
output swing and de-emphasis. Allowing for application specific
optimization, the P0604SB, with its configurable receiver and transmitter
features, is ideal for SAS/SATA applications using a wide combination of
cables and board trace materials.
All modes of active data transfer are designed with minimized power
consumption. In full shutdown mode, the part consumes less than
40mW in worst case environmental conditions.
Features
Compensates for cable and PCB trace attenuation and ISI
jitter
Programmable receiver equalization up to 24db
Programmable transmitter swing and de-emphasis
Recovers data stream even when the differential signal eye
is completely closed due to trace attenuation and ISI jitter
Full SAS/SATA protocol support
Configurable via external pins
Leading edge power minimization in active and shutdown
modes
No external bias resistors or reference clocks required
Channel mux mode, demux mode, 1 to 2 channels multicast,
and Z-switch function mode
Available in a 36-pin QFN package (4.0 x 7.5mm with 0.5mm
pitch)
Applications
Blade servers, rack servers
SAS/SATA instrumentation
Storage systems
Cabled SAS/SATA devices
Benefits
Extends maximum cable length to over 8 meters and trace
length over 48 inches in SAS/SATA applications
Minimizes BER
Typical Application
Figure 1 IDT Repeaters in Blade Servers
IDT and the IDT logo are registered trademarks of Integrated Device Technology, Inc.
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©
2011 Integrated Device Technology, Inc
February 8, 2011
IDT 89HP0604SB Data Sheet
SAS/SATA Compliance
The device was designed to provide end users with features needed to comply with SAS/SATA system application requirements:
–
SAS/SATA Out-of-Band (OOB) Support
–
Jitter, eye opening, and all other AC and DC specifications.
Block Diagram
The P0604SB contains four high speed channels as shown in Figure 2. Each channel can be routed to different outputs. Depending on user
configuration via mode selections, input traffic can be muxed or demuxed. Powerdown (PDB) is provided for state and channel control.
Figure 2 Block Diagram
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February 8, 2011
Table of Contents
Device Overview ................................................................................................................................ 1
Applications........................................................................................................................................ 1
Features............................................................................................................................................. 1
Benefits .............................................................................................................................................. 1
Typical Application ............................................................................................................................. 1
SAS/SATA Compliance ..................................................................................................................... 2
Block Diagram.................................................................................................................................... 2
Functional Description ....................................................................................................................... 5
Power-Up................................................................................................................................... 6
Power Sequencing..................................................................................................................... 6
IDT EyeBoost™ Technology ..................................................................................................... 6
Eye Diagram Parameters .......................................................................................................... 7
Modes of Operation ................................................................................................................... 7
Electrical Specifications ................................................................................................................... 11
Absolute Maximum Ratings ..................................................................................................... 11
Recommended Operating Conditions...................................................................................... 11
Power Consumption ................................................................................................................ 12
Package Thermal Considerations............................................................................................ 12
DC Specifications .................................................................................................................... 13
AC Specifications..................................................................................................................... 13
Pin Description................................................................................................................................. 17
Package Pinout — 36-QFN Signal Pinout ....................................................................................... 19
Pin Diagram ..................................................................................................................................... 19
QFN Package Dimension ................................................................................................................ 20
Revision History ............................................................................................................................... 21
Ordering Information........................................................................................................................ 22
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February 8, 2011
IDT 89HP0604SB Data Sheet
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February 8, 2011
IDT 89HP0604SB Data Sheet
Functional Description
The P0604SB has 4 channels, each with the individually programmable features listed below. Figure 3 diagrams the channel and Table 1
summarizes key configuration options.
OOB/LOS detection with
glitch filter
Channel power-down
Programmable equalizer
+
_
Input
termination
100 ohm
Programmable Transmitter
De-emphasis: 0 to -6.5dB
Voltage swing: 500mV to
950mV
Output
termination
100 ohm
+
_
0 to 14dB
Up to 10dB
Auto-boost
Figure 3 Channel Block Diagram with Channel Features
Per-channel programmable features used at the Receive side.
–
Input equalization with 3 levels: 2 to 14dB compensation for high frequency signal attenuation due to cables and board traces. Additionally,
up to 10dB boost is added automatically by the equalizer for applications using long cables. The total equalization range is between 2dB and
24dB.
–
Input high impedance control via channel enable: disabled (active mode) and hi-Z (power-down).
Per-channel programmable features used at the Transmit side.
–
Output de-emphasis with 8 levels: 0 to -6.5dB. The de-emphasis boosts the magnitude of higher frequencies sent by the transmitter to
compensate for high frequency losses travelling through output side cable or output side board traces. This ensures that the final received
signal has a wider eye opening.
–
Output differential swing with 3 levels: 0.5V to 0.95V (peak-to-peak).
–
Loss of signal detection: When the incoming differential peak-peak amplitude falls below 110mV, the device enters loss of signal mode and
the corresponding transmitter stops toggling, maintains its common mode voltage level, and meets all loss of signal specifications described
in the AC Specifications section of this data sheet.
In addition, the device contains global configuration of the data path:
–
Transfer modes: direct connect, cross-connect, multicast.
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February 8, 2011
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