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PCIe Re-Drivers
PCIe Re-Drivers
GN1407
PCI-SIG Compliant
Quad Re-Driver
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Semtech GN1406
PCI-SIG Compliant Quad Retiming Re-Driver
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The GN1406 is a PCI-SIG compliant quad retiming re-driver designed for 2.5Gbps and 5.0Gbps or 3.125Gbps
and 6.25Gbps communications.
The GN1406 extends the reach and robustness of high-speed serial links by compensating for losses in the
transmission medium and resetting the jitter budget.
Each high-speed input interface includes an integrated high input jitter tolerant retimer circuit with
adjustable equalization.
The GN1406 high-speed serial output interface features very low jitter and allows for amplitude adjustment
through the use of a serial control interface. De-emphasis levels can also be set to compensate for
transmission losses.
Each channel in the GN1406 can be independently configured or powered down.
A turn-key Reference Design Kit is available including schematics and PCB design database.
Features
PCIe 2.0, 5GT/s compliant
Low Power Dissipation
Multi-rate operation: 2.5Gbps, 3.125Gbps, 5Gbps, or 6.25Gbps
Supports 1.25Gb/s operation
High Input Jitter Tolerance
Retimer resets the jitter budget
Programmable Input Equalization
Low latency
Retimer Bypass Option
Loss of Lock Indicator
Loss of Signal Indicator
Horizontal Phase Adjustment Capability
Independent Channel Operation
Individual Channel Power Down
Selectable Output Level
Programmable Output De-emphasis
Individual programmable channels
I2C Control Interface
Transparent operation for data rate auto negotiation in PCIe® 2.0
Supports spread spectrum clocking for PCI Express® applications
Supports Receiver Detect for PCI Express applications
Supports Electrical Idle preservation for PCI Express applications with ultra-fast Electrical Idle Entry and
Exit
Applications
PCI Express x1 Over a Single CATx Cable
The high equalization gain and retiming capability of the GN1406 enables low-cost CATx cable to be used
robustly for PCI Express at extended cable length. From a signal integrity perspective, CATx cable is
challenging due to high losses and crosstalk caused by lack of shielding. The high gain equalization function
of the GN1406 overcomes the cable insertion loss. The retimer mitigates this further while rejecting
crosstalk induced jitter. Due to the need to communicate 3 or 4 sideband signals in addition to high-speed
data and clock, another challenge for this application is the limited number of signal pairs available on a
single CATx cable. By using a small Microcontroller at each end, it is possible to multiplex the low-speed
sideband signals so that only a single twisted pair is required.
PCI Express 1.1 and 2.0
Infiniband SDR/DDR operation
High-speed serial line card and backplane communications
Blade servers
Cable extender
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Order Codes
Part No Package
GN1406-INE3 Tray (260pcs)
