Overview
Description
The 8A34045 multi-channel Digital PLL/Digitally Controlled Oscillator (DPLL/DCO) provides tools to manage timing references, clock conversion, and timing paths for common communications protocols such as Synchronous Ethernet (SyncE), Optical Transport Network (OTN), and Common Public Radio Interface (CPRI). The device can be used to synchronize communication ports on line cards or daughter cards that are connected with synchronization sources across backplanes or other media. DCOs are available to be controlled by OTN clock recovery servo software running on an external processor. DPLLs support the filtering of gapped clocks for OTN; and hitless reference switching between references from redundant timing sources. The device supports multiple independent timing channels for clock generation, jitter attenuation, and universal frequency translation. Input-to-input, input-to-output and output-to-output phase skew can all be precisely managed. The device outputs ultra-low jitter clocks that can directly synchronize SerDes running at up to 28Gbps; as well as CPRI/OBSAI, SONET/SDH and PDH interfaces.
To see other devices in this product family, visit the ClockMatrix Timing Solutions page.
Features
- Four independent Digital PLLs (DPLLs)
- Four independent Digitally Controlled Oscillators (DCOs)
- Jitter output below 150fs RMS (typical)
- DPLLs lock to any frequency from 1kHz to 1GHz
- DPLLs/DCOs generate any frequency from 0.5Hz to 1GHz
- DCO outputs can be aligned in phase and frequency with the outputs of any DPLL or DCO
- Supports up to 4 differential or 8 single-ended reference clock inputs
- Supports up to 12 differential outputs or 24 LVCMOS outputs
- Reference monitors qualify/disqualify references depending on LOS, activity, frequency monitoring and/or LOS input pins
- Automatic reference selection state machines select the active reference for each DPLL based on the reference monitors, priority tables, revertive/non-revertive and other programmable settings
- Device requires a crystal oscillator or fundamental-mode crystal: 25MHz to 54MHz
- Optional XO_DPLL input allows a wider range for XO, TCXO, or OCXO frequencies from 1MHz to 150MHz for applications that require a local oscillator with high stability
- Serial processor ports support 1MHz I²C or 50MHz SPI
- The device can configure itself automatically after reset via:
- Internal Customer-programmable One-Time Programmable memory
- Standard external I²C EPROM via separate I²C Master Port
Comparison
Applications
Design & Development
Software & Tools
Software & Tools
| Software title
|
Software type
|
Company
|
|---|---|---|
| Timing Commander Timing Commander™ is an innovative Windows™-based software platform enabling system design engineers to configure, program, and monitor sophisticated timing devices with an intuitive and flexible graphical user interface (GUI).
|
Code Generator | Renesas |
1 item
|
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Temp. Range |
Carrier Type |
Moisture Sensitivity Level (MSL) |
Price (USD) | 1ku |
Buy / Sample |
|
|---|---|---|---|---|---|
| Part Number | |||||
| -40 to 85°C | Reel | 3 | |||
| -40 to 85°C | Reel | 3 | |||
| -40 to 85°C | Tray | 3 | 21.56 | Get Samples, |
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Videos & Training
The ClockMatrix family of devices offers high-performance, precision timing solutions for applications with up to 100 Gbps interface speeds. They are versatile in their usage, supporting functions such as clock generation, frequency translation, jitter attenuation, and phase alignment across a range of densities. The 8A3404x Multichannel Digital PLL/DCO family manages timing references and clock conversion for protocols like SyncE, OTN, and CPRI. It features multiple independent timing channels for clock generation, jitter attenuation, and universal frequency translation, outputting ultra-low-jitter clocks for high-speed interfaces like SERDES, CPRI/OBSAI, SONET/SDH, and PDH.
Related Resources
