Overview
Description
The M908-01 is a PLL (Phase Locked Loop) based clock generator that uses an internal VCSO (Voltage Controlled SAW Oscillator) to produce a very low jitter output clock. It is ideal for Gigabit Ethernet. The output clock (frequency of 156.25 or 187.50MHz for example) is provided from eight LVPECL clock output pairs. (Specify frequency at time of order.) The accuracy of the output frequency is assured by the internal PLL, which phase-locks the internal VCSO to the reference input frequency (25 or 30MHz for example). The input reference can either be an external crystal, utilizing the internal crystal oscillator, or a stable external clock source such as a packaged crystal oscillator.
Features
- Output clock frequency from 125MHz to 190MHz (Consult factory for frequency availability)
- Eight identical LVPECL output pairs
- Integrated SAW (surface acoustic wave) delay line
- Low jitter 0.7ps RMS (over 12kHz-20MHz)
- Ideal for Gigabit Ethernet clock reference
- Output-to-output skew < 100ps
- External XTAL or LVCMOS reference input
- Industrial temperature grade available
- Single 3.3V power supply
- Small 9 x 9 mm SMT (surface mount) package
Comparison
Applications
Design & Development
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
Support
Support Communities
Support Communities
-
TraceX - Issue with external interrupt
... New Thread 1.1025][New Thread 1.1026][New Thread 1.1027] Program received signal SIGINT, Interrupt.0x00017414 in __get_ipsr_value () at C:\git\m908\m908_rcu\m908_rcu\synergy\ssp\inc\framework\el/./cm4_gcc/tx_port.h:329329 __asm__ volatile (" MRS %0,IPSR ": "=r ...
Jan 25, 2018 -
FileX on USB Mass Storage Issues
... determine where the function call was breaking. In doing so I created another problem that results in a build failure: makefile:99: recipe for target 'm908_rcu.elf' failedmake (e=87): The parameter is incorrect. make: *** [m908_rcu.elf] Error 87 Removing the FileX source again resolves this issue, but ...
Sep 12, 2018 -
How do you locate all GUIX Studio resources in external QSPI memory?
Hi - What is the best way to build a project so all of the GUIX studio resources are placed in QSPI memory? - Using BSP_PLACE_IN_SECTION(".qspi_flash_data") I can get individual items to link to the QSPI, but this is not an option for the large number ...
Jun 23, 2018