User guide

August 2001 151
Configuring the MVIP-90 Clock
Setting the Clock Parameters
Set the MVIP clock during driver installation and configuration
using the Configuration Wizard. For specific information about
how to set the MVIP clock during driver configuration, see the
RealCT API Installation and Configuration Guide.
If you need to change the clock parameters after software
installation, run the Configuration Wizard or use the functions
CONFIG_CLOCK for RTNI boards, or RHT_SET_CLOCK for
Vantage VPS boards, as described in the RealCT Direct API
Reference Manual.
When you use CONFIG_CLOCK, first configure the board
setting the MVIP clock. Then configure any other RTNI,
Vantage PCI, or Vantage VPS boards in the system.
For each board, specify one of the following as the clock source:
CLOCK_REF_NET1 Drives the clock from the first
network trunk.
CLOCK_REF_NET2 Drives the clock from the second
network trunk.
CLOCK_REF_OSC Drives the clock from the internal
oscillator.
CLOCK_REF_MVIP Takes the clock from the /F0 signal.
CLOCK_REF_SEC8K Takes the clock from the SEC8K
signal. We don’t recommend taking
the primary clock from the SEC8K
signal.
For each board, you also set whether it drives the SEC8K as a
backup signal as follows:
SEC8K_NOT_DRIVEN Board does not drive the SEC8K
clock.
SEC8K_DRIVEN_BY_OSC Board drives the SEC8K clock from
the internal oscillator.
SEC8K_DRIVEN_BY_NET1 Board drives the SEC8K clock from
the first network trunk.
SEC8K_DRIVEN_BY_NET2 Board drives the SEC8K signal from
the second network trunk.