Defines the source of the secondary 8 KHz clock on the bus.

DWORD swiConfigSec8KClock ( SWIHD swihd,
DWORD source,
DWORD network)

swihd Handle returned by swiOpenSwitch.

source Clock source for the secondary 8 KHz signal on a board. Refer to the Details section for acceptable values.

network Device source of the secondary 8 KHz signal when source is MVIP95_SOURCE_NETWORK. See the Details section for acceptable values.

• SUCCESS
• CTAERR_DRIVER_ERROR
  The underlying driver retrieved an unrecognized error. Call swiGetLastError to retrieve the MVIP device error code.
• CTAERR_INVALID_HANDLE
  swihd is not a valid switch handle.
• SWIERR_INVALID_CLOCK_PARM
  The value of a clock configuration parameter is invalid.
• SWIERR_INVALID_PARAMETER
  A board-specific clock parameter value is invalid.

• None.

This function establishes the source of the secondary 8 KHz clock on the bus.

Note: If you open a switch and call swiConfigSec8KClock without calling swiConfigBoardClock at least once, the clock source is changed to OSC. To prevent this, call swiConfigBoardClock before calling swiConfigSec8KClock for the first time on a particular switch handle.

Acceptable values for source are:

MVIP95_SOURCE_DISABLE
MVIP95_SOURCE_INTERNAL
MVIP95_SOURCE_NETWORK

Acceptable values for network are 1 to n where n is the number of devices on the board. Not all devices are capable of being a source for SEC8K. Refer to the device-specific hardware documentation for the devices that are capable of being a source for SEC8K.

Refer to Chapter 4 for more information about configuring clocks.

If CTAERR_DRIVER_ERROR is returned, call swiGetLastError to retrieve the MVIP device error code.

swiConfigBoardClock, swiConfigNetrefClock, swiGetBoardClock, swiGetLastError, swiGetTimingReference, swiOpenSwitch

void myT1ClockInit(SWIHD swihd)
{
    SWI_CLOCK_ARGS boardclock;

    /* Make board sync off MVIP bus clock */
    boardclock.size = sizeof(SWI_CLOCK_ARGS);
    boardclock.clocktype = MVIP95_STD_CLOCKING;
    boardclock.clocksource = MVIP95_SOURCE_MVIP;
    swiConfigBoardClock(swihd, &boardclock);

    /* Make board's network 1 provide the source of the Sec8K signal */
    swiConfigSec8KClock(swihd, MVIP95_SOURCE_NETWORK, 1);
}