Maxim Integrated 73M1866B/73M1966B Reference Driver - Manual (Page 59)

UG_1x66B_015 73M1866B/73M1966B Reference Driver User Guide
Rev. 2.7 59
6.5.3 M1966_SET_RING_MAX_FREQ
Description
Upon detection of a ring burst the driver will attempt to determine the ring burst frequency. If the ring
burst frequency is above the minimum ring frequency and below the maximum frequency, then the driver
will report an M1966_RING_DETECT event.
#define M1966_SET_RING_MAX_FREQ _IOWR(0xA4, 0xE4, unsigned int)
Prototype
int ioctl (
int chan_fd,
int M1966_SET_RING_MIN_FREQ,
unsigned long param );
Parameters
Data Type Name Description
int chan_fd Channel descriptor.
int M1966_SET_ RING_MAX_FREQ I/O control identifier for this operation.
unsigned long param Frequency in Hz.
Return Values
Data Type Description
int Always returns 0.