Maxim-integrated 73M1822/73M1922 Control Module Manual do Utilizador descarregar pdf (Página 28)

73M1822/73M1922 Control Module User Guide UG_1x22_053

28 Rev. 1.0

6.1.7 M1X22_GET_SAMPLING_FREQ

Description

Return current modem sample rate. The 73M1x22 device can operate at many different sample rates

ranging from 7.2 kHz to 16 kHz. The device defaults to 7.2 kHz operation with a 24.576 MHz crystal upon

startup.

#define M1X22_GET_SAMPLING_FREQ _IOWR(0xA4, 0xA8, unsigned int)

Prototype

int ioctl (

int chan_fd,

int M1X22_GET_SAMPLING_FREQ)

unsigned long param );

Parameters

Data Type Name Description

int

chan_fd

Channel descriptor.

int

M1X22_GET_SAMPLING_FREQ

I/O control identifier for this operation.

unsigned long

param

N/A.

Return Values

Data Type Description

int

Sample rate selection as defined in

M1X22_SAMPLE_RATE_SELECTION

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 85 86

73M1822/73M1922 1
Control Module User Guide 1
Table of Contents 3
1 Introduction 7
2 Overview 8
2.2 Functional Overview 9
2.2.1 Event Generation 10
2.2.4 GPIO Support 11
2.2.6 Call Progress Monitor 12
2.2.7 Billing Tone Filter 12
3 Driver Service Interface 13
and ioctl() 13
4 Country Specific Settings 14
5 Modem Events 15
5.2 Event Identification 16
5.2.4 M1X22_NOPOH_DETECT 17
5.2.5 M1X22_POLARITY_CHG 17
5.2.6 M1X22_RING_DETECT 17
5.2.7 M1X22_RING_DETECT_END 18
5.2.9 M1X22_OV_DETECT 18
5.2.10 M1X22_OI_DETECT 19
5.2.11 M1X22_LINE_STATE 19
5.2.12 M1X22_DIAL_COMPLETE 19
5.2.13 M1X22_DIAL_ABORTED 20
5.2.15 M1X22_GPIO_INTERRUPT 20
6.1.1 M1X22_CH_INIT 22
6.1.2 M1X22_CNTRY_NMBR_GET 23
6.2.1 M1X22_RNG_GET 29
6.2.2 M1X22_POL_GET 30
6.2.3 M1X22_BAT_GET 31
6.2.4 M1X22_POH_GET 32
6.2.5 M1X22_EVENT_GET 33
6.2.6 M1X22_ERROR_CODE_GET 34
6.3.2 M1X22_ATH1 36
6.3.3 M1X22_ATH0 37
6.3.4 M1X22_ATDP 38
6.3.5 M1X22_ATDP_CANCEL 39
6.3.6 M1X22_ATDP_PARAM 40
6.3.7 M1X22_FLSH_CFG 41
6.3.8 M1X22_FLSH_SET 41
6.4 Caller-ID Services 43
6.4.3 M1X22_ENTER_CID_MODE 44
6.4.4 M1X22_EXIT_CID_MODE 45
6.5 Ring Detection Services 46
6.6.1 M1X22_MEASURE_START 48
6.6.2 M1X22_MEASURE_STOP 49
6.6.3 M1X22_MEASURE_UPDATE 50
M1X22_MEASURE_UPDATE_t read; 51
6.7 GPIO Services 52
6.7.2 M1X22_GPIO_CONTROL 53
6.7.3 M1X22_GPIO_DATA 54
6.8 Loopback Services 55
6.9 Miscellaneous 56
6.9.2 M1X22_BTONE_FILTER 57
6.9.3 M1X22_CPROG_MONITOR 58
6.9.4 M1X22_DEBUG_LEVEL_SET 59
7.1 M1X22_COUNTRY_CODE 60
7.2 M1X22_CNTRY_STRUCT_t 62
7.3 M1X22_DEBUG_TRACE_MASK 63
7.4 M1X22_LAST_ERROR_CODE 63
7.5 struct txrx_gain 64
7.6 M1X22_PULSE_DIAL_t 64
7.8 M1X22_THRESH_OVERRIDE_t 65
7.10.3 M1X22_BTONE_FILTER_t 69
7.11.2 M1X22_CPROG_MON_GAIN 70
7.12.1 M1X22_GPIO_NUMBER 72
7.12.5 M1X22_GPIO_DATA_TYPE 74
7.12.8 M1X22_GPIO_CONFIG_t 75
7.12.9 M1X22_GPIO_DATA_t 76
7.13.2 M1X22_LOOPBACK_MODE 77
7.13.3 M1X22_LOOPBACK_t 78
7.14.1 M1X22_MEASURE_ENTITY 79
7.14.2 M1X22_MEASURE_ACTION 79
7.14.5 M1X22_IET_t 82
9 Related Documentation 84
10 Contact Information 84
Appendix A – Country Codes 85
Revision History 86

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