Maxim-integrated 73M1866B/73M1966B Reference Driver Manual do Utilizador Página 87

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UG_1x66B_015 73M1866B/73M1966B Reference Driver User Guide
Rev. 2.7 87
7.13 Loopback Related Data Type and Structure
7.13.1 M1966_LOOPBACK_COMMAND
Description
These loopback commands can be used in the M1966_LOOPBACK IOCTL to manage loopback sessions.
Prototype
typedef enum
{
M1966_LOOPBACK_CMD_GET = 0, /* Get the current loopback session */
M1966_LOOPBACK_CMD_SET = 1, /* Set (initiate) a loopback session */
M1966_LOOPBACK_CMD_CLEAR = 2 /* Clear (terminate) a loopback session */
}
M1966_LOOPBACK_COMMAND;
Parameters
Name Value Description
M1966_LOOPBACK_CMD_GET
0
Get the type of current loopback session.
M1966_LOOPBACK_CMD_SET
1
Initiate a loopback session.
M1966_LOOPBACK_CMD_CLEAR
2
Terminate a loopback session.
7.13.2 M1966_LOOPBACK_MODE
Description
The driver supports six loopback modes. Refer to Figure 3 for those loopback reference points.
Prototype
typedef enum
{
M1966_LOOPBACK_MODE_NONE = 0, /* No loopback */
M1966_LOOPBACK_MODE_PCMLB = 1, /* PCM Loopback */
M1966_LOOPBACK_MODE_DIGLB1 = 2, /* Digital Loopback-1 */
M1966_LOOPBACK_MODE_INTLB1 = 3, /* Internal Loopback-1 */
M1966_LOOPBACK_MODE_DIGLB2 = 4, /* Digital Loopback-2 */
M1966_LOOPBACK_MODE_INTLB2 = 5, /* Internal Loopback-2 */
M1966_LOOPBACK_MODE_ALB = 6 /* Analog Loopback */
}
M1966_LOOPBACK_MODE;
Parameters
Name Value Description
M1966_LOOPBACK_MODE_NONE
0
No Loopback.
M1966_LOOPBACK_MODE_PCMLB
1
PCM Loopback.
M1966_LOOPBACK MODE DIGLB1
2
Digital Loopback-1.
M1966_LOOPBACK MODE INTLB1
3
Internal Loopback-1.
M1966_LOOPBACK MODE DIGLB2
4
Digital Loopback-2.
M1966_LOOPBACK MODE INTLB2
5
Internal Loopback-2.
M1966_LOOPBACK MODE ALB
6
Analog Loopback.
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