// 61883.h

typedef struct _UNIT_ISOCH_PARAMS {
  IN OUT ULONG RX_NumPackets;
  IN OUT ULONG RX_NumDescriptors;
  IN OUT ULONG TX_NumPackets;
  IN OUT ULONG TX_NumDescriptors;
} UNIT_ISOCH_PARAMS, *PUNIT_ISOCH_PARAMS;
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Windows Driver Kit DDI reference (ns-61883-_unit_isoch_params)

_UNIT_ISOCH_PARAMS structure

Description

The UNIT_ISOCH_PARAMS structure is used to get or set the parameters that the IEC-61883 protocol driver uses when capturing or transmitting isochronous packets.

Members

`RX_NumPackets`

The number of isochronous packets per descriptor to be received.

`RX_NumDescriptors`

The number of descriptors used for receiving isochronous data.

`TX_NumPackets`

The number of isochronous packets per descriptor to be transmitted.

`TX_NumDescriptors`

The number of descriptors used for transmitting isochronous data.

Remarks

The UNIT_ISOCH_PARAMS structure can be used with Av61883_SetUnitInfo to set the number of isochronous packets and descriptors used while transmitting or receiving data. Before setting isochronous parameters, a driver should send an Av61883_GetUnitInfo request to retrieve the current isochronous parameters and then make any necessary modifications with Av61883_SetUnitInfo.

UNIT_ISOCH_PARAMS - NtDoc