PHY_CONFIGURATION_PACKET structure (1394.h)

The PHY_CONFIGURATION_PACKET structure contains a raw PHY configuration packet.

Syntax

typedef struct _PHY_CONFIGURATION_PACKET {
  ULONG PCP_Phys_ID : 6;
  ULONG PCP_Packet_ID : 2;
  ULONG PCP_Gap_Count : 6;
  ULONG PCP_Set_Gap_Count : 1;
  ULONG PCP_Force_Root : 1;
  ULONG PCP_Reserved1 : 8;
  ULONG PCP_Reserved2 : 8;
  ULONG PCP_Inverse;
} PHY_CONFIGURATION_PACKET, *PPHY_CONFIGURATION_PACKET;

Members

PCP_Phys_ID

Specifies the node address of the root. This member contains bits 0-5 of byte 0 of the packet.

PCP_Packet_ID

This member must be PHY_PACKET_ID_CONFIGURATION to indicate it is a PHY configuration packet. This member contains bits 6-7 of byte 0 of the packet.

PCP_Gap_Count

If the PCP_Set_Gap_Count bit is set, the PHY register gap_count field is set to this value. This member contains bits 0-5 of byte 1 of the packet.

PCP_Set_Gap_Count

If this bit is set, the PHY register gap_count field is set to PCP_Gap_Count. This member contains bit 6 of byte 1 of the packet.

PCP_Force_Root

If set, the caller becomes the root node. This member contains bit 7 of byte 1 of the packet.

PCP_Reserved1

Reserved. This member contains bits 0-7 of byte 2 of the packet.

PCP_Reserved2

Reserved. This member contains bits 0-7 of byte 3 of the packet.

PCP_Inverse

Specifies the logical inverse of the first quadlet of the packet.

Remarks

For an explanation of the function of the PHY configuration packet, see the IEEE 1394 specification.

Requirements

See also

REQUEST_SEND_PHY_CONFIG_PACKET