"PCI Device Header Write" (SVC/MEM)

ITOS Mnemonic:  LMEMLOADPCI

View Options: (help)

Focus:	Maintenance / Operation
Structures:	Abstract / Concrete

Context:

Description:

Load data to a PCI device header.

Layout:  (hide detail; help)

PCI Device Header Write (LMEMLOADPCI) Telecommand Packet Format
0x	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
000	Version=0			T=1	SH	APID=0x644:5
002	SF=3		Sequence Count
004	Packet Length=9
006	0	Function Code=5
008	CIDBF idents
00A	CPCIADDRBF addr
00C	CDATA16 data
00E	Packet Checksum

LMEMLOADPCI (pkt)
|  CIDBF idents (bf)
|  |  CLATUNIT latUnit (0-3)
|  |  CTRANID tranID (4-15)
|  CPCIADDRBF addr (bf)
|  |  CPCIBUS bus (0)
|  |  CPCIDEVICE device (1-5)
|  |  CPCIFUNCTION function (6-7)
|  |  CPCIOFFSET offset (8-15)
|  CDATA16 data (fld)

typedef struct _MEM_LMEMLOADPCI_Pkt {

    /* CCSDS header */
    char                 hdr[8];

    /* Command payload */
    MEM_LMEMLOADPCI_Prm  pay;

} MEM_LMEMLOADPCI_Pkt;

Fields:

CDATA16 (index)

Attribute(s):  

Brief:  "16-Bit Data Value"

Instance(s):  data

16-bit data value.

CIDBF (index)

Attribute(s):  

Brief:  "LAT Unit and Transaction ID Bitfield"

Instance(s):  idents

Bitfield to contain the LAT unit that is the target of a MEM telecommand and the transaction ID for the MEM telecommand.

CPCIADDRBF (index)

Attribute(s):  

Brief:  "PCI Device Header Address Bitfield"

Instance(s):  addr

Bitfield containing PCI device header address.