SPC7281 Epson Electronics America, Inc., SPC7281 Datasheet - Page 18

• Manufacturer Part Number: SPC7281
• Description: IEEE1394 Controller
• Manufacturer: Epson Electronics America, Inc.

S1R72801F00A
7.2.2 Receive Packet Format
(1) RxAsyncronousePacket <4> QuadReadReq, WriteResp
(2) RxAsyncronousePacket <5> QuadWriteReq, QuadReadResp, BlockReadReq
14
1 QuadReadReq
2 WriteResp
1 QuadWriteReq
2 QuadReadResp
3 BlockReadReq
0
1
2
3
4
5
6
7
2
3
4
2
3
4
2
3
4
0
1
2
3
4
5
6
7
2
3
2
3
b.31
b.31
–
DestinationID
DestinationID
DataLength
–
SourceID
SourceID
SourceID
SourceID
SourceID
SourceID
SourceID
24 23
24 23
(tcode : 0x0)
(tcode : 0x6)
(tcode : 0x5)
(tcode : 0x4)
(tcode : 0x2)
PacketTypeSpecQuadData
PacketTypeSpecInfo
PacketTypeSpecInfo
DestinationOffset
DestinationOffset
DestinationOffset
speed
speed
QuadletData
QuadletData
EPSON
reserved
reserved
reserved
reserved
16 15
16 15
(MSB)
(MSB)
(MSB)
(MSB)
(MSB)
rcode
rcode
–
–
tl
tl
AS
AS
ExtendedTcode
BT 0
BT 0
rt
rt
8
8
7
7
tcode
tcode
BC 0
BC 0
ACK
ACK
pri
pri
(LSB)
(LSB)
(LSB)
(LSB)
(LSB)
b.0
b.0