pdi1394l21 NXP Semiconductors, pdi1394l21 Datasheet - Page 21

• Manufacturer Part Number: pdi1394l21
• Description: 1394 Full Duplex Av Link Layer Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
12.5.2.3 Block receive
The block receive format is shown below. The first quadlet contains the destination node ID and the rest of the packet header. The second and
third quadlets contain 16-bit sourceID and either the 48-bit destination offset (for requests) or the response code and reserved data (for
responses). The fourth quadlet contains the length of the data field and the extended transaction code (all zeros except for lock transactions).
The block data, if any, follows the extended code. The last quadlet contains packet reception status.
2000 Aug 24
1394 full duplex AV link layer controller
31 30
31 30
29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Figure 19. Block Write or Lock Request Receive Format
Figure 18. Block Read Request Receive Format
destinationID
data length
destinationID
dataLength
sourceID
sourceID
destinationOffsetLow
destinationOffsetLow
Block data
spd
spd
21
tLabel
tLabel
destinationOffsetHigh
padding (if needed)
destinationOffsetHigh
extendedTcode
rt
rt
tCode
tCode
ackSent
SV00261
ackSent
SV00262
priority
priority
PDI1394L21
Preliminary specification