PDI1394L40 查看數據表（PDF） - Philips Electronics

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PDI1394L40

1394 enhanced AV link layer controller

Philips Electronics 

Philips Semiconductors

1394 enhanced AV link layer controller

Preliminary specification

PDI1394L40

12.6.2.10 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.

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

destinationID

tLabel

rt

tCode

priority

sourceID

destinationOffsetHigh

destinationOffsetLow

dataLength

extendedTcode

Block data

padding (if needed)

spd

ackSent

SV00262

Figure 28. Block Write or Lock Request Receive Format

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

destinationID

tLabel

rt

tCode

priority

sourceID

rCode

2000 Dec 15

dataLength

extendedTcode

Block data

padding (if needed)

spd

u ackSent

SV00263

Figure 29. Block Read or Lock Response Receive Format

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