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| 型號(hào)： | 935263912557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 1 CHANNEL(S), 400M bps, SERIAL COMM CONTROLLER, PQFP100 |
| 封裝： | 14 X 14 MM, 1 MM HEIGHT, PLASTIC, SOT-386-1, TQFP-100 |
| 文件頁數(shù)： | 5/56頁 |
| 文件大?。?/td> | 277K |
| 代理商： | 935263912557 |
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Philips Semiconductors
Preliminary specification
PDI1394L21
1394 full duplex AV link layer controller
2000 Jun 06
13
12.5
Link Packet Data Formats
The data formats for transmission and reception of data are shown below. The transmit format describes the expected organization for data
presented to the link at the asynchronous transmit, physical response, or isochronous transmit FIFO interfaces.
12.5.1
Asynchronous Transmit Packet Formats
These sections describe the formats in which packets need to be delivered to the queues (FIFOs) for transmission. There are four basic formats
as follows:
ITEM
FORMAT
USAGE
TRANSACTION CODE
(tCode)
1
No packet data
Quadlet read requests
4
1
No-packet data
Quadlet/block write responses
2
Quadlet write requests
0
2
Quadlet packet
Quadlet read responses
6
Block read requests
5
Block write requests
1
3
Block Packet
Block read responses
7
3
Block Packet
Lock requests
9
Lock responses
Bhex
4
Unformatted transmit
Concatenated self-ID / PHY packets
Ehex
Each packet format uses several fields (see names and descriptions below). More information about these fields (not the format) can be found
in the 1394 specification. Grey fields are reserved and should be set to zero values.
12.5.1.1
No-data Transmit
The no-data transmit formats are shown in Figures 6 and 7. The first quadlet contains packet control information. The second and third quadlets
contain 16-bit destination ID and either the 48-bit, quadlet aligned destination offset (for requests) or the response code (for responses).
destinationID
spd
tLabel
rt
tCode
0000
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
destinationOffsetHigh
SV00250
destinationOffsetLow
0
31 30
Figure 6. Quadlet Read Request Transmit Format
destinationID
spd
tLabel
rt
tCode
0000
SV00249
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
rCode
31 30
0
Figure 7. Quadlet/Block Write Response Packet Transmit Format
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 935263912551 | 1 CHANNEL(S), 400M bps, SERIAL COMM CONTROLLER, PQFP100 |
| 08-1101-00 | DREHSCHALTER 1POL 12STELLUNGEN |
| 08-1260-00 | ************GESTRICHEN************ |
| 08-1341-00 | DREHSCHALTER 3POL 4STELLUNGEN |
| 08-2101-00 | DREHSCHALTER 2POL 12STELLUNGEN |
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