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參數(shù)資料
| 型號(hào)： | TSB12LV01APZ |
| 廠(chǎng)商： | Texas Instruments, Inc. |
| 英文描述： | High-Speed Serial-Bus Link-Layer Controller |
| 中文描述： | 高速串行總線(xiàn)鏈路層控制器 |
| 文件頁(yè)數(shù)： | 40/71頁(yè) |
| 文件大小： | 267K |
| 代理商： | TSB12LV01APZ |
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4–2
4.1.2
The block–transmit format is shown in Figure 4–2. The first quadlet contains packet–control information. The
second and third quadlets contain the 64–bit address.
Block Transmit
The first 16 bits of the fourth quadlet contain the dataLength field. This is the number of bytes of data in the
block data section of the packet. The remaining 16 bits represent the extended_tCode field. (See Table 6–11
of the IEEE 1394–1995 standard for more information on extended_tCodes.) The block data, if any, follows
the extended_tCode. Block write responses are identical to the quadlet write response and use the format
described in subsection 4.1.3.
0
1
2
3
4
5 6
7
8
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
spd
tLabel
rt
tCode
priority
destinationID
destinationOffsetHigh
destinationOffsetLow
dataLength
extended_tCode
block data
Figure 4–2. Block-Transmit Format
Table 4–2. Block-Transmit Format Functions
FIELD NAME
DESCRIPTION
spd
This field indicates the speed at which this packet is to be sent. 00 = 100 Mbits/s, 01 = 200
Mbits/s, and 10 = 400 Mbits/s, and 11 is undefined for this implementation.
tLabel
This field is the transaction label, which is a unique tag for each outstanding transaction
between two nodes. This is used to pair up a response packet with its corresponding request
packet.
rt
The retry code for this packet is 00 = new, 01 = retry_X, 10 = retryA, and 11 = retryB.
tCode
tCode is the transaction code for this packet (see Table 6–10 of IEEE 1394-1995 standard).
priority
The priority level for this packet. For cable implementation, the value of the bits must be 0.
For backplane implementation, see clause 5.4.1.3 and 5.4.2.1 of the IEEE 1394-1995
standard.
destinationID
This is the concatenation of the 10-bit bus number and the 6-bit node number that forms the
node address to which this packet is being sent.
destination OffsetHigh,
destination OffsetLow
The concatenation of these two fields addresses a quadlet in the destination node’s address
space. This address must be quadlet aligned (modulo 4). The upper four bits of the
destination OffsetHigh field are used as the response code for lock-response packets and
the remaining bits are reserved.
dataLength
The number of bytes of data to be transmitted in the packet.
extended_tCode
This field is the block extended_tCode to be performed on the data in this packet. See Table
6–11 of the IEEE 1394-1995 standard.
block data
The data to be sent. If dataLength is 0, no data should be written into the FIFO for this field.
Regardless of the destination or source alignment of the data, the first byte of the block must
appear in byte 0 of the first quadlet.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TSB12LV01B | 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:IEEE 1394-1995 HIGH SPEED SERIAL BUS LINK LAYER CONTROLLER |
| TSB12LV01B-EP | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:Military Enhanced Plastic High Performance 1394 3.3V Link Layer for Telecom. Embedded & Indust. App. |
| TSB12LV01BIPZT | 功能描述:1394 接口集成電路 High Perf 1394 3.3V Link Layer RoHS:否 制造商:Texas Instruments 類(lèi)型:Link Layer Controller 工作電源電壓: 封裝 / 箱體:LQFP 封裝:Tray |
| TSB12LV01BIPZTEP | 功能描述:1394 接口集成電路 Mil Enh Hi Perf 1394 3.3V Link Layer RoHS:否 制造商:Texas Instruments 類(lèi)型:Link Layer Controller 工作電源電壓: 封裝 / 箱體:LQFP 封裝:Tray |
| TSB12LV01BPZ | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:BUS CONTROLLER |
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