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參數(shù)資料
| 型號： | TSB12C01AWN |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | High-Speed Serial-Bus Link-Layer Controller |
| 中文描述： | 高速串行總線鏈路層控制器 |
| 文件頁數(shù)： | 36/59頁 |
| 文件大小： | 275K |
| 代理商： | TSB12C01AWN |
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4–6
Table 4–6. Isochronous-Receive Functions
FIELD NAME
DESCRIPTION
dataLength
This field indicates the number of bytes in this packet
TAG
This field indicates the format of data carried by isochronous packet (00 = formatted, 01 – 11 are
reserved).
chanNum
This field contains the channel number with which this data is associated
tCode
This field carries the transaction code for this packet (tCode = Ah).
sy
This field carries the transaction layer-specific synchronization bits.
isochronous data
This field has the data to be sent with this packet. The first byte of data must appear in byte 0 of
the first quadlet of this field. The last quadlet should be padded with zeros.
spd
This field indicates the speed at which this packet was sent.
errCode
This field indicates whether this packet was received correctly. The possibilities are Complete,
DataErr, or CRCErr and have the same encoding as the corresponding acknowledge codes.
4.4
The format of the snoop data is shown in Figure 4–7. The receiver module can be directed to receive any
and all packets that pass by on the serial bus. In this mode, the receiver presents the data received to the
receive-FIFO interface.
Snoop
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
snooped_data
spd
ackSnpd
snpStat
Figure 4–7. Snoop Format
Table 4–7. Snoop Functions
FIELD NAME
DESCRIPTION
snooped_data
This field contains the entire packet received or as much as could be received.
spd
This field carries the speed at which this packet was sent.
snpStat
This field indicates whether the entire packet snooped was received correctly. A value equal to the
complete acknowledge code indicates complete reception. A busyA or busyB acknowledge code
indicates incomplete reception.
ackSnpd
This field indicates the acknowledge seen on the bus after the packet is received.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| TSB12LV01A | 制造商:Texas Instruments 功能描述: |
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| TSB12LV01B | 制造商:TI 制造商全稱:Texas Instruments 功能描述:IEEE 1394-1995 HIGH SPEED SERIAL BUS LINK LAYER CONTROLLER |
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