參數(shù)資料
型號(hào): TSB42AA4PDT
廠商: Texas Instruments, Inc.
英文描述: IEEE 1394 A CONSUMER ELECTRONICS LINK LAYER CONTROLLER
中文描述: 1394消費(fèi)電子產(chǎn)品鏈路層控制器
文件頁(yè)數(shù): 40/183頁(yè)
文件大?。?/td> 798K
代理商: TSB42AA4PDT
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315
signal during a valid data byte indicates that the current byte is the last byte of a packet. Internally the packet
is marked and sent to the internal buffer.
3.2.3.4
HSDI Functional Timing Diagrams Read
HSDIx_CLK
HSDIx_SYNC
HSDIx_RW
HSDIx_AV
HSDIx_EN
HSDIx_A[2:0]
HSDIx_D[7:0]
X
XX
00
A9
1E
03
FF
47
3F
76
56
XX
Figure 315. HSDI Read, Byte-Wide Data Bus, Sync Mode A
In sync mode A read in Figure 315 HSDIx_EN is showed going high before data is available. In this case,
data is not read out until the HSDIx_AV signal is active as well. However, if HSDIx_EN is not active, all control
signals on the HSDI are ignored.
HSDIx_CLK
HSDIx_SYNC
HSDIx_RW
HSDIx_AV
HSDIx_EN
HSDIx_A[2:0]
HSDIx_D[7:0]
X
76
A9
1E
03
FF
47
3F
XX
76
XX
Figure 316. HSDI Read, Byte-Wide Data Bus, Sync Mode B
In sync mode B read in Figure 316, the packets are a fixed length of four bytes. The first packet consists
of 76 A9 1E 03. The second packet consists of FF 47 3F 76. The HSDIx_AV signal goes high to indicate
data is available in the FIFO. At the same time, the first byte of data is presented on HSDIx_D[7:0]. The data
does not change until the HSDIx_EN signal is activated. On the next clock after the HSDIx_EN signal goes
high, the HSDI outputs the next byte of data. The HSDIx_SYNC signal is high during the first byte of the
packet. For the first packet, it is high during the 76. For the second packet, it is high during the FF.
HSDIx_EN can be deasserted to hold off reads from the HSDI. If HSDIx_EN is deasserted while data is still
in the FIFO, ceLynx holds the current byte of data on the data bus until the HSDIx_EN signal is reasserted.
In the example in Figure 316, the HSDIx_EN signal is deasserted in the middle of the transmission of the
third byte of data, 1E. This byte is driven on the bus until the HSDIx_EN signal is sampled asserted on a
rising clock edge.
HSDIx_CLK
HSDIx_SYNC
HSDIx_RW
HSDIx_AV
HSDIx_EN
HSDIx_A[2:0]
HSDIx_D[7:0]
X
45
XX
00
A9
1E
12
67
AA
FF
47
3F
76
56
XX
Figure 317. HSDI Read, Byte Wide Data Bus, Sync Mode C
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TSB42AA4PDTG4 功能描述:1394 接口集成電路 Link Layer Cntrlr 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
TSB42AA4PDTR 制造商:Texas Instruments 功能描述:
TSB42AA4PGE 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:IEEE 1394 A CONSUMER ELECTRONICS LINK LAYER CONTROLLER
TSB42AA4PGER 制造商:Rochester Electronics LLC 功能描述:- Bulk
TSB42AA9 制造商:TI 制造商全稱(chēng):Texas Instruments 功能描述:STORAGELYNX 1394 LINK-LAYER CONTROLLER FOR ATA/ATAPI STORAGE PRODUCTS