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參數資料
型號: TSB12LV32-EP
英文描述: IC APEX 20KE FPGA 100K 324-FBGA
中文描述: 軍事增強塑料電機及電子學工程師聯合會1394-1995和P1394a兼容通用鏈路層控制器
文件頁數: 71/106頁
文件大小: 605K
代理商: TSB12LV32-EP
5
15
DMCLK
DMRW
DMD[0:15]
DMREADY
DMPRE
DMDONE
Figure 5
22. Asynchronous Block Transmit With Automatic Header Insertion at 400 Mbps
5.2.6
Asynchronous Packet Transmit Without Automatic Header Insertion
Upon receiving a high on DMREADY, the following sequence of operations are performed:
Step 1:
DMDONE will be asserted low (deactivated) at the next DMCLK cycle.
Step 2:
DMPRE will pulse for one DMCLK cycle before the header quadlets are sent.
Step 3:
The data mover will fetch the headers by asserting DMRW high.
Step 4:
The data mover will then load the headers into the header0
header3 registers and request
the data to be transmitted out on the 1394 bus by the link core.
Step 5:
The link will fetch the headers.
Step 6:
DMPRE will pulse for one DMCLK cycle before the first data quadlet is sent.
Step 7:
The data mover will then begin to fetch the data payload by asserting DMRW high.
Step 8:
When the link core has fetched the last data quadlet, the data mover waits until the
destination node returns an
ack_complete
immediate response. If an
ack_complete
is not
received, the data mover will assert DMERROR high and become disabled.
Figure 5
23 and Figure 5
24 show the timing diagram for this mode for the quadlet transmit and the block
transmit cases, respectively. For simplicity, a data block size of three quadlets was selected in Figure 5
24.
DMCLK
DMRW
DMD[0:15]
DMREADY
DMPRE
DMDONE
Header Quadlets
Data Quadlet
Figure 5
23. Asynchronous Quadlet Transmit Without Automatic Header Insertion at 400 Mbps
DMCLK
DMRW
DMD[0:15]
DMREADY
DMPRE
DMDONE
Header Quadlets
Data Quadlets
Figure 5
24. Asynchronous Block Transmit Without Automatic Header Insertion at 400 Mbps
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相關代理商/技術參數
參數描述
TSB12LV32I 制造商:TI 制造商全稱:Texas Instruments 功能描述:IEEE 1394-1995 and P1394a Compliant General-Purpose Link-Layer Controller
TSB12LV32IPZ 功能描述:1394 接口集成電路 General-Purpose Link Layer Cntrlr RoHS:否 制造商:Texas Instruments 類型:Link Layer Controller 工作電源電壓: 封裝 / 箱體:LQFP 封裝:Tray
TSB12LV32IPZEP 制造商:Texas Instruments 功能描述:1394 I-TEMP 1394 GENERAL-PURPOSE LINK LAYER CONTROLLER (GP2L - Rail/Tube
TSB12LV32IPZG4 功能描述:1394 接口集成電路 General Purpose Link Layer Cntrlr RoHS:否 制造商:Texas Instruments 類型:Link Layer Controller 工作電源電壓: 封裝 / 箱體:LQFP 封裝:Tray
TSB12LV32PZ 功能描述:1394 接口集成電路 General-Purpose Link Layer Cntrlr RoHS:否 制造商:Texas Instruments 類型:Link Layer Controller 工作電源電壓: 封裝 / 箱體:LQFP 封裝:Tray
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