參數(shù)資料
型號(hào)： TSB21LV03BI
廠商： Texas Instruments, Inc.
英文描述： IEEE 1394-1995 Triple-Cable Transceiver/Arbiter(IEEE1394-1995 三電纜收發(fā)器/判優(yōu)器)
中文描述： 電機(jī)及電子學(xué)工程師聯(lián)合會(huì)1394-1995三線收發(fā)器/仲裁器（IEEE1394連接- 1995三電纜收發(fā)器/判優(yōu)器）
文件頁(yè)數(shù)： 17/25頁(yè)
文件大?。?/td> 351K
代理商： TSB21LV03BI
TSB21LV03BI
IEEE 1394-1995 TRIPLE-CABLE TRANSCEIVER/ARBITER
SGLS108 – FEBRUARY 1999
17
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION
Table 5. LLC Bus-Request or Register-Access-Request Bit Length
REQUEST TYPE
NUMBER OF BITS
Bus request
7
Read register request
9
Write register request
17
For a Bus Request the length of the LREQ data stream is 7 bits as shown in Table 6.
Table 6. LLC Bus Request
BIT(S)
NAME
DESCRIPTION
0
Start bit
Indicates the beginning of the transfer (always 1).
1–3
Request type
Indicates the type of bus request (see Table 9 for the encoding of this field).
4–5
Request speed
Should be 00 for TSB21LV03B 100-Mbit/s speed and 01 for 200-Mbit/s speed.
6
Stop bit
Indicates the end of the transfer (always 0).
For a Read Register Request the length of the LREQ data stream is 9 bits as shown in Table 7.
Table 7. LLC Read Register Access
BIT(S)
NAME
DESCRIPTION
0
Start bit
Indicates the beginning of the transfer (always 1).
1–3
Request type
Always a 100 indicating that this is a read register request.
4–7
Address
Identifies the address of the phy register to be read.
8
Stop bit
Indicates the end of the transfer (always 0).
For a Write Register Request the Length of the LREQ data stream is 17 bits as shown in Table 8.
Table 8. LLC Write Register Access
BIT(S)
NAME
DESCRIPTION
0
Start bit
Indicates the beginning of the transfer (always 1).
1–3
Request type
Always a 101 indicating that this is a write register request.
4–7
Address
Identifies the address of the phy register to be written to.
8–15
Data
Gives the data that is to be written to the specified register address.
16
Stop bit
Indicates the end of the transfer (always 0).
The 3-bit Request Type field has the values shown in Table 9.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TSB21LV03C 制造商:TI 制造商全稱:Texas Instruments 功能描述:IEEE 1394-1995 TRIPLE-CABLE TRANSCEIVER/ARBITER
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