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| 型號： | TSB81BA3I |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | IEEE 1394b THREE-PORT CABLE TRANSCEIVER/ARBITER |
| 中文描述： | 的IEEE 1394b三端口電纜收發(fā)器/仲裁者 |
| 文件頁數(shù)： | 44/57頁 |
| 文件大小： | 810K |
| 代理商： | TSB81BA3I |
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SLLS559B DECEMBER 2002 REVISED OCTOBER 2003
44
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION (1394B INTERFACE)
LLC service request (continued)
Table 24. Request Stream Bit Length
REQUEST TYPE
NUMBER OF BITS
Bus request
11
Read register request
10
Write register request
18
Link notification request
6
PHY-link interface reset request
6
Regardless of the type of request, a start bit of 1 is required at the beginning of the stream, and a stop bit of 0
is required at the end of the stream. The second through fifth bits of the request stream indicate the type of the
request. In the descriptions below, bit 0 is the most significant and is transmitted first in the request bit stream.
The LREQ terminal is normally low.
Table 25 show the encoding for the request type.
Table 25. Request Type Encoding
LR1LR4
NAME
DESCRIPTION
0000
Reserved
Reserved
0001
Immed_Req
Immediate request. Upon detection of idle, the PHY arbitrates for the bus.
0010
Next_Even
Next even request. The PHY arbitrates for the bus to send an asynchronous packet in the even fairness
interval phase.
0011
Next_Odd
Next odd request. The PHY arbitrates for the bus to send an asynchronous packet in the odd fairness
interval phase.
0100
Current
Current request. The PHY arbitrates for the bus to send an asynchronous packet in the current fairness
interval.
0101
Reserved
Reserved
0110
Isoch_Req_Even
Isochronous even request. The PHY arbitrates for the bus to send an isochronous packet in the even
isochronous period.
0111
Isoch_Req_Odd
Isochronous odd request. The PHY arbitrates for the bus to send an isochronous packet in the odd
isochronous period.
1000
Cyc_Start_Req
Cycle start request. The PHY arbitrates for the bus to send a cycle start packet.
1001
Reserved
Reserved
1010
Reg_Read
Register read request. The PHY returns the specified register contents through a status transfer.
1011
Reg_Write
Register write request. Write to the specified register in the PHY.
1100
Isoch_Phase_Even
Isochronous phase even notification. The link reports to the PHY that:
1) A cycle start packet has been received
2) The link has set the isochronous phase to even.
1101
Isoch_Phase_Odd
Isochronous phase odd notification. The link reports to the PHY that:
1) A cycle start packet has been received
2) The link has set the isochronous phase to odd.
1110
Cycle_Start_Due
Cycle start due notification. The link reports to the PHY that a cycle start packet is due for reception.
1111
Reserved
Reserved
For a bus request, the length of the LREQ bit stream is 11 bits as shown in Table 26.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TSB81BA3IPFP | 功能描述:射頻收發(fā)器 s800 3-Port Cable Xcvr/Arbiter RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
| TSB81BA3IPFPEP | 功能描述:射頻收發(fā)器 Mil Enh 3-Port Cable Xcvr/Arbiter RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
| TSB81BA3PFP | 功能描述:射頻收發(fā)器 s800 3-Port Cable Xcvr/Arbiter RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
| TSB81BA3PFPG4 | 功能描述:射頻收發(fā)器 s800 3-Port Cable Xcvr/Arbiter RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
| TSB82AA2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:1394b OHCI-LYNX CONTROLLER |
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