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| 型号： | TSB41BA3AIGGM |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | IEEE 1394b THREE-PORT CABLE TRANSCEIVER/ARBITER |
| 中文描述： | 的IEEE 1394b三端口电缆收发器/仲裁者 |
| 文件页数： | 52/66页 |
| 文件大小： | 895K |
| 代理商： | TSB41BA3AIGGM |
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SLLS618B JUNE 2004 REVISED AUGUST 2004
52
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PRINCIPLES OF OPERATION (1394B INTERFACE)
LLC service request (continued)
Table 25. 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 26 shows the encoding for the request type.
Table 26. 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 27.
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| TSB41BA3AIPFP | 功能描述:缓冲器和线路驱动器 Three-Port Cable Xcvr/Arbiter RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| TSB41BA3APFP | 功能描述:缓冲器和线路驱动器 Three-Port Cable Xcvr/Arbiter RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| TSB41BA3APFPG4 | 功能描述:1394 接口集成电路 Three-Port Cable Xcvr/Arbiter RoHS:否 制造商:Texas Instruments 类型:Link Layer Controller 工作电源电压: 封装 / 箱体:LQFP 封装:Tray |
| TSB41BA3ATPFPEP | 功能描述:缓冲器和线路驱动器 Mil Enh 3-Port Cable Xcvr/Arbiter RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| TSB41BA3B | 制造商:TI 制造商全称:Texas Instruments 功能描述:IEEE 1394b THREE-PORT CABLE TRANSCEIVER/ARBITER |
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