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| 型號(hào)： | 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)： | 19/57頁 |
| 文件大?。?/td> | 810K |
| 代理商： | TSB81BA3I |
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SLLS559B DECEMBER 2002 REVISED OCTOBER 2003
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
Table 4. Page 0 (Port Status) Register Field Descriptions (Continued)
FIELD
SIZE
TYPE
DESCRIPTION
Max_port_speed
3
Rd/Wr
Max_port_speed
The maximum speed at which a port is allowed to operate in beta mode. The encoding is:
000 = S100
001 = S200
010 = S400
011 = S800
100 = S1600
101 = S3200
110 = reserved
111 = reserved
An attempt to write to the register with a value greater than the hardware capability of the port results
in the maximum value that the port is capable of being stored in the register. The port uses this
register only when a new connection is established in the beta mode. The power reset value is the
maximum speed capable of the port. Software may modify this value to force a port to train at a lower
than maximum, but no lower than minimum speed.
LPP
(Local_plug_present)
1
Rd
This flag is set permanently to 1.
Cable_speed
3
Rd
This variable is set to the maximum speed that the port is capable of. The encoding is the same as
for Max_port_speed.
Connection_unreliable
1
Rd/Wr
If this bit is set to 1, then a beta mode speed negotiation has failed or synchronization has failed. A
write of 1 to this field resets the value to 0.
Beta_mode
1
Rd
Operating in beta mode. If this bit is 1, the port is operating in beta mode; it is equal to 0 otherwise
(that is, when operating in 1394a2000 mode, or when disconnected). If Con is 1, RxOK is 1, and
Beta_mode is 0, then the port is active and operating in the 1394a2000 mode.
Port_error
8
Rd/Wr
Incremented whenever the port receives an invalid codeword, unless the value is already 255.
Cleared when read (including being read by means of a remote access packet). Intended for use
by a single bus-wide diagnostic program.
Loop_disable
1
Rd
This bit is set to 1 if the port has been placed in the loop disable state as part of the loop free build
process (the PHYs at either end of the connection are active, but if the connection itself were
activated, then a loop would exist). Cleared on bus reset and on disconnection.
In_standby
1
Rd
This bit is set to 1 if the port is in standby power-management state.
Hard_disable
1
Rd/Wr
No effect unless the port is disabled. If this bit is set to 1, the port does not maintain connectivity status
on an ac connection when disabled. The values of the Con and RxOK bits are forced to 0. This flag
can be used to force renegotiation of the speed of a connection. It can also be used to place the
device into a lower power state since when hard disabled, a port no longer
tones
to maintain 1394b
ac-connectivity status.
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相關(guān)代理商/技術(shù)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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