- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385949 > TSB21LV03BI (Texas Instruments, Inc.) IEEE 1394-1995 Triple-Cable Transceiver/Arbiter(IEEE1394-1995 三電纜收發(fā)器/判優(yōu)器) PDF資料下載
參數(shù)資料
| 型號： | 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： | 電機及電子學工程師聯(lián)合會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） |
| 文件頁數(shù)： | 3/25頁 |
| 文件大?。?/td> | 351K |
| 代理商： | TSB21LV03BI |
TSB21LV03BI
IEEE 1394-1995 TRIPLE-CABLE TRANSCEIVER/ARBITER
SGLS108 – FEBRUARY 1999
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
Four package terminals are used as inputs to set four configuration status bits in the self-identification (Self-ID)
packet. These terminals are hardwired high or low as a function of the equipment design. PC0 – PC2 are the
three terminals that indicate either the need for power from the cable or the ability to supply power to the cable.
The fourth terminal, C/LKON, indicates whether a node is a contender for bus manager. When the C/LKON
terminal is asserted, it means the node can be a contender for bus manager. When the terminal is not asserted,
it means that the node is not a contender. The C bit corresponds to bit 20 in the Self-ID packet, PC0 corresponds
to bit 21, PC1 corresponds to bit 22, and PC2 corresponds to bit 23 (see Table 4–29 of the IEEE 1394–1995
standard for additional details).
A power-down terminal, PD, is provided to allow a power-down mode where most of the TSB21LV03B circuits
are powered down to conserve energy in battery-powered applications. A cable status terminal, CNA, provides
a high output when all twisted-pair cable ports are disconnected. This output is not debounced. The CNA output
can be used to determine when to power the TSB21LV03B down or up. In the power-down mode all circuitry
is disabled except the CNA circuitry. It should be noted that when the device is powered-down it does not act
in a repeater mode. When the TSB21LV03B is powered down using the PD terminal, the twisted-pair transmitter
and receiver circuitry has been designed to present a high impedance to the cable to prevent loading the TPBias
terminal voltage on the other end of the cable.
If the TSB21LV03B is being used with one or more of the ports not being brought out to a connector, the TPB
terminals must be terminated for reliable operation. For each unused port, the TPB+ and TPB– terminals must
be connected to GND. This is done in the normal termination network. When a port does not have a cable
connected, the normal termination network pulls TPB+ and TPB– to ground through a 5-k
resistor, thus
disabling the port.
NOTE:
All gap counts on all nodes of a 1394 bus must be identical. This may only be accomplished by using
phy configuration packets (see section 4.3.4.3 of IEEE 1394-1995 Standard) or by using two bus
resets, which resets the gap counts to the maximum level (3Fh).
The link power status (LPS) terminal works with the C/LKON terminal to manage the LLC power usage of the
node. The LPS terminal indicates that the LLC of the node is powered down and powers down the phy-LLC
interface to save power. If the phy then receives a link-on packet, the C/LKON terminal is activated to output
a 6.114 MHz signal, which can be used by the LLC to power itself up. Once the LLC is powered up, the LPS
signal communicates this to the TSB21LV03B, the C/LKON signal is turned off, and the phy-link interface is
enabled.
Two of the package terminals are used to set up various test conditions used in manufacturing. These terminals,
TESTM1 and TESTM2, should be connected to V
DD
for normal operation.
The TSB21LV03BI is characterized for operation over the full industrial temperature range of –40 C to 85 C.
相關PDF資料 |
PDF描述 |
|---|---|
| TSB42AA4I | IEEE 1394 A CONSUMER ELECTRONICS LINK LAYER CONTROLLER |
| TSB42AA4PDT | IEEE 1394 A CONSUMER ELECTRONICS LINK LAYER CONTROLLER |
| TSB42AA4PGE | IEEE 1394 A CONSUMER ELECTRONICS LINK LAYER CONTROLLER |
| TSB42AA9I | STORAGELYNX 1394 LINK-LAYER CONTROLLER FOR ATA/ATAPI STORAGE PRODUCTS |
| TSB42AA9IPZT | STORAGELYNX 1394 LINK-LAYER CONTROLLER FOR ATA/ATAPI STORAGE PRODUCTS |
相關代理商/技術參數(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 |
| TSB21LV03CHV | 制造商:TI 制造商全稱:Texas Instruments 功能描述:IEEE 1394-1995 TRIPLE-CABLE TRANSCEIVER/ARBITER |
| TSB21LV03CMHV | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TSB21LV03CMHVB | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TSB21LV03CPM | 制造商:TI 制造商全稱:Texas Instruments 功能描述:IEEE 1394-1995 TRIPLE-CABLE TRANSCEIVER/ARBITER |
發(fā)布緊急采購，3分鐘左右您將得到回復。