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參數(shù)資料
| 型號： | TSB17BA1PW |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | IEEE STD 1394b SINGLE-PORT CABLE TRANSCEIVER |
| 中文描述： | IEEE標準的1394b單端口電纜收發(fā)器 |
| 文件頁數(shù)： | 13/15頁 |
| 文件大?。?/td> | 218K |
| 代理商： | TSB17BA1PW |
SLLS568C JANUARY 2004 REVISED MARCH 2004
13
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
1
2
3
6
7
8
4
5
9
10
11
14
15
16
12
13
E_OUT
E_INN
E_INP
VSS33
BETA_OUTP
BETA_OUTN
VDD33
BETA_INP
BETA_INN
PD_SE
TEST0
TEST1
VREG_PD
VONTROL
R1
R0
UTP5_INP
UTP5_INN
VDD18
UTP5_OUTP
UTP5_OUTN
VSS18
TEST3
TEST2
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
R55
49.9
R56
49.9
C25
0.001
μ
F
C28
0.1
μ
F
C29
0.1
μ
F
1.3 V
T1/T1
HB726
R64
U3
TSB17BA1
UTP_TPA2+
UTP_TPA2
UTP_TPB2+
UTP_TPB2
Figure 5. Workaround Circuit
This circuit, when used with parts received from Texas Instruments after 2003, should allow the device to reject
in-band noise and crosstalk of at least 20 mVp-p. Alternate connection of the transformer center tap (pin 7) may
provide noise immunity advantages.
The dc offset provided by the workaround circuit reduces the sensitivity of the device to both desired and
undesired signals. This offset method proved successful with a sampling of TSB17BA1 devices (under nominal
conditions) connected by 100m of CAT 5e cable in three segments with jack-to-jack adapter boards.
In some cases it may be possible to cycle system power to all nodes simultaneously after all UTP cables are
connected (that is, terminated) and have ports connect normally. In this configuration the noise levels from
issues 2 and 3 may be reduced by the cable termination. This noise reduction combined with the presence of
a real signal may have enough signal-to-noise difference to allow the system to connect and operate. This
solution may not work for issues 1 and 3 with large amplitude noise environments.
UTP output level issue
problem description
The TSB17BA1 UTP5_OUT output drive level is designed and tested to the same limits that the IEEE Std
1394b-2002 specification table 122 provides for the transmit system. Losses in the transformer, PCB,
connector, etc., of a product using the TSB17BA1 may result in degraded UTP transmit levels. These reduced
output levels may not meet the 1394b specification but may still operate satisfactorily.
workaround
None
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TSB17BA1PWG4 | 功能描述:1394 接口集成電路 UTP5 Equalizer for 1394b PHYs RoHS:否 制造商:Texas Instruments 類型:Link Layer Controller 工作電源電壓: 封裝 / 箱體:LQFP 封裝:Tray |
| TSB18 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EURO TERMINAL BLOCKS |
| TSB1857CT A3 | 功能描述:兩極晶體管 - BJT PNP Transistor Low Vce sat RoHS:否 制造商:STMicroelectronics 配置: 晶體管極性:PNP 集電極—基極電壓 VCBO: 集電極—發(fā)射極最大電壓 VCEO:- 40 V 發(fā)射極 - 基極電壓 VEBO:- 6 V 集電極—射極飽和電壓: 最大直流電集電極電流: 增益帶寬產品fT: 直流集電極/Base Gain hfe Min:100 A 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PowerFLAT 2 x 2 |
| TSB19 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EURO TERMINAL BLOCKS |
| TSB2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:EURO TERMINAL BLOCKS |
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