TSB17BA1 Datasheet, PDF (1/15 Pages) Texas Instruments – IEEE STD 1394b SINGLE-PORT CABLE TRANSCEIVER

TSB17BA1
IEEE STD 1394b SINGLEĆPORT CABLE TRANSCEIVER
SLLS568C − JANUARY 2004 − REVISED MARCH 2004
D Fully Supports Provisions of IEEE Std
1394b-2002 at S100B Signaling Rates
D Provides One Transceiver to Drive IEEE Std
1394b Signaling Across Unshielded
Twisted Pair Category 5 (UTP5 or CAT5)
Cable or Better at 100 Megabits per Second
(Mbits/s)
D Power-Down Features to Conserve Energy
in Battery Powered Applications
D Single 3.3-V Supply Operation or Optional
Dual 3.3-V/1.8-V Supply Operation
D Low-Cost High-Performance 24-Terminal
TSSOP Package
D Low-Power Modes to Put Device Into Low
Power States When Data Is Not Being
Driven
description
The TSB17BA1 is a single-port 100-Mbps transceiver used in transporting IEEE Std 1394b (1394b) or other
coded data across CAT5 or better cabling. It is attached to a 1394b-capable port on a 1394b physical layer (PHY)
to enable 1394b 100-Mbps signals to be transmitted and received across up to 100 meters of unshielded
twisted-pair category 5 (UTP5) cable. Equalization is applied to the signal received from the UTP5 cable to boost
signal-to-noise ratio (SNR) to allow sensing of the data. A 1394b PHY device capable of transmitting at only
100 Mbits/s in 1394b-only mode is required for correct functionality. This PHY must be connected to the
TSB17BA1 at one of the twisted-pair (TP) ports, with the 110-Ω 1394b transmission line properly terminated.
The TSB17BA1 must then be connected to a 100-Ω transmission line properly terminated and connected to an
isolating transformer. This transformer is then connected to an RJ45 connector. All of the parameters on the
UTP5 side of the TSB17BA1 are set the same as 100baseT Ethernet. This allows the mechanical and magnetic
infrastructure, which is used to design a 100baseT connection, to be used when designing a 100-Mbits/s UTP5
1394b connection. This device does not implement the autocrossover functionality described in chapter 12 of
IEEE Std 1394b-2002. This means the required crossover of TPA to TPB and TPB to TPA must be done in the
cable or connector or PWB; in other words, a mechanical crossover must be implemented (see the Application
Information section).
terminal assignments
E_OUT
E_INN
E_INP
VSS33
BETA_OUTP
BETA_OUTN
VDD33
BETA_INP
BETA_INN
PD_SE
TEST0
TEST1
PW PACKAGE
(TOP VIEW)
1
24
2
23
3
22
4
21
5
20
6
19
7
18
8
17
9
16
10
15
11
14
12
13
VREG_PD
VCONTROL
R1
R0
UTP5_INP
UTP5_INN
VDDCORE
UTP5_OUTP
UTP5_OUTN
VSSCORE
TEST3
TEST2
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Implements technology covered by one or more patents of Apple Computer, Inc. and SGS Thompson, Limited.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright  2004, Texas Instruments Incorporated
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