TSB41BA3AIPFP datasheet(2/66 Pages) TI

Teilenummer	TSB41BA3AIPFP

Bauteilbeschribung	IEEE 1394b THREE-PORT CABLE TRANSCEIVER/ARBITER

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TSB41BA3A

IEEE 1394b THREEPORT CABLE TRANSCEIVER/ARBITER

SLLS618B − JUNE 2004 − REVISED AUGUST 2004

2

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

description/ordering information

The TSB41BA3A provides the digital and analog transceiver functions needed to implement a three-port node

in a cable-based IEEE 1394 network. Each cable port incorporates two differential line transceivers. The

transceivers include circuitry to monitor the line conditions as needed for determining connection status, for

initialization and arbitration, and for packet reception and transmission. The TSB41BA3A is designed to

interface with a link-layer controller (LLC), such as the TSB82AA2, TSB12LV21, TSB12LV26, TSB12LV32,

TSB42AA4, TSB42AB4, TSB12LV01B, or TSB12LV01C. It may also be connected cable port to cable port to

an integrated 1394 Link + PHY layer such as the TSB43AB2.

The TSB41BA3A is powered by a single 3.3-V supply. The core voltage supply is supplied by an internal voltage

regulator to the PLLVDD-CORE and DVDD-CORE terminals. To protect the phase-locked loop (PLL) from

noise, the PLLVDD-CORE terminals must be separately decoupled from the DVDD-CORE terminals. The

PLLVDD-CORE terminals are decoupled with 1-

µF and smaller decoupling capacitors and the DVDD-CORE

terminals are separately decoupled with a 1-

µF and smaller decoupling capacitors. The separation between

DVDD-CORE and PLLVDD-CORE must be implemented by separate power supply rails or planes.

The TSB41BA3A may be powered by dual supplies, a 3.3-V supply for I/O and a core voltage supply. The core

voltage supply is supplied to the PLLVDD-CORE and DVDD-CORE terminals to the requirements in the

recommended operating conditions section of this data sheet. The PLLVDD-CORE terminals must be

separated from the DVDD-CORE terminals, the PLLVDD-CORE terminals are decoupled with 1-

µF and smaller

decoupling capacitors and the DVDD-CORE terminals separately decoupled with 1-

µF and smaller decoupling

capacitors. The separation between DVDD-CORE and PLLVDD-CORE may be implemented by separate

power supply rails, or by a single power supply rail, where the DVDD-CORE and PLLVDD-CORE are separated

by a filter network to keep noise from the PLLVDD-CORE supply.

The TSB41BA3A requires an external 49.152-MHz crystal to generate a reference clock. The external clock

drives an internal phase-locked loop (PLL), which generates the required reference signal. This reference signal

provides the clock signals that control transmission of the outbound encoded information. A 49.152-MHz clock

signal is supplied by the PHY to the associated LLC for synchronization of the two devices and is used for

resynchronization of the received data when operating the PHY-link interface in compliance with the IEEE

1394a-2000 standard. A 98.304-MHz clock signal is supplied by the PHY to the associated LLC for

synchronization of the two devices when operating the PHY-link interface in compliance with the IEEE

1394b-2002 standard. The power down (PD) function, when enabled by asserting the PD terminal high, stops

operation of the PLL.

Data bits to be transmitted through the cable ports are received from the LLC on 2, 4, or 8 parallel paths

(depending on the requested transmission speed and PHY-link interface mode of operation). They are latched

internally, combined serially, encoded, and transmitted at 98.304, 122.78, 196.608, 245.76, 393.216, or

491.52 Mbits/s (referred to as S100, S100B, S200, S200B, S400, or S400B speed, respectively) as the

outbound information stream.

ORDERING INFORMATION†

TA

PACKAGE

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

0

°C to 70°C

HTQFP - PFP

TSB41BA3APFP

−40

°C to 85°C

HTQFP - PFP

TSB41BA3AIPFP

TSB41BA3I

−40

°C to 85°C

Micro Star

 BGA CSP - GGM

TSB41BA3AIGGM

TSB41BA3I

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

Micro Star is a trademark of Texas Instruments Incorporated.

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