1.2 Features

The TSB43AB21A device supports the following features:

• Fully compliant with 1394 Open Host Controller Interface Specification (Release 1.1)

• Fully compliant with provisions of IEEE Std 1394-1995 for a high-performance serial bus† and IEEE Std

1394a-2000

• Fully interoperable with FireWire and i.LINK implementations of IEEE Std 1394

• Compliant with Intel Mobile Power Guideline 2000

• Full IEEE Std 1394a-2000 support includes: connection debounce, arbitrated short reset, multispeed

concatenation, arbitration acceleration, fly-by concatenation, and port disable/suspend/resume

• Power-down features to conserve energy in battery-powered applications include: automatic device power

down during suspend, PCI power management for link-layer, and inactive ports powered down

• Ultralow-power sleep mode

• One IEEE Std 1394a-2000 fully compliant cable port at 100M bits/s, 200M bits/s, or 400M bits/s

• Cable port monitors line conditions for active connection to remote node

• Cable power presence monitoring

• 1.8-V core logic with universal PCI interfaces compatible with 3.3-V and 5-V PCI signaling environments

• Physical write posting of up to three outstanding transactions

• PCI burst transfers and deep FIFOs to tolerate large host latency

• PCI_CLKRUN protocol

• External cycle timer control for customized synchronization

• Extended resume signaling for compatibility with legacy DV components

• PHY-link logic performs system initialization and arbitration functions

• PHY-link encode and decode functions included for data-strobe bit level encoding

• PHY-link incoming data resynchronized to local clock

• Low-cost 24.576-MHz crystal provides transmit and receive data at 100M bits/s, 200M bits/s, or 400M bits/s

• Node power class information signaling for system power management

• Serial ROM interface supports 2-wire serial EEPROM devices

• Two general-purpose I/Os

• Register bits give software control of contender bit, power class bits, link active control bit, and IEEE Std

1394a-2000 features

• Fabricated in advanced low-power CMOS process

• PCI and CardBus register support

• Isochronous receive dual-buffer mode

• Out-of-order pipelining for asynchronous transmit requests

• Register access fail interrupt when the PHY SCLK is not active

• PCI power-management D0, D1, D2, and D3 power states

• Initial bandwidth available and initial channels available registers

• PME support per 1394 Open Host Controller Interface Specification